Collapse apex-pdp maven model submodules

This review collapses all the code in six podel submodules into a single
model module. There are no code changes, just files moved around.

This change reduces the complexity of the code structure and speeds up
the build.

Issue-ID: POLICY-1820
Change-Id: Ifb644e8ec85ae6d0987378f4616fbc8a8858a9a8
Signed-off-by: liamfallon <liam.fallon@est.tech>

28 files changed, 0 insertions, 6608 deletions

diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxLogic.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxLogic.java
deleted file mode 100644
index 0564d5854..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxLogic.java
+++ /dev/null
@@ -1,355 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019-2020,2022 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import java.util.List;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * This class holds Logic for executing a task or task selection on an Apex policy state. The flavour of the logic
- * describes the type of logic being used and it may be a language identifier such as "Javascript" or "Jython". The
- * logic itself is held as a string. The {@link AxLogic} instance is used by the Apex engine to start an executor with
- * the required flavour. Once the executor is started, the Apex engine passes the logic to the executor and the executor
- * executes it. In the Apex engine, executors are deployed as plugins. Apex also provides the executor with run-time
- * context, which makes context such as input fields, output fields, and context albums available to the task at
- * runtime.
- *
- * <p>Validation checks that the logic key is valid, that the logic flavour is defined and is valid when checked against
- * the {@code LOGIC_FLAVOUR_REGEXP} regular expression, and that the specified logic string is not null or blank.
- */
-public class AxLogic extends AxConcept {
-    private static final long serialVersionUID = -4260562004005697328L;
-
-    private static final String WHITESPACE_REGEXP = "\\s+$";
-
-    private static final String LOGIC_FLAVOUR_TOKEN = "logicFlavour";
-    private static final String KEY_NULL_MESSAGE = "key may not be null";
-    private static final String LOGIC_FLAVOUR_NULL_MESSAGE = "logicFlavour may not be null";
-    private static final String LOGIC_NULL_MESSAGE = "logic may not be null";
-
-    /** Regular expression that specifies the allowed characters in logic flavour tokens. */
-    public static final String LOGIC_FLAVOUR_REGEXP = "[A-Za-z0-9\\-_]+";
-
-    /** When logic flavour is undefined, it has this value. */
-    public static final String LOGIC_FLAVOUR_UNDEFINED = "UNDEFINED";
-
-    /** The maximum permissible size of a logic definition. */
-    public static final int MAX_LOGIC_SIZE = 32672; // The maximum size supported by Apache Derby
-
-    private AxReferenceKey key;
-    private String logicFlavour;
-    private String logic;
-
-    /**
-     * The Default Constructor creates a logic instance with a null key, undefined logic flavour and a null logic
-     * string.
-     */
-    public AxLogic() {
-        this(new AxReferenceKey());
-        logicFlavour = LOGIC_FLAVOUR_UNDEFINED;
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxLogic(final AxLogic copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The Key Constructor creates a logic instance with the given reference key, undefined logic flavour and a null
-     * logic string.
-     *
-     * @param key the reference key of the logic
-     */
-    public AxLogic(final AxReferenceKey key) {
-        this(key, LOGIC_FLAVOUR_UNDEFINED, "");
-    }
-
-    /**
-     * This Constructor creates a logic instance with a reference key constructed from the parents key and the logic
-     * local name and all of its fields defined.
-     *
-     * @param parentKey the reference key of the parent of this logic
-     * @param logicName the logic name, held as the local name of the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logic the actual logic as a string
-     */
-    public AxLogic(final AxReferenceKey parentKey, final String logicName, final String logicFlavour,
-                    final String logic) {
-        this(new AxReferenceKey(parentKey, logicName), logicFlavour, logic);
-    }
-
-    /**
-     * This Constructor creates a logic instance with the given reference key and all of its fields defined.
-     *
-     * @param key the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logic the actual logic as a string
-     */
-    public AxLogic(final AxReferenceKey key, final String logicFlavour, final String logic) {
-        super();
-        Assertions.argumentNotNull(key, KEY_NULL_MESSAGE);
-        Assertions.argumentNotNull(logicFlavour, LOGIC_FLAVOUR_NULL_MESSAGE);
-        Assertions.argumentNotNull(logic, LOGIC_NULL_MESSAGE);
-
-        this.key = key;
-        this.logicFlavour = Assertions.validateStringParameter(LOGIC_FLAVOUR_TOKEN, logicFlavour, LOGIC_FLAVOUR_REGEXP);
-        this.logic = logic.replaceAll(WHITESPACE_REGEXP, "");
-    }
-
-    /**
-     * This Constructor creates a logic instance with the given reference key and logic flavour, the logic is provided
-     * by the given logic reader instance.
-     *
-     * @param key the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logicReader the logic reader to use to read the logic for this logic instance
-     */
-    public AxLogic(final AxReferenceKey key, final String logicFlavour, final AxLogicReader logicReader) {
-        super();
-        Assertions.argumentNotNull(key, KEY_NULL_MESSAGE);
-        Assertions.argumentNotNull(logicFlavour, LOGIC_FLAVOUR_NULL_MESSAGE);
-        Assertions.argumentNotNull(logicReader, "logicReader may not be null");
-
-        this.key = key;
-        this.logicFlavour = Assertions.validateStringParameter(LOGIC_FLAVOUR_TOKEN, logicFlavour, LOGIC_FLAVOUR_REGEXP);
-        logic = logicReader.readLogic(this);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxReferenceKey getKey() {
-        return key;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        return key.getKeys();
-    }
-
-    /**
-     * Sets the key.
-     *
-     * @param key the key
-     */
-    public void setKey(final AxReferenceKey key) {
-        Assertions.argumentNotNull(key, KEY_NULL_MESSAGE);
-        this.key = key;
-    }
-
-    /**
-     * Gets the logic flavour.
-     *
-     * @return the logic flavour
-     */
-    public String getLogicFlavour() {
-        return logicFlavour;
-    }
-
-    /**
-     * Sets the logic flavour.
-     *
-     * @param logicFlavour the logic flavour
-     */
-    public void setLogicFlavour(final String logicFlavour) {
-        this.logicFlavour = Assertions.validateStringParameter(LOGIC_FLAVOUR_TOKEN, logicFlavour, LOGIC_FLAVOUR_REGEXP);
-    }
-
-    /**
-     * Gets the logic.
-     *
-     * @return the logic
-     */
-    public String getLogic() {
-        return logic;
-    }
-
-    /**
-     * Sets the logic.
-     *
-     * @param logic the logic
-     */
-    public void setLogic(final String logic) {
-        Assertions.argumentNotNull(logic, LOGIC_NULL_MESSAGE);
-        this.logic = logic.replaceAll(WHITESPACE_REGEXP, "");
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxValidationResult validate(final AxValidationResult resultIn) {
-        AxValidationResult result = resultIn;
-
-        if (key.equals(AxReferenceKey.getNullKey())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "key is a null key"));
-        }
-
-        result = key.validate(result);
-
-        if (logicFlavour.replaceAll(WHITESPACE_REGEXP, "").length() == 0
-                        || logicFlavour.equals(LOGIC_FLAVOUR_UNDEFINED)) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "logic flavour is not defined"));
-        }
-
-        String flavourValidationString = Assertions.getStringParameterValidationMessage(LOGIC_FLAVOUR_TOKEN,
-                        logicFlavour, LOGIC_FLAVOUR_REGEXP);
-        if (flavourValidationString != null) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "logic flavour invalid-" + flavourValidationString));
-        }
-
-        if (logic.replaceAll(WHITESPACE_REGEXP, "").length() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "no logic specified, logic may not be blank"));
-        }
-
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        if (key != null) {
-            key.clean();
-        }
-        logicFlavour = Assertions.validateStringParameter(LOGIC_FLAVOUR_TOKEN, logicFlavour, LOGIC_FLAVOUR_REGEXP);
-        logic = logic.replaceAll(WHITESPACE_REGEXP, "");
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-        builder.append(this.getClass().getSimpleName());
-        builder.append(":(");
-        builder.append("key=");
-        builder.append(key);
-        builder.append(",logicFlavour=");
-        builder.append(logicFlavour);
-        builder.append(",logic=");
-        builder.append(logic);
-        builder.append(")");
-        return builder.toString();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxConcept copyTo(final AxConcept targetObject) {
-        Assertions.argumentNotNull(targetObject, "target may not be null");
-
-        final Object copyObject = targetObject;
-        Assertions.instanceOf(copyObject, AxLogic.class);
-
-        final AxLogic copy = ((AxLogic) copyObject);
-        copy.setKey(new AxReferenceKey(key));
-        copy.setLogicFlavour(logicFlavour);
-        copy.setLogic(logic);
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + logicFlavour.hashCode();
-        result = prime * result + logic.hashCode();
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public boolean equals(final Object obj) {
-        if (obj == null) {
-            return false;
-        }
-        if (this == obj) {
-            return true;
-        }
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-
-        final AxLogic other = (AxLogic) obj;
-        if (!key.equals(other.key)) {
-            return false;
-        }
-        if (!logicFlavour.equals(other.logicFlavour)) {
-            return false;
-        }
-        return logic.equals(other.logic);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxConcept otherObj) {
-        if (otherObj == null) {
-            return -1;
-        }
-        if (this == otherObj) {
-            return 0;
-        }
-        if (getClass() != otherObj.getClass()) {
-            return this.hashCode() - otherObj.hashCode();
-        }
-
-        final AxLogic other = (AxLogic) otherObj;
-        if (!key.equals(other.key)) {
-            return key.compareTo(other.key);
-        }
-        if (!logicFlavour.equals(other.logicFlavour)) {
-            return logicFlavour.compareTo(other.logicFlavour);
-        }
-        return logic.compareTo(other.logic);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxLogicReader.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxLogicReader.java
deleted file mode 100644
index 7532f9f34..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxLogicReader.java
+++ /dev/null
@@ -1,74 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * 
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-/**
- * This interface is used to provide logic to a {@link AxLogic} instance. Implementations usually
- * store logic on disk in a structure similar to Java package naming conventions. The logic package
- * gives the package path, a directory where a set of logic is defined. Default logic is logic that
- * can be used as dummy logic in tasks or states that are filler tasks or states. The actual logic
- * is returned by the {@code readLogic()} method. The interface is used mainly by unit test classes
- * that generate test logic.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-public interface AxLogicReader {
-
-    /**
-     * Get the logic package path.
-     *
-     * @return the logic package path
-     */
-    String getLogicPackage();
-
-    /**
-     * Set the logic package path.
-     *
-     * @param logicPackage the name of the package that contains the logic for this logic reader
-     * @return the logic reader on which this method was called, used for daisy chaining
-     *         configuration
-     */
-    AxLogicReader setLogicPackage(final String logicPackage);
-
-    /**
-     * Get the default logic name.
-     *
-     * @return the default logic name
-     */
-    String getDefaultLogic();
-
-    /**
-     * Set the default logic name.
-     *
-     * @param defaultLogic the default logic name
-     * @return the logic reader on which this method was called, used for daisy chaining
-     *         configuration
-     */
-    AxLogicReader setDefaultLogic(final String defaultLogic);
-
-    /**
-     * Read the logic for an AxLogic object.
-     *
-     * @param axLogic the AxLogic object
-     * @return the logic as a string
-     */
-    String readLogic(final AxLogic axLogic);
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxPolicies.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxPolicies.java
deleted file mode 100644
index bb30f46cf..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxPolicies.java
+++ /dev/null
@@ -1,360 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019-2020,2022 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.NavigableMap;
-import java.util.Set;
-import java.util.TreeMap;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConceptGetter;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConceptGetterImpl;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * This class is a policy container and holds a map of the policies for an entire Apex model. All Apex models that use
- * policies must have an {@link AxPolicies} field. The {@link AxPolicies} class implements the helper methods of the
- * {@link AxConceptGetter} interface to allow {@link AxPolicy} instances to be retrieved by calling methods directly on
- * this class without referencing the contained map.
- *
- * <p>Validation checks that the container key is not null. An error is issued if no policies are defined in the
- * container. Each policy entry is checked to ensure that its key and value are not null and that the key matches the
- * key in the map value. Each policy entry is then validated individually.
- */
-public class AxPolicies extends AxConcept implements AxConceptGetter<AxPolicy> {
-    private static final long serialVersionUID = 4290442590545820316L;
-
-    private AxArtifactKey key;
-    private Map<AxArtifactKey, AxPolicy> policyMap;
-
-    /**
-     * The Default Constructor creates a {@link AxPolicies} object with a null artifact key and creates an empty event
-     * map.
-     */
-    public AxPolicies() {
-        this(new AxArtifactKey());
-    }
-
-    /**
-     * The Key Constructor creates a {@link AxPolicies} object with the given artifact key and creates an empty event
-     * map.
-     *
-     * @param key the key
-     */
-    public AxPolicies(final AxArtifactKey key) {
-        this(key, new TreeMap<>());
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxPolicies(final AxPolicies copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * This Constructor creates a policy container with all of its fields defined.
-     *
-     * @param key       the policy container key
-     * @param policyMap the policies to be stored in the policy container
-     */
-    public AxPolicies(final AxArtifactKey key, final Map<AxArtifactKey, AxPolicy> policyMap) {
-        super();
-        Assertions.argumentNotNull(key, "key may not be null");
-        Assertions.argumentNotNull(policyMap, "policyMap may not be null");
-
-        this.key = key;
-        this.policyMap = new TreeMap<>();
-        this.policyMap.putAll(policyMap);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxArtifactKey getKey() {
-        return key;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = key.getKeys();
-
-        for (final AxPolicy policy : policyMap.values()) {
-            keyList.addAll(policy.getKeys());
-        }
-
-        return keyList;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void buildReferences() {
-        policyMap.entrySet().stream().forEach(policyEntry -> {
-                policyEntry.getValue().setKey(policyEntry.getKey());
-                policyEntry.getValue().buildReferences();
-            }
-        );
-    }
-
-    /**
-     * Sets the key of the policy container.
-     *
-     * @param key the policy container key
-     */
-    public void setKey(final AxArtifactKey key) {
-        Assertions.argumentNotNull(key, "key may not be null");
-        this.key = key;
-    }
-
-    /**
-     * Gets the policy map containing all policies in the policy container.
-     *
-     * @return the policy map with all the policies in the container
-     */
-    public Map<AxArtifactKey, AxPolicy> getPolicyMap() {
-        return policyMap;
-    }
-
-    /**
-     * Sets the policy map containing all policies in the policy container.
-     *
-     * @param policyMap the policy map with all the policies to be put in the container
-     */
-    public void setPolicyMap(final Map<AxArtifactKey, AxPolicy> policyMap) {
-        Assertions.argumentNotNull(policyMap, "policyMap may not be null");
-        this.policyMap = new TreeMap<>();
-        this.policyMap.putAll(policyMap);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxValidationResult validate(final AxValidationResult resultIn) {
-        AxValidationResult result = resultIn;
-
-        if (key.equals(AxArtifactKey.getNullKey())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                "key is a null key"));
-        }
-
-        result = key.validate(result);
-
-        if (policyMap.size() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                "policyMap may not be empty"));
-        } else {
-            for (final Entry<AxArtifactKey, AxPolicy> policyEntry : policyMap.entrySet()) {
-                final AxArtifactKey entryKey = policyEntry.getKey();
-                if (entryKey.equals(AxArtifactKey.getNullKey())) {
-                    result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                        "key on policy entry " + entryKey + " may not be the null key"));
-                } else if (policyEntry.getValue() == null) {
-                    result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                        "value on policy entry " + entryKey + " may not be null"));
-                } else {
-                    validate(result, policyEntry, entryKey);
-                    result = policyEntry.getValue().validate(result);
-                }
-            }
-        }
-
-        return result;
-    }
-
-    private void validate(final AxValidationResult result, final Entry<AxArtifactKey, AxPolicy> policyEntry,
-                          final AxArtifactKey entryKey) {
-        if (!entryKey.equals(policyEntry.getValue().getKey())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                "key on policy entry key " + entryKey + " does not equal policy value key "
-                    + policyEntry.getValue().getKey()));
-        }
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        key.clean();
-        for (final Entry<AxArtifactKey, AxPolicy> policyEntry : policyMap.entrySet()) {
-            policyEntry.getKey().clean();
-            policyEntry.getValue().clean();
-        }
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-        builder.append(this.getClass().getSimpleName());
-        builder.append(":(");
-        builder.append("key=");
-        builder.append(key);
-        builder.append(",policyMap=");
-        builder.append(policyMap);
-        builder.append(")");
-        return builder.toString();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxConcept copyTo(final AxConcept targetObject) {
-        Assertions.argumentNotNull(targetObject, "target may not be null");
-
-        final Object copyObject = targetObject;
-        Assertions.instanceOf(copyObject, AxPolicies.class);
-
-        final AxPolicies copy = ((AxPolicies) copyObject);
-        copy.setKey(new AxArtifactKey(key));
-
-        final Map<AxArtifactKey, AxPolicy> newPolicyMap = new TreeMap<>();
-        for (final Entry<AxArtifactKey, AxPolicy> policyMapEntry : policyMap.entrySet()) {
-            newPolicyMap.put(new AxArtifactKey(policyMapEntry.getKey()), new AxPolicy(policyMapEntry.getValue()));
-        }
-        copy.setPolicyMap(newPolicyMap);
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + policyMap.hashCode();
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public boolean equals(final Object obj) {
-        if (obj == null) {
-            return false;
-        }
-        if (this == obj) {
-            return true;
-        }
-
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-
-        final AxPolicies other = (AxPolicies) obj;
-        if (!key.equals(other.key)) {
-            return false;
-        }
-        return policyMap.equals(other.policyMap);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxConcept otherObj) {
-        if (otherObj == null) {
-            return -1;
-        }
-        if (this == otherObj) {
-            return 0;
-        }
-        if (getClass() != otherObj.getClass()) {
-            return this.hashCode() - otherObj.hashCode();
-        }
-
-        final AxPolicies other = (AxPolicies) otherObj;
-        if (!key.equals(other.key)) {
-            return key.compareTo(other.key);
-        }
-        if (!policyMap.equals(other.policyMap)) {
-            return (policyMap.hashCode() - other.policyMap.hashCode());
-        }
-
-        return 0;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxPolicy get(final AxArtifactKey conceptKey) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxPolicy>) policyMap).get(conceptKey);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxPolicy get(final String conceptKeyName) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxPolicy>) policyMap).get(conceptKeyName);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxPolicy get(final String conceptKeyName, final String conceptKeyVersion) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxPolicy>) policyMap).get(conceptKeyName,
-            conceptKeyVersion);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public Set<AxPolicy> getAll(final String conceptKeyName) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxPolicy>) policyMap).getAll(conceptKeyName);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public Set<AxPolicy> getAll(final String conceptKeyName, final String conceptKeyVersion) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxPolicy>) policyMap).getAll(conceptKeyName,
-            conceptKeyVersion);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxPolicy.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxPolicy.java
deleted file mode 100644
index a47afe4d6..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxPolicy.java
+++ /dev/null
@@ -1,508 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019-2020,2022 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import com.google.gson.annotations.SerializedName;
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Set;
-import java.util.TreeMap;
-import java.util.TreeSet;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
-import org.onap.policy.common.utils.validation.Assertions;
-import org.slf4j.ext.XLogger;
-import org.slf4j.ext.XLoggerFactory;
-
-/**
- * This class holds the definition of an Apex policy. A policy is made up of a tree of states, each represented by an
- * {@link AxState} instance. The states of a policy are held in a map in the policy. The state tree is built up at
- * policy design time by a policy editor and each state is connected to its next state by an {@link AxStateOutput}
- * instance.
- *
- * <p>Execution of a policy is triggered by an event. A policy starts execution from its first state so the trigger
- * event for the first sate is the trigger event for the entire policy. Execution from that first state can continue to
- * one or more subsequent states and so on down branches of states. The state output of the final state in a branch has
- * no next state, indicating the end of execution of that branch. Therefore, the set of output events from final states
- * in the policy are the possible set of output events on the policy. A state may only be used once in the state tree of
- * a policy and recursive execution of states in the same execution branch is not allowed, so the same state may not
- * execute more than once on a single execution of a policy.
- *
- * <p>The template of a policy is a string that can be used by policy editors to store meta information on the policy
- * that can be used at design time. The policy template string is not used during policy execution.
- *
- * <p>During validation of a policy, the validation checks listed below are executed:
- * <ol>
- * <li>The policy key must not
- * be a null key
- * <li>The policy key must be valid
- * <li>If the policy template is not set, an observation is issued
- * <li>At
- * least one state must be defined
- * <li>Keys and values must all be defined, that is not null
- * <li>The key on each entry
- * in the state map must match the key in the entry's value
- * <li>The parent key of each state in the state map of a
- * policy must be the key of that policy
- * <li>Each state must itself be valid, see validation in {@link AxState}
- * <li>The
- * next state of the state output of each state must be defined as a state in the policy
- * <li>The first state of a policy
- * must be set
- * <li>The first state of a policy must be defined in the policy
- * <li>If a state is defined but is not used
- * in a policy,a warning is issued
- * <li>The state tree of the policy must be valid, see validation in {@link AxStateTree}
- * </ol>
- */
-public class AxPolicy extends AxConcept {
-    private static final long serialVersionUID = -1775614096390365941L;
-
-    // Logger for this class
-    private static final XLogger LOGGER = XLoggerFactory.getXLogger(AxPolicy.class);
-
-    @SerializedName("policyKey")
-    private AxArtifactKey key;
-    private String template;
-
-    @SerializedName("state")
-    private Map<String, AxState> stateMap;
-    private String firstState;
-
-    /**
-     * The Default Constructor creates a policy instance with a null key, a blank template and undefined first state.
-     */
-    public AxPolicy() {
-        this(new AxArtifactKey());
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxPolicy(final AxPolicy copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The Key Constructor creates a policy instance with the given key, a blank template and undefined first state.
-     *
-     * @param key the key of the policy
-     */
-    public AxPolicy(final AxArtifactKey key) {
-        this(key,
-            "",
-            new TreeMap<>(),
-            "");
-    }
-
-    /**
-     * This Constructor creates a policy with the given key and all its fields defined.
-     *
-     * @param key        the key of the policy
-     * @param template   the policy template for policy editor metadata
-     * @param stateMap   the state map containing the states of the policy
-     * @param firstState the first state that will execute on this policy
-     */
-    public AxPolicy(final AxArtifactKey key, final String template, final Map<String, AxState> stateMap,
-                    final String firstState) {
-        super();
-        Assertions.argumentNotNull(key, "key may not be null");
-        Assertions.argumentNotNull(template, "template may not be null");
-        Assertions.argumentNotNull(stateMap, "stateMap may not be null");
-        Assertions.argumentNotNull(firstState, "firstState may not be null");
-
-        this.key = key;
-        this.template = template;
-        this.stateMap = stateMap;
-        this.firstState = firstState;
-    }
-
-    /**
-     * Gets a tree that holds all the possible execution paths for this policy. This method may be used for verification
-     * of policies, to find the branches of policy execution and the final states of policies.
-     *
-     * @return the state tree of the policy, a tree representing the execution branches of the policy
-     */
-    public AxStateTree getStateTree() {
-        return new AxStateTree(this, stateMap.get(firstState), null);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxArtifactKey getKey() {
-        return key;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = key.getKeys();
-        for (final AxState state : stateMap.values()) {
-            keyList.addAll(state.getKeys());
-        }
-        return keyList;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void buildReferences() {
-        stateMap.entrySet().stream().forEach(stateEntry -> {
-                if (!stateEntry.getValue().getKey().getLocalName().equals(AxKey.NULL_KEY_NAME)) {
-                    stateEntry.getValue().getKey().setParentArtifactKey(key);
-                }
-                stateEntry.getValue().buildReferences();
-            }
-        );
-    }
-
-    /**
-     * Sets the key of the policy.
-     *
-     * @param key the key of the policy
-     */
-    public void setKey(final AxArtifactKey key) {
-        Assertions.argumentNotNull(key, "key may not be null");
-        this.key = key;
-    }
-
-    /**
-     * Gets the policy template for policy editor metadata.
-     *
-     * @return the policy template for policy editor metadata
-     */
-    public String getTemplate() {
-        return template;
-    }
-
-    /**
-     * Sets the policy template for policy editor metadata.
-     *
-     * @param template the policy template for policy editor metadata
-     */
-    public void setTemplate(final String template) {
-        Assertions.argumentNotNull(template, "template may not be null");
-        this.template = template;
-    }
-
-    /**
-     * Gets a map containing the states of the policy.
-     *
-     * @return the map of states in the policy
-     */
-    public Map<String, AxState> getStateMap() {
-        return stateMap;
-    }
-
-    /**
-     * Sets a map containing the states of the policy.
-     *
-     * @param stateMap a map of states in the policy
-     */
-    public void setStateMap(final Map<String, AxState> stateMap) {
-        Assertions.argumentNotNull(stateMap, "stateMap may not be null");
-        this.stateMap = stateMap;
-    }
-
-    /**
-     * Gets the first state of the policy.
-     *
-     * @return the first state of the policy
-     */
-    public String getFirstState() {
-        return firstState;
-    }
-
-    /**
-     * Sets the first state of the policy.
-     *
-     * @param firstState the first state of the policy
-     */
-    public void setFirstState(final String firstState) {
-        Assertions.argumentNotNull(firstState, "firstState may not be null");
-        this.firstState = firstState;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxValidationResult validate(final AxValidationResult resultIn) {
-        AxValidationResult result = resultIn;
-
-        if (key.equals(AxArtifactKey.getNullKey())) {
-            result.addValidationMessage(
-                new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID, "key is a null key"));
-        }
-
-        result = key.validate(result);
-
-        if (template.trim().length() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.OBSERVATION,
-                "a policy template has not been specified"));
-        }
-
-        if (stateMap.size() == 0) {
-            result.addValidationMessage(
-                new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                    "stateMap may not be empty"));
-        } else {
-            for (final Entry<String, AxState> stateEntry : stateMap.entrySet()) {
-                result = validateStateEntry(stateEntry, result);
-            }
-        }
-
-        // Validation continues from this point only if all validation checks this far have been
-        // passed
-        if (!result.isOk()) {
-            return result;
-        }
-
-        // We only check the unused states on models validated this far
-        if (firstState.trim().length() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                "no first state specified, first state may not be blank"));
-        } else {
-            if (!stateMap.containsKey(firstState)) {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                    "first state not found in stateMap"));
-            } else {
-                validateStateTree(result);
-            }
-        }
-
-        return result;
-    }
-
-    /**
-     * Validate a state entry.
-     *
-     * @param stateEntry the state entry to validate
-     * @param result     The validation result to append to
-     * @return The result of the validation
-     */
-    private AxValidationResult validateStateEntry(final Entry<String, AxState> stateEntry, AxValidationResult
-        result) {
-        if (stateEntry.getKey() == null || stateEntry.getKey().equals(AxKey.NULL_KEY_NAME)) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                "key on state entry key " + stateEntry.getKey() + " may not be the null key"));
-            return result;
-        }
-
-        if (stateEntry.getValue() == null) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                "value on state entry value " + stateEntry.getKey() + " may not be null"));
-            return result;
-        }
-
-        if (!stateEntry.getKey().equals(stateEntry.getValue().getKey().getLocalName())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                "key on state entry key " + stateEntry.getKey() + " does not equal state entry value local name "
-                    + stateEntry.getValue().getKey().getLocalName()));
-        }
-
-        if (!stateEntry.getValue().getKey().getParentArtifactKey().equals(key)) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                "parent key on state entry key " + stateEntry.getValue().getKey() + " does not equal policy key"));
-        }
-
-        result = stateEntry.getValue().validate(result);
-
-        for (final AxStateOutput stateOutput : stateEntry.getValue().getStateOutputs().values()) {
-            if (!stateOutput.getNextState().equals(AxReferenceKey.getNullKey())
-                && !stateMap.containsKey(stateOutput.getNextState().getLocalName())) {
-                result.addValidationMessage(
-                    new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID, " nextState of state "
-                        + stateEntry.getKey() + " not found in StateMap: " + stateOutput.getNextState().getId()));
-            }
-        }
-
-        return result;
-    }
-
-    /**
-     * Validate a state tree to ensure there are no circular references in it.
-     *
-     * @param result The validation result to append to
-     * @return The result of the validation
-     */
-    private AxValidationResult validateStateTree(AxValidationResult result) {
-        try {
-            // Constructor validates policy state tree
-            AxStateTree policyStateTree = getStateTree();
-
-            // Check for unused states
-            final Set<AxState> referencedStateSet = policyStateTree.getReferencedStateSet();
-            final Set<AxState> unreferencedStateSet = new TreeSet<>(stateMap.values());
-            unreferencedStateSet.removeAll(referencedStateSet);
-
-            for (final AxState unreferencedState : unreferencedStateSet) {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.WARNING,
-                    "state " + unreferencedState.getKey() + " is not referenced in the policy execution tree"));
-            }
-        } catch (PolicyRuntimeException pre) {
-            AxValidationMessage validationMessage = new AxValidationMessage(key, this.getClass(),
-                ValidationResult.WARNING, "state tree in policy is invalid");
-            LOGGER.trace(validationMessage.getMessage(), pre);
-            result.addValidationMessage(validationMessage);
-        }
-
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        key.clean();
-        firstState = firstState.trim();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-        builder.append(this.getClass().getSimpleName());
-        builder.append(":(");
-        builder.append("key=");
-        builder.append(key);
-        builder.append(",template=");
-        builder.append(template);
-        builder.append(",stateMap=");
-        builder.append(stateMap);
-        builder.append(",firstState=");
-        builder.append(firstState);
-        builder.append(")");
-        return builder.toString();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxConcept copyTo(final AxConcept targetObject) {
-        Assertions.argumentNotNull(targetObject, "target may not be null");
-
-        final Object copyObject = targetObject;
-        Assertions.instanceOf(copyObject, AxPolicy.class);
-
-        final AxPolicy copy = ((AxPolicy) copyObject);
-        copy.setKey(new AxArtifactKey(key));
-        copy.setTemplate(template);
-
-        final Map<String, AxState> newStateMap = new TreeMap<>();
-        for (final Entry<String, AxState> stateMapEntry : stateMap.entrySet()) {
-            newStateMap.put(stateMapEntry.getKey(), new AxState(stateMapEntry.getValue()));
-        }
-        copy.setStateMap(newStateMap);
-
-        copy.setFirstState(firstState);
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + template.hashCode();
-        result = prime * result + stateMap.hashCode();
-        result = prime * result + firstState.hashCode();
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public boolean equals(final Object obj) {
-        if (obj == null) {
-            return false;
-        }
-        if (this == obj) {
-            return true;
-        }
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-
-        final AxPolicy other = (AxPolicy) obj;
-        if (!key.equals(other.key)) {
-            return false;
-        }
-        if (!template.equals(other.template)) {
-            return false;
-        }
-        if (!stateMap.equals(other.stateMap)) {
-            return false;
-        }
-        return firstState.equals(other.firstState);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxConcept otherObj) {
-        if (otherObj == null) {
-            return -1;
-        }
-        if (this == otherObj) {
-            return 0;
-        }
-        if (getClass() != otherObj.getClass()) {
-            return this.hashCode() - otherObj.hashCode();
-        }
-
-        final AxPolicy other = (AxPolicy) otherObj;
-        if (!key.equals(other.key)) {
-            return key.compareTo(other.key);
-        }
-        if (!template.equals(other.template)) {
-            return template.compareTo(other.template);
-        }
-        if (!stateMap.equals(other.stateMap)) {
-            return (stateMap.hashCode() - other.stateMap.hashCode());
-        }
-        return firstState.compareTo(other.firstState);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxPolicyModel.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxPolicyModel.java
deleted file mode 100644
index e119536fb..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxPolicyModel.java
+++ /dev/null
@@ -1,661 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019,2022 Nordix Foundation.
- *  Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
- *  Modifications Copyright (C) 2021 Bell Canada. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import java.util.List;
-import java.util.Map.Entry;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKeyInformation;
-import org.onap.policy.apex.model.basicmodel.concepts.AxModel;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
-import org.onap.policy.apex.model.basicmodel.service.ModelService;
-import org.onap.policy.apex.model.contextmodel.concepts.AxContextAlbum;
-import org.onap.policy.apex.model.contextmodel.concepts.AxContextAlbums;
-import org.onap.policy.apex.model.contextmodel.concepts.AxContextModel;
-import org.onap.policy.apex.model.contextmodel.concepts.AxContextSchemas;
-import org.onap.policy.apex.model.eventmodel.concepts.AxEvent;
-import org.onap.policy.apex.model.eventmodel.concepts.AxEvents;
-import org.onap.policy.apex.model.eventmodel.concepts.AxField;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * A container class for an Apex policy model. This class is a container class that allows an Apex
- * model to be constructed that contains definitions of all the context, event, and policy concepts
- * required to run policies in Apex. The model contains schema definitions, definitions of events
- * and context albums that use those schemas, definitions of tasks for policies and definitions of
- * the policies themselves.
- *
- * <p>An Apex policy model is an important artifact in Apex. At editing time, an Apex editor creates
- * and edits a policy model and a policy model is loaded into and is executed by an Apex engine.
- * Therefore, an Apex model and the set of policies that it holds is the way that the policy domain
- * that an Apex engine or a group of Apex engines executes across is expressed, both at design time
- * and run time. The Apex deployment system is responsible for deploying Apex models to and the
- * context they need the appropriate engines for execution.
- *
- * <p>Model registration is carried out by calling the {@code register()} method, which registers the
- * policy model and all its constituent containers with the model service. The containers for
- * context schemas, events, context albums, tasks, policies, and key information are all registered.
- *
- * <p>Once a policy model is composed, the overall structure of the policy model and all its references
- * can be validated. During validation of a policy model, the validation checks listed below are
- * executed:
- * <ol>
- * <li>The policy model is validated as an Apex model, which validates the existence, correctness,
- * and duplication of all keys in the model as well as validating the key information of the keys,
- * see validation in {@link AxModel}
- * <li>The schemas in the model must be valid, see validation in {@link AxContextSchemas}
- * <li>The context albums in the model must be valid, see validation in {@link AxContextAlbums}
- * <li>The tasks in the model must be valid, see validation in {@link AxTasks}
- * <li>The policies in the model must be valid, see validation in {@link AxPolicies}
- * <li>The events in the model must be valid, see validation in {@link AxEvents}
- * <li>The context schemas referred to in each field in every event must exist
- * <li>The context schemas referred to in every context album must exist
- * <li>The context schemas referred to in every task input field and output field must exist
- * <li>The context albums referred to in every task must exist
- * <li>The context albums referred to in every state must exist
- * <li>The trigger event referred to in every state must exist
- * <li>The default task referred to in every state must exist
- * <li>In a state, an event that triggers a task must contain all the input fields required by that
- * task
- * <li>In a state, an event that is emitted by a task must contain all the output fields produced by
- * that task
- * <li>All tasks referred to by a state must exist
- * <li>All events referred to on direct state outputs must exist
- * </ol>
- */
-public class AxPolicyModel extends AxModel {
-    // @formatter:off
-    private static final String SCHEMAS_TOKEN  = "_Schemas";
-    private static final String KEY_INFO_TOKEN  = "_KeyInfo";
-    private static final String EVENTS_TOKEN    = "_Events";
-    private static final String ALBUMS_TOKEN    = "_Albums";
-    private static final String TASKS_TOKEN     = "_Tasks";
-    private static final String POLICIESS_TOKEN = "_Policies";
-
-    private static final String DOES_NOT_EXIST = " does not exist";
-
-    private static final long serialVersionUID = 8800599637708309945L;
-
-    private AxPolicies policies;
-    private AxTasks tasks;
-    private AxEvents events;
-    private AxContextAlbums albums;
-    private AxContextSchemas schemas;
-
-    /**
-     * The Default Constructor creates a policy model with a null key and empty containers for
-     * schemas, key information, events, context albums, tasks and policies.
-     */
-    public AxPolicyModel() {
-        this(new AxArtifactKey());
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxPolicyModel(final AxPolicyModel copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The Keyed Constructor creates a policy model with the given key and empty containers for
-     * schemas, key information, events, context albums, tasks and policies.
-     *
-     * @param key the key
-     */
-    public AxPolicyModel(final AxArtifactKey key) {
-        this(key,
-            new AxContextSchemas(new AxArtifactKey(key.getName() + SCHEMAS_TOKEN, key.getVersion())),
-            new AxKeyInformation(new AxArtifactKey(key.getName() + KEY_INFO_TOKEN, key.getVersion())),
-            new AxEvents(new AxArtifactKey(key.getName() + EVENTS_TOKEN, key.getVersion())),
-            new AxContextAlbums(new AxArtifactKey(key.getName() + ALBUMS_TOKEN, key.getVersion())),
-            new AxTasks(new AxArtifactKey(key.getName() + TASKS_TOKEN,  key.getVersion())),
-            new AxPolicies(new AxArtifactKey(key.getName() + POLICIESS_TOKEN, key.getVersion())));
-    }
-
-    /**
-     * This Constructor creates a policy model with all of its fields specified.
-     *
-     * @param key the key of the policy model
-     * @param schemas the context schema container for the policy model
-     * @param keyInformation the key information container for the policy model
-     * @param events the event container for the policy model
-     * @param albums the context album container for the policy model
-     * @param tasks the task container for the policy model
-     * @param policies the policy container for the policy model
-     */
-    public AxPolicyModel(final AxArtifactKey key, final AxContextSchemas schemas, final AxKeyInformation keyInformation,
-        final AxEvents events, final AxContextAlbums albums, final AxTasks tasks, final AxPolicies policies) {
-        super(key, keyInformation);
-        Assertions.argumentNotNull(schemas, "schemas may not be null");
-        Assertions.argumentNotNull(events, "events may not be null");
-        Assertions.argumentNotNull(albums, "albums may not be null");
-        Assertions.argumentNotNull(tasks, "tasks may not be null");
-        Assertions.argumentNotNull(policies, "policies may not be null");
-
-        this.schemas = schemas;
-        this.events = events;
-        this.albums = albums;
-        this.tasks = tasks;
-        this.policies = policies;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void register() {
-        super.register();
-        ModelService.registerModel(AxContextSchemas.class, getSchemas());
-        ModelService.registerModel(AxEvents.class, getEvents());
-        ModelService.registerModel(AxContextAlbums.class, getAlbums());
-        ModelService.registerModel(AxTasks.class, getTasks());
-        ModelService.registerModel(AxPolicies.class, getPolicies());
-        ModelService.registerModel(AxPolicyModel.class, this);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = super.getKeys();
-
-        keyList.addAll(schemas.getKeys());
-        keyList.addAll(events.getKeys());
-        keyList.addAll(albums.getKeys());
-        keyList.addAll(tasks.getKeys());
-        keyList.addAll(policies.getKeys());
-
-        return keyList;
-    }
-
-    /**
-     * Gets a context model from the policy model.
-     *
-     * @return the context model
-     */
-    public AxContextModel getContextModel() {
-        return new AxContextModel(new AxArtifactKey(albums.getKey().getName() + "_Model", albums.getKey().getVersion()),
-            getSchemas(), getAlbums(), getKeyInformation());
-    }
-
-    /**
-     * Gets the policy container from the policy model.
-     *
-     * @return the policy container with all the policies in the model
-     */
-    public AxPolicies getPolicies() {
-        return policies;
-    }
-
-    /**
-     * Sets the policy container for the policy model.
-     *
-     * @param policies the policy container with all the policies in the model
-     */
-    public void setPolicies(final AxPolicies policies) {
-        Assertions.argumentNotNull(policies, "policies may not be null");
-        this.policies = policies;
-    }
-
-    /**
-     * Gets the task container from the policy model.
-     *
-     * @return the task container with all the tasks in the model
-     */
-    public AxTasks getTasks() {
-        return tasks;
-    }
-
-    /**
-     * Sets the task container from the policy model.
-     *
-     * @param tasks the task container with all the tasks in the model
-     */
-    public void setTasks(final AxTasks tasks) {
-        Assertions.argumentNotNull(tasks, "tasks may not be null");
-        this.tasks = tasks;
-    }
-
-    /**
-     * Gets the event container from the policy model.
-     *
-     * @return the event container with all the events in the model
-     */
-    public AxEvents getEvents() {
-        return events;
-    }
-
-    /**
-     * Sets the event container from the policy model.
-     *
-     * @param events the event container with all the events in the model
-     */
-    public void setEvents(final AxEvents events) {
-        Assertions.argumentNotNull(events, "events may not be null");
-        this.events = events;
-    }
-
-    /**
-     * Gets the context album container from the policy model.
-     *
-     * @return the context album container with all the context albums in the model
-     */
-    public AxContextAlbums getAlbums() {
-        return albums;
-    }
-
-    /**
-     * Sets the context album container from the policy model.
-     *
-     * @param albums the context album container with all the context albums in the model
-     */
-    public void setAlbums(final AxContextAlbums albums) {
-        Assertions.argumentNotNull(albums, "albums may not be null");
-        this.albums = albums;
-    }
-
-    /**
-     * Gets the context schema container from the policy model.
-     *
-     * @return the context schema container with all the context schemas in the model
-     */
-    public AxContextSchemas getSchemas() {
-        return schemas;
-    }
-
-    /**
-     * Sets the context schema container from the policy model.
-     *
-     * @param schemas the context schema container with all the context schemas in the model
-     */
-    public void setSchemas(final AxContextSchemas schemas) {
-        Assertions.argumentNotNull(schemas, "schemas may not be null");
-        this.schemas = schemas;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxValidationResult validate(final AxValidationResult resultIn) {
-        AxValidationResult result = resultIn;
-
-        result = super.validate(result);
-        result = schemas.validate(result);
-        result = events.validate(result);
-        result = albums.validate(result);
-        result = tasks.validate(result);
-        result = policies.validate(result);
-
-        validateEventKeys(result);
-        validateContextAlbumKeys(result);
-        validateAllTaskKeys(result);
-        validatePolicyKeys(result);
-
-        return result;
-    }
-
-    /**
-     * Validate all fundamental concepts keyed in events exist.
-     *
-     * @param result the validation result to return
-     * @return the result
-     */
-    private AxValidationResult validateEventKeys(final AxValidationResult result) {
-        for (final AxEvent event : events.getAll(null)) {
-            for (final AxField field : event.getFields()) {
-                if (getSchemas().get(field.getSchema()) == null) {
-                    result.addValidationMessage(
-                        new AxValidationMessage(event.getKey(), this.getClass(), ValidationResult.INVALID,
-                            "event field data type " + field.getSchema().getId() + DOES_NOT_EXIST));
-                }
-            }
-        }
-        return result;
-    }
-
-    /**
-     * Validate all fundamental concepts keyed in concept maps exist.
-     *
-     * @param result the validation result to return
-     * @return the result
-     */
-    private AxValidationResult validateContextAlbumKeys(final AxValidationResult result) {
-        for (final AxContextAlbum contextAlbum : albums.getAll(null)) {
-            if (getSchemas().get(contextAlbum.getItemSchema()) == null) {
-                result.addValidationMessage(
-                    new AxValidationMessage(contextAlbum.getKey(), this.getClass(), ValidationResult.INVALID,
-                        "context album schema " + contextAlbum.getItemSchema().getId() + DOES_NOT_EXIST));
-            }
-        }
-        return result;
-    }
-
-    /**
-     * Validate all fundamental concepts keyed in tasks exist.
-     *
-     * @param result the validation result to return
-     * @return the result
-     */
-    private AxValidationResult validateAllTaskKeys(AxValidationResult result) {
-        for (final AxTask task : tasks.getAll(null)) {
-            validateTaskKeys(task, result);
-        }
-        return result;
-    }
-
-    /**
-     * Validate all fundamental concepts keyed in tasks exist.
-     *
-     * @param task The task to validate the keys of
-     * @param result the validation result to return
-     * @return the result
-     */
-    private AxValidationResult validateTaskKeys(final AxTask task, AxValidationResult result) {
-        for (final AxArtifactKey contextAlbumKey : task.getContextAlbumReferences()) {
-            if (albums.get(contextAlbumKey) == null) {
-                result.addValidationMessage(new AxValidationMessage(task.getKey(), this.getClass(),
-                    ValidationResult.INVALID, "task context album " + contextAlbumKey.getId() + DOES_NOT_EXIST));
-            }
-        }
-        return result;
-    }
-
-    /**
-     * Validate all fundamental concepts keyed in policies exist.
-     *
-     * @param result the validation result to return
-     * @return the result
-     */
-    private AxValidationResult validatePolicyKeys(final AxValidationResult result) {
-        for (final AxPolicy policy : policies.getAll(null)) {
-            for (final AxState state : policy.getStateMap().values()) {
-                validateStateReferences(state, result);
-            }
-        }
-
-        return result;
-    }
-
-    /**
-     * Validate that the references used on a state are valid.
-     *
-     * @param state The state to check
-     * @param result the validation result to append to
-     */
-    private void validateStateReferences(AxState state, AxValidationResult result) {
-        for (final AxArtifactKey contextAlbumKey : state.getContextAlbumReferences()) {
-            if (albums.get(contextAlbumKey) == null) {
-                result.addValidationMessage(new AxValidationMessage(state.getKey(), this.getClass(),
-                    ValidationResult.INVALID, "state context album " + contextAlbumKey.getId() + DOES_NOT_EXIST));
-            }
-        }
-
-        final AxEvent triggerEvent = events.getEventMap().get(state.getTrigger());
-        if (triggerEvent == null) {
-            result.addValidationMessage(new AxValidationMessage(state.getKey(), this.getClass(),
-                ValidationResult.INVALID, "state trigger event " + state.getTrigger().getId() + DOES_NOT_EXIST));
-        }
-
-        final AxTask defaultTask = tasks.getTaskMap().get(state.getDefaultTask());
-        if (defaultTask == null) {
-            result.addValidationMessage(new AxValidationMessage(state.getKey(), this.getClass(),
-                ValidationResult.INVALID, "state default task " + state.getDefaultTask().getId() + DOES_NOT_EXIST));
-        }
-
-        for (final AxStateOutput stateOutput : state.getStateOutputs().values()) {
-            if (events.getEventMap().get(stateOutput.getOutgoingEvent()) == null) {
-                result.addValidationMessage(new AxValidationMessage(stateOutput.getKey(), this.getClass(),
-                    ValidationResult.INVALID, "output event " + stateOutput.getOutgoingEvent().getId()
-                        + " for state output " + stateOutput.getId() + DOES_NOT_EXIST));
-            }
-        }
-
-        validateEventTaskFieldCompatibilityOnState(state, result);
-    }
-
-    /**
-     * Validate that the fields on tasks and events that trigger them and are output by them are
-     * compatible for all tasks used on a state.
-     *
-     * @param state The state to check
-     * @param result the validation result to append to
-     */
-    private void validateEventTaskFieldCompatibilityOnState(AxState state, AxValidationResult result) {
-        // Check task output fields and event fields are compatible for tasks that directly
-        // reference state outputs
-        for (final Entry<AxArtifactKey, AxStateTaskReference> taskRefEntry : state.getTaskReferences().entrySet()) {
-            if (!taskRefEntry.getValue().getStateTaskOutputType().equals(AxStateTaskOutputType.DIRECT)) {
-                continue;
-            }
-
-            final AxTask usedTask = tasks.getTaskMap().get(taskRefEntry.getKey());
-            if (usedTask == null) {
-                result.addValidationMessage(new AxValidationMessage(state.getKey(), this.getClass(),
-                    ValidationResult.INVALID, "state task " + taskRefEntry.getKey().getId() + DOES_NOT_EXIST));
-            } else {
-                AxStateOutput stateOutput =
-                    state.getStateOutputs().get(taskRefEntry.getValue().getOutput().getKey().getLocalName());
-                validateEventTaskFieldCompatibilityOnStateOutput(state, usedTask, stateOutput, result);
-            }
-        }
-    }
-
-    /**
-     * Validate that the fields on a task of a state output and the events that trigger it are
-     * compatible.
-     *
-     * @param state The state to check
-     * @param task The task to check
-     * @param stateOutput The state output to check
-     * @param result the validation result to append to
-     */
-    private void validateEventTaskFieldCompatibilityOnStateOutput(final AxState state, final AxTask task,
-        final AxStateOutput stateOutput, AxValidationResult result) {
-        if (stateOutput == null) {
-            result.addValidationMessage(new AxValidationMessage(state.getKey(), this.getClass(),
-                ValidationResult.INVALID, "state output on task reference for task " + task.getId() + " is null"));
-
-        } else {
-            final AxEvent usedEvent = events.getEventMap().get(stateOutput.getOutgoingEvent());
-            if (usedEvent == null) {
-                result.addValidationMessage(new AxValidationMessage(stateOutput.getKey(), this.getClass(),
-                    ValidationResult.INVALID, "output event " + stateOutput.getOutgoingEvent().getId()
-                        + " for state output " + stateOutput.getId() + DOES_NOT_EXIST));
-            }
-        }
-    }
-
-    /**
-     * When a model is deserialized, if the albums field was missing a blank
-     * with a null key was added. This method is called by JAXB after deserializing and is
-     * used to insert an appropriate key
-     */
-    @Override
-    public void buildReferences() {
-        getSchemas().buildReferences();
-        getEvents().buildReferences();
-        getAlbums().buildReferences();
-        getTasks().buildReferences();
-        getPolicies().buildReferences();
-        getKeyInformation().buildReferences();
-
-        AxArtifactKey nullAlbumskey = new AxArtifactKey(AxKey.NULL_KEY_NAME + ALBUMS_TOKEN, AxKey.NULL_KEY_VERSION);
-
-        if (AxArtifactKey.getNullKey().equals(getAlbums().getKey())
-            || nullAlbumskey.equals(getAlbums().getKey())) {
-            getAlbums().setKey(new AxArtifactKey(getKey().getName() + ALBUMS_TOKEN, getKey().getVersion()));
-            getKeyInformation().generateKeyInfo(getAlbums());
-        }
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        super.clean();
-        policies.clean();
-        tasks.clean();
-        events.clean();
-        albums.clean();
-        schemas.clean();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-        builder.append(this.getClass().getSimpleName());
-        builder.append(":(");
-        builder.append(super.toString());
-        builder.append(",policies=");
-        builder.append(policies);
-        builder.append(",tasks=");
-        builder.append(tasks);
-        builder.append(",events=");
-        builder.append(events);
-        builder.append(",albums=");
-        builder.append(albums);
-        builder.append(",schemas=");
-        builder.append(schemas);
-        builder.append(")");
-        return builder.toString();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxConcept copyTo(final AxConcept targetObject) {
-        Assertions.argumentNotNull(targetObject, "target may not be null");
-
-        final Object copyObject = targetObject;
-        Assertions.instanceOf(copyObject, AxPolicyModel.class);
-
-        final AxPolicyModel copy = ((AxPolicyModel) copyObject);
-        super.copyTo(targetObject);
-        copy.setPolicies(new AxPolicies(policies));
-        copy.setTasks(new AxTasks(tasks));
-        copy.setEvents(new AxEvents(events));
-        copy.setAlbums(new AxContextAlbums(albums));
-        copy.setSchemas(new AxContextSchemas(schemas));
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + super.hashCode();
-        result = prime * result + policies.hashCode();
-        result = prime * result + tasks.hashCode();
-        result = prime * result + events.hashCode();
-        result = prime * result + albums.hashCode();
-        result = prime * result + schemas.hashCode();
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public boolean equals(final Object obj) {
-        if (obj == null) {
-            throw new IllegalArgumentException("comparison object may not be null");
-        }
-
-        if (this == obj) {
-            return true;
-        }
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-
-        final AxPolicyModel other = (AxPolicyModel) obj;
-        if (!super.equals(other)) {
-            return false;
-        }
-        if (!policies.equals(other.policies)) {
-            return false;
-        }
-        if (!tasks.equals(other.tasks)) {
-            return false;
-        }
-        if (!events.equals(other.events)) {
-            return false;
-        }
-        if (!albums.equals(other.albums)) {
-            return false;
-        }
-        return schemas.equals(other.schemas);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxConcept otherObj) {
-        Assertions.argumentNotNull(otherObj, "comparison object may not be null");
-
-        if (this == otherObj) {
-            return 0;
-        }
-        if (getClass() != otherObj.getClass()) {
-            return this.hashCode() - otherObj.hashCode();
-        }
-
-        final AxPolicyModel other = (AxPolicyModel) otherObj;
-        if (!super.equals(other)) {
-            return super.compareTo(other);
-        }
-        if (!policies.equals(other.policies)) {
-            return policies.compareTo(other.policies);
-        }
-        if (!tasks.equals(other.tasks)) {
-            return tasks.compareTo(other.tasks);
-        }
-        if (!events.equals(other.events)) {
-            return events.compareTo(other.events);
-        }
-        if (!albums.equals(other.albums)) {
-            return albums.compareTo(other.albums);
-        }
-        return schemas.compareTo(other.schemas);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxState.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxState.java
deleted file mode 100644
index ae8efbff4..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxState.java
+++ /dev/null
@@ -1,870 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2018 Samsung Electronics Co., Ltd.
- *  Modifications Copyright (C) 2019-2022 Nordix Foundation.
- *  Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import com.google.gson.annotations.SerializedName;
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Set;
-import java.util.TreeMap;
-import java.util.TreeSet;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKeyUse;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * This class holds the definition of a single state in a policy. A state is a single stage in a policy. A state has a
- * single input event, its trigger. A state can output many events, but can only output one event on a single execution.
- * After it executes, a state can pass control to another state or can simply emit its event to an external system. In
- * the case where a state passes control to another state, the output event of the state becomes the input event of the
- * next state. The outputs of a state {@link AxStateOutput} are held as a map in the state. Each state output contains
- * the outgoing event of the state and optionally the next state to pass control to.
- *
- * <p>A state uses tasks {@link AxTask} to execute its logic. A state holds its tasks in a map and must have at least
- * one task. A state uses Task Selection Logic {@link AxTaskSelectionLogic} to select which task should be executed in a
- * given execution cycle. Optional Task Selection Logic can use fields on the incoming event and information from the
- * context albums available on the state to decide what task to execute in a given context. The default task of a state
- * is the task that is executed when task Selection Logic is not specified. In cases where only a single task is
- * specified on a state, the default task must be that task and the state always executes that task.
- *
- * <p>What happens when a state completes its execution cycle depends on the task that is selected for execution by the
- * state. Therefore, the action to be performed a state on execution of each task must be defined in the state as a
- * {@link AxStateTaskReference} instance for each task defined in the state. The {@link AxStateTaskReference} instance
- * defines the action to be performed as either a {@link AxStateTaskOutputType} of {@link AxStateTaskOutputType#DIRECT}
- * or {@link AxStateTaskOutputType#LOGIC} and contains an {@link AxReferenceKey} reference to the instance that will
- * complete the state output.
- *
- * <p>In the case of direct output, the {@link AxReferenceKey} reference in the {@link AxStateTaskReference} instance is
- * a reference to an {@link AxStateOutput} instance. The state output defines the event to be emitted by the state and
- * the next state to pass control to if any. All fields of the executed task are marshaled onto the outgoing event
- * automatically by Apex.
- *
- * <p>In the case of logic output, the {@link AxReferenceKey} reference in the {@link AxStateTaskReference} instance is
- * a reference to State Finalizer Logic in an {@link AxStateFinalizerLogic} instance, which selects the
- * {@link AxStateOutput} that the state will use. The state finalizer logic uses fields emitted by the executed task and
- * information from the context albums available on the state to decide what {@link AxStateOutput} to select in a given
- * context. The state output defines the event to be emitted by the state and the next state to pass control to if any.
- * The State Finalizer Logic instances for the state are held in a map in the state. State Finalizer Logic must marshal
- * the fields of the output event in whatever manner it wishes; Apex does not automatically transfer the output fields
- * from the task directly to the output event.
- *
- * <p>The Task Selection Logic instance or State Finalizer Logic instances in a state may use information in context
- * albums to arrive at their task or state output selections. The context albums that the state uses and that should be
- * made available to the state by Apex policy distribution are held as a set of references to context albums in the
- * state.
- *
- * <p>During validation of a state, the validation checks listed below are executed: <ol> <li>The policy key must not be
- * a null key and must be valid, see validation in {@link AxReferenceKey} <li>The trigger event key must not be a null
- * key and must be valid, see validation in {@link AxArtifactKey} <li>At least one state output must be defined <li>Each
- * state output in a state must have that state as its parent <li>Each state output must be valid, see validation in
- * {@link AxStateOutput} <li>The next state defined in a state output must be unique in a state <li>The default task key
- * must not be a null key and must be valid, see validation in {@link AxArtifactKey} <li>The default task must appear in
- * the task map of the state <li>At least one task must be defined on the state <li>Each task key on the task map for
- * the state must not be a null key and must be valid, see validation in {@link AxArtifactKey} <li>All state task
- * references for each task in the state must exist and must be valid, see validation in {@link AxStateTaskReference}
- * <li>Each state task reference in a state must have that state as its parent <li>For direct state outputs from tasks,
- * the state output must be defined on the state <li>For logic state outputs from tasks, the State Finalizer Logic must
- * be defined on the state <li>An observation is issued for each state output defined on the state that is not used as a
- * direct output on a task <li>An observation is issued for each state finalizer logic instance defined on the state
- * that is not used as an output on a task <li>Each context album key on the context album set for the state must not be
- * a null key and must be valid, see validation in {@link AxArtifactKey} <li>Task Selection logic in a state must have
- * that state as its parent <li>Task Selection logic in a state must be valid, see validation in
- * {@link AxTaskSelectionLogic} <li>Each State Finalizer logic instance in a state must have that state as its parent
- * <li>Each State Finalizer logic instance in a state must be valid, see validation in {@link AxStateFinalizerLogic}
- * </ol>
- */
-public class AxState extends AxConcept {
-    private static final String DOES_NOT_EQUAL_STATE_KEY = " does not equal state key";
-
-    private static final long serialVersionUID = 8041771382337655535L;
-
-
-
-    @SerializedName("stateKey")
-    private AxReferenceKey key;
-
-    private AxArtifactKey trigger;
-    private Map<String, AxStateOutput> stateOutputs;
-
-    @SerializedName("contextAlbumReference")
-    private Set<AxArtifactKey> contextAlbumReferenceSet;
-
-    private AxTaskSelectionLogic taskSelectionLogic;
-    private Map<String, AxStateFinalizerLogic> stateFinalizerLogicMap;
-    private AxArtifactKey defaultTask;
-
-    @SerializedName("taskReferences")
-    private Map<AxArtifactKey, AxStateTaskReference> taskReferenceMap;
-
-    /**
-     * The Default Constructor creates a state with a null reference key and with default values for all other fields.
-     */
-    public AxState() {
-        this(new AxReferenceKey());
-        contextAlbumReferenceSet = new TreeSet<>();
-        taskReferenceMap = new TreeMap<>();
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxState(final AxState copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The Keyed Constructor creates a state with the given reference key and with default values for all other fields.
-     *
-     * @param key the reference key of the state
-     */
-    public AxState(final AxReferenceKey key) {
-        // @formatter:off
-        this(new AxStateParamsBuilder()
-                        .key(key)                                                             // Key
-                        .trigger(AxArtifactKey.getNullKey())                                  // Trigger Reference
-                        .stateOutputs(new TreeMap<>())                                        // State Outputs
-                        .contextAlbumReferenceSet(new TreeSet<>())                            // Context Album Refs
-                        .taskSelectionLogic(new AxTaskSelectionLogic())                       // Task Selection Logic
-                        .stateFinalizerLogicMap(new TreeMap<>())                              // State Finalizer Logics
-                        .defaultTask(AxArtifactKey.getNullKey())                              // Default Task
-                        .taskReferenceMap(new TreeMap<>())                                    // Task References
-        );
-        // @formatter:on
-    }
-
-    /**
-     * This Constructor creates a state with all its fields defined.
-     *
-     * @param axStateParams parameters for state creation
-     */
-    // CHECKSTYLE:OFF: checkstyle:parameterNumber
-    public AxState(AxStateParamsBuilder axStateParams) {
-        super();
-        Assertions.argumentNotNull(axStateParams.getKey(), "key may not be null");
-        Assertions.argumentNotNull(axStateParams.getTrigger(), "trigger may not be null");
-        Assertions.argumentNotNull(axStateParams.getStateOutputs(), "stateOutputs may not be null");
-        Assertions.argumentNotNull(axStateParams.getContextAlbumReferenceSet(),
-                        "contextAlbumReferenceSet may not be null");
-        Assertions.argumentNotNull(axStateParams.getTaskSelectionLogic(), "taskSelectionLogic may not be null");
-        Assertions.argumentNotNull(axStateParams.getStateFinalizerLogicMap(), "stateFinalizerLogicMap may not be null");
-        Assertions.argumentNotNull(axStateParams.getDefaultTask(), "defaultTask may not be null");
-        Assertions.argumentNotNull(axStateParams.getTaskReferenceMap(), "taskReferenceMap may not be null");
-
-        this.key = axStateParams.getKey();
-        this.trigger = axStateParams.getTrigger();
-        this.stateOutputs = axStateParams.getStateOutputs();
-        this.contextAlbumReferenceSet = axStateParams.getContextAlbumReferenceSet();
-        this.taskSelectionLogic = axStateParams.getTaskSelectionLogic();
-        this.stateFinalizerLogicMap = axStateParams.getStateFinalizerLogicMap();
-        this.defaultTask = axStateParams.getDefaultTask();
-        this.taskReferenceMap = axStateParams.getTaskReferenceMap();
-    }
-    // CHECKSTYLE:ON: checkstyle:parameterNumber
-
-    /**
-     * When a state is deserialized from disk or from the database, the parent of contained objects is not defined. This
-     * method is called by JAXB after deserialized and is used to set the parent keys of all
-     * {@link AxTaskSelectionLogic}, {@link AxStateOutput}, and {@link AxStateFinalizerLogic} instance in the state.
-     */
-    @Override
-    public void buildReferences() {
-        if (!taskSelectionLogic.getKey().getLocalName().equals(AxKey.NULL_KEY_NAME)) {
-            taskSelectionLogic.getKey().setParentReferenceKey(key);
-        }
-
-        stateOutputs.values().stream().forEach(output -> output.getKey().setParentReferenceKey(key));
-        stateFinalizerLogicMap.values().stream().forEach(output -> output.getKey().setParentReferenceKey(key));
-        taskReferenceMap.values().stream().forEach(output -> output.getKey().setParentReferenceKey(key));
-    }
-
-    /**
-     * Gets the names of all the states that this state may pass control to.
-     *
-     * @return the list of possible states that may receive control when this state completes execution
-     */
-    public Set<String> getNextStateSet() {
-        final Set<String> nextStateSet = new TreeSet<>();
-
-        for (final AxStateOutput stateOutput : stateOutputs.values()) {
-            nextStateSet.add(stateOutput.getNextState().getLocalName());
-        }
-        return nextStateSet;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxReferenceKey getKey() {
-        return key;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = key.getKeys();
-        keyList.add(new AxKeyUse(trigger.getKey()));
-        for (final AxStateOutput stateOutput : stateOutputs.values()) {
-            keyList.addAll(stateOutput.getKeys());
-        }
-        for (final AxArtifactKey contextAlbumReferenceKey : contextAlbumReferenceSet) {
-            keyList.add(new AxKeyUse(contextAlbumReferenceKey));
-        }
-        if (!taskSelectionLogic.getKey().equals(AxReferenceKey.getNullKey())) {
-            keyList.addAll(taskSelectionLogic.getKeys());
-        }
-        for (final Entry<String, AxStateFinalizerLogic> stateFinalizerLogicEntry : stateFinalizerLogicMap.entrySet()) {
-            keyList.addAll(stateFinalizerLogicEntry.getValue().getKeys());
-        }
-        keyList.add(new AxKeyUse(defaultTask.getKey()));
-        for (final Entry<AxArtifactKey, AxStateTaskReference> taskReferenceEntry : taskReferenceMap.entrySet()) {
-            keyList.add(new AxKeyUse(taskReferenceEntry.getKey()));
-
-            // A state output is allowed to be used more than once but we only return one usage as a
-            // key
-            for (AxKey referencedKey : taskReferenceEntry.getValue().getKeys()) {
-                if (keyList.contains(referencedKey)) {
-                    keyList.add(referencedKey);
-                }
-            }
-        }
-        return keyList;
-    }
-
-    /**
-     * Sets the reference key of the state.
-     *
-     * @param key the state reference key
-     */
-    public void setKey(final AxReferenceKey key) {
-        Assertions.argumentNotNull(key, "key may not be null");
-        this.key = key;
-    }
-
-    /**
-     * Gets the event that triggers the state.
-     *
-     * @return the event that triggers the state
-     */
-    public AxArtifactKey getTrigger() {
-        return trigger;
-    }
-
-    /**
-     * Sets the event that triggers the state.
-     *
-     * @param trigger the event that triggers the state
-     */
-    public void setTrigger(final AxArtifactKey trigger) {
-        Assertions.argumentNotNull(trigger, "trigger may not be null");
-        this.trigger = trigger;
-    }
-
-    /**
-     * Gets the possible state outputs for the state.
-     *
-     * @return the the possible state outputs for the state
-     */
-    public Map<String, AxStateOutput> getStateOutputs() {
-        return stateOutputs;
-    }
-
-    /**
-     * Sets the the possible state outputs for the state.
-     *
-     * @param stateOutputs the the possible state outputs for the state
-     */
-    public void setStateOutputs(final Map<String, AxStateOutput> stateOutputs) {
-        Assertions.argumentNotNull(stateOutputs, "stateOutputs may not be null");
-        this.stateOutputs = stateOutputs;
-    }
-
-    /**
-     * Gets the context album reference set defines the context that may be used by Task Selection Logic and State
-     * Finalizer Logic in the state.
-     *
-     * @return the context album reference set defines the context that may be used by Task Selection Logic and State
-     *         Finalizer Logic in the state
-     */
-    public Set<AxArtifactKey> getContextAlbumReferences() {
-        return contextAlbumReferenceSet;
-    }
-
-    /**
-     * Sets the context album reference set defines the context that may be used by Task Selection Logic and State
-     * Finalizer Logic in the state.
-     *
-     * @param contextAlbumReferences the context album reference set defines the context that may be used by Task
-     *        Selection Logic and State Finalizer Logic in the state
-     */
-    public void setContextAlbumReferences(final Set<AxArtifactKey> contextAlbumReferences) {
-        Assertions.argumentNotNull(contextAlbumReferences, "contextAlbumReferenceSet may not be null");
-        this.contextAlbumReferenceSet = contextAlbumReferences;
-    }
-
-    /**
-     * Gets the task selection logic that selects the task a state executes in an execution cycle.
-     *
-     * @return the task selection logic that selects the task a state executes in an execution cycle
-     */
-    public AxTaskSelectionLogic getTaskSelectionLogic() {
-        return taskSelectionLogic;
-    }
-
-    /**
-     * Sets the task selection logic that selects the task a state executes in an execution cycle.
-     *
-     * @param taskSelectionLogic the task selection logic that selects the task a state executes in an execution cycle
-     */
-    public void setTaskSelectionLogic(final AxTaskSelectionLogic taskSelectionLogic) {
-        Assertions.argumentNotNull(taskSelectionLogic, "taskSelectionLogic may not be null");
-        this.taskSelectionLogic = taskSelectionLogic;
-    }
-
-    /**
-     * Check if task selection logic has been specified the state.
-     *
-     * @return true, if task selection logic has been specified
-     */
-    public boolean checkSetTaskSelectionLogic() {
-        return !taskSelectionLogic.getKey().equals(AxReferenceKey.getNullKey());
-    }
-
-    /**
-     * Gets the state finalizer logic instances that selects the state output to use after a task executes in a state
-     * execution cycle.
-     *
-     * @return the state finalizer logic instances that selects the state output to use after a task executes in a state
-     *         execution cycle
-     */
-    public Map<String, AxStateFinalizerLogic> getStateFinalizerLogicMap() {
-        return stateFinalizerLogicMap;
-    }
-
-    /**
-     * Sets the state finalizer logic instances that selects the state output to use after a task executes in a state
-     * execution cycle.
-     *
-     * @param stateFinalizerLogicMap the state finalizer logic instances that selects the state output to use after a
-     *        task executes in a state execution cycle
-     */
-    public void setStateFinalizerLogicMap(final Map<String, AxStateFinalizerLogic> stateFinalizerLogicMap) {
-        Assertions.argumentNotNull(stateFinalizerLogicMap, "stateFinalizerLogic may not be null");
-        this.stateFinalizerLogicMap = stateFinalizerLogicMap;
-    }
-
-    /**
-     * Gets the default task that will execute in a state if Task Selection Logic is not specified.
-     *
-     * @return the default task that will execute in a state if Task Selection Logic is not specified
-     */
-    public AxArtifactKey getDefaultTask() {
-        return defaultTask;
-    }
-
-    /**
-     * Sets the default task that will execute in a state if Task Selection Logic is not specified.
-     *
-     * @param defaultTask the default task that will execute in a state if Task Selection Logic is not specified
-     */
-    public void setDefaultTask(final AxArtifactKey defaultTask) {
-        Assertions.argumentNotNull(defaultTask, "defaultTask may not be null");
-        this.defaultTask = defaultTask;
-    }
-
-    /**
-     * Gets the task reference map that defines the tasks for the state and how the task outputs are handled.
-     *
-     * @return the task reference map that defines the tasks for the state and how the task outputs are handled
-     */
-    public Map<AxArtifactKey, AxStateTaskReference> getTaskReferences() {
-        return taskReferenceMap;
-    }
-
-    /**
-     * Sets the task reference map that defines the tasks for the state and how the task outputs are handled.
-     *
-     * @param taskReferences the task reference map that defines the tasks for the state and how the task outputs are
-     *        handled
-     */
-    public void setTaskReferences(final Map<AxArtifactKey, AxStateTaskReference> taskReferences) {
-        Assertions.argumentNotNull(taskReferences, "taskReferenceMap may not be null");
-        this.taskReferenceMap = taskReferences;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxValidationResult validate(final AxValidationResult resultIn) {
-        AxValidationResult result = resultIn;
-
-        if (key.equals(AxReferenceKey.getNullKey())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "key is a null key"));
-        }
-
-        result = key.validate(result);
-
-        if (trigger.equals(AxArtifactKey.getNullKey())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "trigger is a null key: " + trigger));
-        }
-        result = trigger.validate(result);
-
-        if (stateOutputs.size() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "stateOutputs may not be empty"));
-        } else {
-            validateStateOutputs(result);
-        }
-
-        validateContextAlbumReferences(result);
-        result = validateTaskSelectionLogic(result);
-        validateStateFinalizerLogics(result);
-
-        if (defaultTask.equals(AxArtifactKey.getNullKey())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "default task has a null key: " + defaultTask));
-        }
-        result = defaultTask.validate(result);
-
-        if (taskReferenceMap.size() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "taskReferenceMap may not be empty"));
-        } else {
-            validateStateTaskReferences(result);
-        }
-
-        return result;
-    }
-
-    /**
-     * Validate the state outputs of the state.
-     *
-     * @param result the validation result to append to
-     */
-    private void validateStateOutputs(AxValidationResult result) {
-        final Set<String> nextStateNameSet = new TreeSet<>();
-        for (final Entry<String, AxStateOutput> stateOutputEntry : stateOutputs.entrySet()) {
-            if (stateOutputEntry.getValue() == null) {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                "null state output value found on state output " + stateOutputEntry.getKey()));
-            } else {
-                if (!stateOutputEntry.getValue().getKey().getParentReferenceKey().equals(key)) {
-                    result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                    "parent key on state output " + stateOutputEntry.getKey()
-                                                    + DOES_NOT_EQUAL_STATE_KEY));
-                }
-
-                if (stateOutputEntry.getValue().getNextState().getLocalName().equals(key.getLocalName())) {
-                    result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                    "state output next state "
-                                                    + stateOutputEntry.getValue().getNextState().getLocalName()
-                                                    + " may not be this state"));
-
-                }
-
-                if (nextStateNameSet.contains(stateOutputEntry.getValue().getNextState().getLocalName())) {
-                    result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                    "duplicate state output next state name "
-                                                    + stateOutputEntry.getValue().getNextState().getLocalName()
-                                                    + " found"));
-                } else {
-                    nextStateNameSet.add(stateOutputEntry.getValue().getNextState().getLocalName());
-                }
-                result = stateOutputEntry.getValue().validate(result);
-            }
-        }
-    }
-
-    /**
-     * Validate the context album references of the state.
-     *
-     * @param result the validation result to append to
-     */
-    private void validateContextAlbumReferences(AxValidationResult result) {
-        for (final AxArtifactKey contextAlbumReference : contextAlbumReferenceSet) {
-            if (contextAlbumReference.equals(AxArtifactKey.getNullKey())) {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                "key on context album reference entry " + contextAlbumReference.getKey()
-                                                + " may not be the null key"));
-            }
-
-            result = contextAlbumReference.validate(result);
-        }
-    }
-
-    /**
-     * Validate the task selection logic of the state.
-     *
-     * @param result the validation result to append to
-     * @return the result of the validation
-     */
-    private AxValidationResult validateTaskSelectionLogic(AxValidationResult result) {
-        if (!taskSelectionLogic.getKey().equals(AxReferenceKey.getNullKey())) {
-            if (!taskSelectionLogic.getKey().getParentReferenceKey().equals(key)) {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                "taskSelectionLogic key " + taskSelectionLogic.getKey().getId()
-                                                + DOES_NOT_EQUAL_STATE_KEY));
-            }
-            result = taskSelectionLogic.validate(result);
-        }
-
-        return result;
-    }
-
-    /**
-     * Validate all the state finalizer logic of the state.
-     *
-     * @param result the validation result to append to
-     */
-    private void validateStateFinalizerLogics(AxValidationResult result) {
-        for (final Entry<String, AxStateFinalizerLogic> stateFinalizerLogicEntry : stateFinalizerLogicMap.entrySet()) {
-            if (stateFinalizerLogicEntry.getValue() == null) {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                "null state finalizer logic value found on state finalizer entry "
-                                                + stateFinalizerLogicEntry.getKey()));
-            } else {
-                if (!stateFinalizerLogicEntry.getValue().getKey().getParentReferenceKey().equals(key)) {
-                    result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                    "stateFinalizerLogic parent key "
-                                                    + stateFinalizerLogicEntry.getValue().getKey().getId()
-                                                    + DOES_NOT_EQUAL_STATE_KEY));
-                }
-
-                result = stateFinalizerLogicEntry.getValue().validate(result);
-            }
-        }
-    }
-
-    /**
-     * Validate the tasks used the state.
-     *
-     * @param result the validation result to append to
-     */
-    private void validateStateTaskReferences(AxValidationResult result) {
-        final Set<String> usedStateOutputNameSet = new TreeSet<>();
-        final Set<String> usedStateFinalizerLogicNameSet = new TreeSet<>();
-
-        for (final Entry<AxArtifactKey, AxStateTaskReference> taskRefEntry : taskReferenceMap.entrySet()) {
-            if (taskRefEntry.getKey().equals(AxArtifactKey.getNullKey())) {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                "task has a null key: " + taskRefEntry.getKey()));
-            }
-            result = taskRefEntry.getKey().validate(result);
-
-            if (taskRefEntry.getValue() == null) {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                "null task reference value found on task reference " + taskRefEntry.getKey()));
-            } else {
-                result = validateStateTaskReference(taskRefEntry.getKey(), taskRefEntry.getValue(),
-                                usedStateOutputNameSet, usedStateFinalizerLogicNameSet, result);
-            }
-        }
-
-        final Set<String> unUsedStateOutputNameSet = new TreeSet<>(stateOutputs.keySet());
-        unUsedStateOutputNameSet.removeAll(usedStateOutputNameSet);
-        for (final String unUsedStateOutputName : unUsedStateOutputNameSet) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.OBSERVATION,
-                            "state output " + unUsedStateOutputName + " is not used directly by any task"));
-        }
-
-        final Set<String> usnUedStateFinalizerLogicNameSet = new TreeSet<>(stateFinalizerLogicMap.keySet());
-        usnUedStateFinalizerLogicNameSet.removeAll(usedStateFinalizerLogicNameSet);
-        for (final String unusedStateFinalizerLogicName : usnUedStateFinalizerLogicNameSet) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.OBSERVATION,
-                            "state finalizer logic " + unusedStateFinalizerLogicName + " is not used by any task"));
-        }
-
-        if (!taskReferenceMap.containsKey(defaultTask)) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "defaultTask " + defaultTask + " not found in taskReferenceMap"));
-        }
-    }
-
-    /**
-     * Validate the references of a task used in a state.
-     *
-     * @param taskKey The key of the task
-     * @param taskReference the task reference of the task
-     * @param stateOutputNameSet State outputs that have been used so far, will be appended for this task reference
-     * @param stateFinalizerLogicNameSet State finalizers that have been used so far, may be appended if this task
-     *        reference uses a finalzier
-     * @param result the validation result to append to
-     * @return the result of the validation
-     */
-    private AxValidationResult validateStateTaskReference(final AxArtifactKey taskKey,
-                    final AxStateTaskReference taskReference, Set<String> stateOutputNameSet,
-                    Set<String> stateFinalizerLogicNameSet, AxValidationResult result) {
-        if (!taskReference.getKey().getParentReferenceKey().equals(key)) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "stateTaskReference parent key " + taskReference.getKey().getId()
-                                            + DOES_NOT_EQUAL_STATE_KEY));
-        }
-
-        if (taskReference.getStateTaskOutputType().equals(AxStateTaskOutputType.DIRECT)) {
-            if (stateOutputs.containsKey(taskReference.getOutput().getLocalName())) {
-                stateOutputNameSet.add(taskReference.getOutput().getLocalName());
-            } else {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                "state output for task " + taskKey + " not found in stateOutputs"));
-            }
-        } else if (taskReference.getStateTaskOutputType().equals(AxStateTaskOutputType.LOGIC)) {
-            if (stateFinalizerLogicMap.containsKey(taskReference.getOutput().getLocalName())) {
-                stateFinalizerLogicNameSet.add(taskReference.getOutput().getLocalName());
-            } else {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                "state finalizer logic for task " + taskKey + " not found in stateFinalizerLogicMap"));
-            }
-        } else {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "stateTaskReference task output type " + taskReference.getStateTaskOutputType()
-                                            + " is invalid"));
-        }
-
-        return taskReference.validate(result);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        key.clean();
-        trigger.clean();
-        for (final AxStateOutput stateOutput : stateOutputs.values()) {
-            stateOutput.clean();
-        }
-        for (final AxArtifactKey contextAlbumReference : contextAlbumReferenceSet) {
-            contextAlbumReference.clean();
-        }
-        taskSelectionLogic.clean();
-        for (final AxStateFinalizerLogic stateFinalizerLogic : stateFinalizerLogicMap.values()) {
-            stateFinalizerLogic.clean();
-        }
-        defaultTask.clean();
-        for (final AxStateTaskReference taskReference : taskReferenceMap.values()) {
-            taskReference.clean();
-        }
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-        builder.append(this.getClass().getSimpleName());
-        builder.append(":(");
-        builder.append("stateKey=");
-        builder.append(key);
-        builder.append(",trigger=");
-        builder.append(trigger);
-        builder.append(",stateOutputs=");
-        builder.append(stateOutputs);
-        builder.append(",contextAlbumReferenceSet=");
-        builder.append(contextAlbumReferenceSet);
-        builder.append(",taskSelectionLogic=");
-        builder.append(taskSelectionLogic);
-        builder.append(",stateFinalizerLogicSet=");
-        builder.append(stateFinalizerLogicMap);
-        builder.append(",defaultTask=");
-        builder.append(defaultTask);
-        builder.append(",taskReferenceMap=");
-        builder.append(taskReferenceMap);
-        builder.append(")");
-        return builder.toString();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxConcept copyTo(final AxConcept targetObject) {
-        Assertions.argumentNotNull(targetObject, "target may not be null");
-
-        final Object copyObject = targetObject;
-        Assertions.instanceOf(copyObject, AxState.class);
-
-        final AxState copy = ((AxState) copyObject);
-        copy.setKey(new AxReferenceKey(key));
-        copy.setTrigger(new AxArtifactKey(trigger));
-
-        final Map<String, AxStateOutput> newStateOutputs = new TreeMap<>();
-        for (final Entry<String, AxStateOutput> stateOutputEntry : stateOutputs.entrySet()) {
-            newStateOutputs.put(stateOutputEntry.getKey(), new AxStateOutput(stateOutputEntry.getValue()));
-        }
-        copy.setStateOutputs(newStateOutputs);
-
-        final Set<AxArtifactKey> newContextUsage = new TreeSet<>();
-        for (final AxArtifactKey contextAlbumReferenceItem : contextAlbumReferenceSet) {
-            newContextUsage.add(new AxArtifactKey(contextAlbumReferenceItem));
-        }
-        copy.setContextAlbumReferences(newContextUsage);
-
-        copy.setTaskSelectionLogic(new AxTaskSelectionLogic(taskSelectionLogic));
-
-        final Map<String, AxStateFinalizerLogic> newStateFinalizerLogicMap = new TreeMap<>();
-        for (final Entry<String, AxStateFinalizerLogic> stateFinalizerLogicEntry : stateFinalizerLogicMap.entrySet()) {
-            newStateFinalizerLogicMap.put(stateFinalizerLogicEntry.getKey(),
-                            new AxStateFinalizerLogic(stateFinalizerLogicEntry.getValue()));
-        }
-        copy.setStateFinalizerLogicMap(newStateFinalizerLogicMap);
-
-        copy.setDefaultTask(new AxArtifactKey(defaultTask));
-
-        final Map<AxArtifactKey, AxStateTaskReference> newTaskReferenceMap = new TreeMap<>();
-        for (final Entry<AxArtifactKey, AxStateTaskReference> taskReferenceEntry : taskReferenceMap.entrySet()) {
-            newTaskReferenceMap.put(new AxArtifactKey(taskReferenceEntry.getKey()),
-                            new AxStateTaskReference(taskReferenceEntry.getValue()));
-        }
-        copy.setTaskReferences(newTaskReferenceMap);
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + trigger.hashCode();
-        result = prime * result + stateOutputs.hashCode();
-        result = prime * result + contextAlbumReferenceSet.hashCode();
-        result = prime * result + taskSelectionLogic.hashCode();
-        result = prime * result + stateFinalizerLogicMap.hashCode();
-        result = prime * result + defaultTask.hashCode();
-        result = prime * result + taskReferenceMap.hashCode();
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public boolean equals(final Object obj) {
-        if (obj == null) {
-            return false;
-        }
-        if (this == obj) {
-            return true;
-        }
-
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-
-        final AxState other = (AxState) obj;
-        if (!key.equals(other.key)) {
-            return false;
-        }
-        if (!trigger.equals(other.trigger)) {
-            return false;
-        }
-        if (!stateOutputs.equals(other.stateOutputs)) {
-            return false;
-        }
-        if (!contextAlbumReferenceSet.equals(other.contextAlbumReferenceSet)) {
-            return false;
-        }
-        if (!taskSelectionLogic.equals(other.taskSelectionLogic)) {
-            return false;
-        }
-        if (!stateFinalizerLogicMap.equals(other.stateFinalizerLogicMap)) {
-            return false;
-        }
-        if (!defaultTask.equals(other.defaultTask)) {
-            return false;
-        }
-        return taskReferenceMap.equals(other.taskReferenceMap);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxConcept otherObj) {
-        if (otherObj == null) {
-            return -1;
-        }
-        if (this == otherObj) {
-            return 0;
-        }
-        if (getClass() != otherObj.getClass()) {
-            return this.hashCode() - otherObj.hashCode();
-        }
-
-        return compareObjectFields((AxState) otherObj);
-    }
-
-    /**
-     * Compare the object fields on this state to another state.
-     *
-     * @param other the other state to compare with
-     * @return the result of the comparison
-     */
-    private int compareObjectFields(final AxState other) {
-        if (!key.equals(other.key)) {
-            return key.compareTo(other.key);
-        }
-        if (!trigger.equals(other.trigger)) {
-            return trigger.compareTo(other.trigger);
-        }
-        if (!stateOutputs.equals(other.stateOutputs)) {
-            return stateOutputs.hashCode() - other.stateOutputs.hashCode();
-        }
-        if (!contextAlbumReferenceSet.equals(other.contextAlbumReferenceSet)) {
-            return (contextAlbumReferenceSet.hashCode() - other.contextAlbumReferenceSet.hashCode());
-        }
-        if (!taskSelectionLogic.equals(other.taskSelectionLogic)) {
-            return taskSelectionLogic.compareTo(other.taskSelectionLogic);
-        }
-        if (!stateFinalizerLogicMap.equals(other.stateFinalizerLogicMap)) {
-            return stateFinalizerLogicMap.hashCode() - other.stateFinalizerLogicMap.hashCode();
-        }
-        if (!defaultTask.equals(other.defaultTask)) {
-            return defaultTask.compareTo(other.defaultTask);
-        }
-        if (!taskReferenceMap.equals(other.taskReferenceMap)) {
-            return (taskReferenceMap.hashCode() - other.taskReferenceMap.hashCode());
-        }
-
-        return 0;
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateFinalizerLogic.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateFinalizerLogic.java
deleted file mode 100644
index 31ffedea8..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateFinalizerLogic.java
+++ /dev/null
@@ -1,121 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2022 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-
-/**
- * This class holds State Finalizer Logic for {@link AxState} states in Apex. It is a specialization
- * of the {@link AxLogic} class, so that State Finalizer Logic in Apex states can be strongly typed.
- *
- * <p>State Finalizer Logic is used to select the output {@link AxStateOutput} that a state will use.
- * The logic uses fields emitted by the executed {@link AxTask} task and information from the
- * context albums available on a state to decide what state output {@link AxStateOutput} to select
- * in a given context. State Finalizer Logic must marshal the output fields from the task onto the
- * output event in whatever manner is appropriate for the domain being handled.
- *
- * <p>Validation uses standard Apex Logic validation, see validation in {@link AxLogic}.
- */
-public class AxStateFinalizerLogic extends AxLogic {
-    private static final long serialVersionUID = 2090324845463750391L;
-
-    /**
-     * The Default Constructor creates a logic instance with a null key, undefined logic flavour and
-     * a null logic string.
-     */
-    public AxStateFinalizerLogic() {
-        super();
-    }
-
-    /**
-     * The Key Constructor creates a logic instance with the given reference key, undefined logic
-     * flavour and a null logic string.
-     *
-     * @param key the reference key of the logic
-     */
-    public AxStateFinalizerLogic(final AxReferenceKey key) {
-        super(key, LOGIC_FLAVOUR_UNDEFINED, "");
-    }
-
-    /**
-     * This Constructor creates a logic instance with a reference key constructed from the parents
-     * key and the logic local name and all of its fields defined.
-     *
-     * @param parentKey the reference key of the parent of this logic
-     * @param logicName the logic name, held as the local name of the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logic the actual logic as a string
-     */
-    public AxStateFinalizerLogic(final AxReferenceKey parentKey, final String logicName, final String logicFlavour,
-            final String logic) {
-        super(parentKey, logicName, logicFlavour, logic);
-    }
-
-    /**
-     * This Constructor creates a logic instance with the given reference key and all of its fields
-     * defined.
-     *
-     * @param key the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logic the actual logic as a string
-     */
-    public AxStateFinalizerLogic(final AxReferenceKey key, final String logicFlavour, final String logic) {
-        super(key, logicFlavour, logic);
-    }
-
-    /**
-     * This Constructor creates a logic instance by cloning the fields from another logic instance
-     * into this logic instance.
-     *
-     * @param logic the logic instance to clone from
-     */
-    public AxStateFinalizerLogic(final AxLogic logic) {
-        super(new AxReferenceKey(logic.getKey()), logic.getLogicFlavour(), logic.getLogic());
-    }
-
-    /**
-     * This Constructor creates a logic instance with a reference key constructed from the parents
-     * key and the logic local name, the given logic flavour, with the logic being provided by the
-     * given logic reader instance.
-     *
-     * @param parentKey the reference key of the parent of this logic
-     * @param logicName the logic name, held as the local name of the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logicReader the logic reader to use to read the logic for this logic instance
-     */
-    public AxStateFinalizerLogic(final AxReferenceKey parentKey, final String logicName, final String logicFlavour,
-            final AxLogicReader logicReader) {
-        super(new AxReferenceKey(parentKey, logicName), logicFlavour, logicReader);
-    }
-
-    /**
-     * This Constructor creates a logic instance with the given reference key and logic flavour, the
-     * logic is provided by the given logic reader instance.
-     *
-     * @param key the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logicReader the logic reader to use to read the logic for this logic instance
-     */
-    public AxStateFinalizerLogic(final AxReferenceKey key, final String logicFlavour, final AxLogicReader logicReader) {
-        super(key, logicFlavour, logicReader);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateOutput.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateOutput.java
deleted file mode 100644
index 7d4695290..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateOutput.java
+++ /dev/null
@@ -1,291 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019,2022 Nordix Foundation.
- *  Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
- *  Modifications Copyright (C) 2021 Bell Canada. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import com.google.gson.annotations.SerializedName;
-import java.util.List;
-import java.util.Set;
-import lombok.Getter;
-import lombok.NonNull;
-import lombok.Setter;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKeyUse;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * This class defines a single output that a state can have. A state can have many outputs with each
- * output defined as an instance of this class. Each state output defines the output event that will
- * be emitted when this output is selected and optionally the next state that is executed when this
- * state output is selected. If no next state is defined (the next state is a null
- * {@link AxReferenceKey} key), then this state output outputs its event to an external system and
- * is an output state for the full policy.
- *
- * <p>During validation of a state output, the validation checks listed below are executed:
- * <ol>
- * <li>The state output key must not be a null key and must be valid, see validation in
- * {@link AxReferenceKey}
- * <li>The outgoing event key must not be a null key and must be valid, see validation in
- * {@link AxArtifactKey}
- * <li>The next state key must be valid, see validation in {@link AxReferenceKey}
- * </ol>
- */
-@Getter
-@Setter
-public class AxStateOutput extends AxConcept {
-    private static final long serialVersionUID = 8041771382337655535L;
-
-    @NonNull
-    private AxReferenceKey key;
-
-    @NonNull
-    private AxArtifactKey outgoingEvent;
-
-    @SerializedName("outgoingEventReference")
-    private Set<AxArtifactKey> outgoingEventSet;
-
-    @NonNull
-    private AxReferenceKey nextState;
-    // @formatter:on
-
-    /**
-     * The Default Constructor creates a state output instance with a null reference key, outgoing
-     * event key and next state reference key.
-     */
-    public AxStateOutput() {
-        this(new AxReferenceKey());
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxStateOutput(final AxStateOutput copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The Keyed Constructor creates a state output instance with the given reference key, outgoing
-     * event key and next state reference key.
-     *
-     * @param key the reference key for the state output
-     */
-    public AxStateOutput(final AxReferenceKey key) {
-        this(key, // Key
-                AxArtifactKey.getNullKey(), // Outgoing Event
-                AxReferenceKey.getNullKey() // Next State
-        );
-    }
-
-    /**
-     * This Constructor creates a state output with a reference key composed of the given parent key
-     * and with a local name composed from the parent key local name concatenated with the next
-     * state's local name. The next state and outgoing event of the state output are set as
-     * specified.
-     *
-     * @param parentKey the parent key of the state output
-     * @param nextState the next state to which execution will pass on use of this state output
-     * @param outgoingEvent the outgoing event emitted on use of this state output
-     */
-    public AxStateOutput(final AxReferenceKey parentKey, final AxReferenceKey nextState,
-            final AxArtifactKey outgoingEvent) {
-        this(new AxReferenceKey(parentKey, parentKey.getLocalName() + '_' + nextState.getLocalName()), outgoingEvent,
-                nextState);
-    }
-
-    /**
-     * This Constructor creates a state output with the specified reference key. The next state and
-     * outgoing event of the state output are set as specified.
-     *
-     * @param key the key
-     * @param nextState the next state to which execution will pass on use of this state output
-     * @param outgoingEvent the outgoing event emitted on use of this state output
-     */
-    public AxStateOutput(final AxReferenceKey key, final AxArtifactKey outgoingEvent, final AxReferenceKey nextState) {
-        super();
-        Assertions.argumentNotNull(key, "key may not be null");
-        Assertions.argumentNotNull(outgoingEvent, "outgoingEvent may not be null");
-        Assertions.argumentNotNull(nextState, "nextState may not be null");
-
-        this.key = key;
-        this.outgoingEvent = outgoingEvent;
-        this.nextState = nextState;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = key.getKeys();
-        keyList.add(new AxKeyUse(outgoingEvent));
-
-        if (!nextState.equals(AxReferenceKey.getNullKey())) {
-            keyList.add(new AxKeyUse(nextState));
-        }
-
-        return keyList;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxValidationResult validate(final AxValidationResult resultIn) {
-        AxValidationResult result = resultIn;
-
-        if (key.equals(AxReferenceKey.getNullKey())) {
-            result.addValidationMessage(
-                    new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID, "key is a null key"));
-        }
-
-        result = key.validate(result);
-
-        if (outgoingEvent.equals(AxArtifactKey.getNullKey())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                    "outgoingEvent reference is a null key, an outgoing event must be specified"));
-        }
-        result = outgoingEvent.validate(result);
-
-        // Note: Null keys are allowed on nextState as there may not be a next state
-        result = nextState.validate(result);
-
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        key.clean();
-        outgoingEvent.clean();
-        nextState.clean();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-        builder.append(this.getClass().getSimpleName());
-        builder.append(":(");
-        builder.append("stateKey=");
-        builder.append(key);
-        builder.append(",outgoingEvent=");
-        builder.append(outgoingEvent);
-        builder.append(",nextState=");
-        builder.append(nextState);
-        builder.append(")");
-        return builder.toString();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxConcept copyTo(final AxConcept targetObject) {
-        Assertions.argumentNotNull(targetObject, "target may not be null");
-
-        final Object copyObject = targetObject;
-        Assertions.instanceOf(copyObject, AxStateOutput.class);
-
-        final AxStateOutput copy = ((AxStateOutput) copyObject);
-        copy.setKey(new AxReferenceKey(key));
-        copy.setOutgoingEvent(new AxArtifactKey(outgoingEvent));
-        copy.setNextState(nextState);
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + outgoingEvent.hashCode();
-        result = prime * result + nextState.hashCode();
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public boolean equals(final Object obj) {
-        if (obj == null) {
-            return false;
-        }
-        if (this == obj) {
-            return true;
-        }
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-
-        final AxStateOutput other = (AxStateOutput) obj;
-        if (!key.equals(other.key)) {
-            return false;
-        }
-        if (!outgoingEvent.equals(other.outgoingEvent)) {
-            return false;
-        }
-        return nextState.equals(other.nextState);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxConcept otherObj) {
-        if (otherObj == null) {
-            return -1;
-        }
-        if (this == otherObj) {
-            return 0;
-        }
-        if (getClass() != otherObj.getClass()) {
-            return this.hashCode() - otherObj.hashCode();
-        }
-
-        final AxStateOutput other = (AxStateOutput) otherObj;
-        if (!key.equals(other.key)) {
-            return key.compareTo(other.key);
-        }
-        if (!outgoingEvent.equals(other.outgoingEvent)) {
-            return outgoingEvent.compareTo(other.outgoingEvent);
-        }
-        return nextState.compareTo(other.nextState);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateParamsBuilder.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateParamsBuilder.java
deleted file mode 100644
index 6ef6e0b0a..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateParamsBuilder.java
+++ /dev/null
@@ -1,162 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2018 Samsung Electronics Co., Ltd. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import java.util.Map;
-import java.util.Set;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-
-public class AxStateParamsBuilder {
-    private AxReferenceKey key;
-    private AxArtifactKey trigger;
-    private Map<String, AxStateOutput> stateOutputs;
-    private Set<AxArtifactKey> contextAlbumReferenceSet;
-    private AxTaskSelectionLogic taskSelectionLogic;
-    private Map<String, AxStateFinalizerLogic> stateFinalizerLogicMap;
-    private AxArtifactKey defaultTask;
-    private Map<AxArtifactKey, AxStateTaskReference> taskReferenceMap;
-
-    public AxReferenceKey getKey() {
-        return key;
-    }
-
-    public AxArtifactKey getTrigger() {
-        return trigger;
-    }
-
-    public Map<String, AxStateOutput> getStateOutputs() {
-        return stateOutputs;
-    }
-
-    public Set<AxArtifactKey> getContextAlbumReferenceSet() {
-        return contextAlbumReferenceSet;
-    }
-
-    public AxTaskSelectionLogic getTaskSelectionLogic() {
-        return taskSelectionLogic;
-    }
-
-    public Map<String, AxStateFinalizerLogic> getStateFinalizerLogicMap() {
-        return stateFinalizerLogicMap;
-    }
-
-    public AxArtifactKey getDefaultTask() {
-        return defaultTask;
-    }
-
-    public Map<AxArtifactKey, AxStateTaskReference> getTaskReferenceMap() {
-        return taskReferenceMap;
-    }
-
-    /**
-     * Setter method.
-     *
-     * @param key the reference key of the state
-     * @return builder object
-     */
-    public AxStateParamsBuilder key(AxReferenceKey key) {
-        this.key = key;
-        return this;
-    }
-
-    /**
-     * Setter method.
-     *
-     * @param trigger the event that triggers the state
-     * @return builder object
-     */
-    public AxStateParamsBuilder trigger(AxArtifactKey trigger) {
-        this.trigger = trigger;
-        return this;
-    }
-
-    /**
-     * Setter method.
-     *
-     * @param stateOutputs the possible state outputs for the state
-     * @return builder object
-     */
-    public AxStateParamsBuilder stateOutputs(Map<String, AxStateOutput> stateOutputs) {
-        this.stateOutputs = stateOutputs;
-        return this;
-    }
-
-    /**
-     * Setter method.
-     *
-     * @param contextAlbumReferenceSet the context album reference set defines the context that may
-     *                                 be used by Task Selection Logic and State Finalizer Logic in the state
-     * @return builder object
-     */
-    public AxStateParamsBuilder contextAlbumReferenceSet(Set<AxArtifactKey> contextAlbumReferenceSet) {
-        this.contextAlbumReferenceSet = contextAlbumReferenceSet;
-        return this;
-    }
-
-    /**
-     * Setter method.
-     *
-     * @param taskSelectionLogic the task selection logic that selects the task a state executes in
-     *                           an execution cycle
-     * @return builder object
-     */
-    public AxStateParamsBuilder taskSelectionLogic(AxTaskSelectionLogic taskSelectionLogic) {
-        this.taskSelectionLogic = taskSelectionLogic;
-        return this;
-    }
-
-    /**
-     * Setter method.
-     *
-     * @param stateFinalizerLogicMap the state finalizer logic instances that selects the state
-     *                               output to use after a task executes in a state execution cycle
-     * @return builder object
-     */
-    public AxStateParamsBuilder stateFinalizerLogicMap(
-            Map<String, AxStateFinalizerLogic> stateFinalizerLogicMap) {
-        this.stateFinalizerLogicMap = stateFinalizerLogicMap;
-        return this;
-    }
-
-    /**
-     * Setter method.
-     *
-     * @param defaultTask the default task that will execute in a state if Task Selection Logic is
-     *                    not specified
-     * @return builder object
-     */
-    public AxStateParamsBuilder defaultTask(AxArtifactKey defaultTask) {
-        this.defaultTask = defaultTask;
-        return this;
-    }
-
-    /**
-     * Setter method.
-     *
-     * @param taskReferenceMap the task reference map that defines the tasks for the state and how
-     * @return builder object
-     */
-    public AxStateParamsBuilder taskReferenceMap(Map<AxArtifactKey, AxStateTaskReference> taskReferenceMap) {
-        this.taskReferenceMap = taskReferenceMap;
-        return this;
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateTaskOutputType.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateTaskOutputType.java
deleted file mode 100644
index 171747c0c..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateTaskOutputType.java
+++ /dev/null
@@ -1,42 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2022 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-/**
- * This enumeration defines the type of state output selection that is defined for a task in a
- * state. The {@link AxStateTaskReference} instance for each task uses this enumeration to decide
- * what type of output selection to use when a task has completed execution.
- */
-public enum AxStateTaskOutputType {
-    /** The state output selection for the task has not been defined. */
-    UNDEFINED,
-    /**
-     * Direct state output selection has been selected, the task will select a {@link AxStateOutput}
-     * directly.
-     */
-    DIRECT,
-    /**
-     * Logic state output selection has been selected, the task will select a {@link AxStateOutput}
-     * using logic defined in a {@link AxStateFinalizerLogic} instance.
-     */
-    LOGIC
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateTaskReference.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateTaskReference.java
deleted file mode 100644
index 748eca92d..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateTaskReference.java
+++ /dev/null
@@ -1,339 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019,2022 Nordix Foundation.
- *  Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import java.util.List;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKeyUse;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * This class defines the type of output handling that will be used when a task in a state completes
- * execution. Each task {@link AxTask} in a state {@link AxState} must select a state output
- * {@link AxStateOutput} in order to pass its fields to an output event. Therefore, each task has an
- * associated instance of this class that defines how the state output of the state is selected and
- * how the output fields of the task are marshaled onto the fields of the output event. A
- * {@link AxStateTaskReference} instance defines the task output handling as either
- * {@link AxStateTaskOutputType#DIRECT} or {@link AxStateTaskOutputType#LOGIC}. In the case of
- * {@link AxStateTaskOutputType#DIRECT} output selection, the output reference key held in this
- * {@link AxStateTaskReference} instance to an instance of an {@link AxStateOutput} class. In the
- * case of {@link AxStateTaskOutputType#LOGIC} output selection, the output reference key held in
- * this {@link AxStateTaskReference} instance to an instance of an {@link AxStateFinalizerLogic}
- * class. See the explanation in the {@link AxState} class for a full description of this handling.
- *
- * <p>During validation of a state task reference, the validation checks listed below are executed:
- * <ol>
- * <li>The state task reference key must not be a null key and must be valid, see validation in
- * {@link AxReferenceKey}
- * <li>The output type must be defined, that is not equal to {@link AxStateTaskOutputType#UNDEFINED}
- * <li>The output key must not be a null key and must be valid, see validation in
- * {@link AxReferenceKey}
- * </ol>
- */
-public class AxStateTaskReference extends AxConcept {
-    private static final long serialVersionUID = 8041771382337655535L;
-
-    private AxReferenceKey key;
-    private AxStateTaskOutputType outputType;
-    private AxReferenceKey output;
-
-    /**
-     * The Default Constructor creates a state task reference with a null reference key, an
-     * undefined output type and a null output reference key.
-     */
-    public AxStateTaskReference() {
-        this(new AxReferenceKey());
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxStateTaskReference(final AxStateTaskReference copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The Keyed Constructor creates a state task reference with the given reference key, an
-     * undefined output type and a null output reference key.
-     *
-     * @param key the key
-     */
-    public AxStateTaskReference(final AxReferenceKey key) {
-        this(key, // Key
-                AxStateTaskOutputType.UNDEFINED, // Output type
-                AxReferenceKey.getNullKey()); // Output
-    }
-
-    /**
-     * This Constructor creates a state task reference instance with a reference key composed from
-     * the given parent key with a local name composed by concatenating the name of the task key
-     * with the local name of the output. The output type and output are set to the given values.
-     *
-     * @param parentKey the parent key to use for the key of the state task reference
-     * @param taskKey the task key to use for the first part of the state task reference local name
-     * @param outputType the type of output to perform when this state task reference instance is
-     *        used
-     * @param output the output to perform when this state task reference instance is used
-     */
-    public AxStateTaskReference(final AxReferenceKey parentKey, final AxArtifactKey taskKey,
-            final AxStateTaskOutputType outputType, final AxReferenceKey output) {
-        this(new AxReferenceKey(parentKey, taskKey.getName() + '_' + outputType.name() + '_' + output.getLocalName()),
-                outputType, output);
-    }
-
-    /**
-     * This Constructor creates a state task reference instance with the given reference key and all
-     * its fields defined.
-     *
-     * @param key the key of the state task reference
-     * @param outputType the type of output to perform when this state task reference instance is
-     *        used
-     * @param output the output to perform when this state task reference instance is used
-     */
-    public AxStateTaskReference(final AxReferenceKey key, final AxStateTaskOutputType outputType,
-            final AxReferenceKey output) {
-        super();
-        Assertions.argumentNotNull(key, "key may not be null");
-        Assertions.argumentNotNull(outputType, "outputType may not be null");
-        Assertions.argumentNotNull(output, "output may not be null");
-
-        this.key = key;
-        this.outputType = outputType;
-        this.output = output;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxReferenceKey getKey() {
-        return key;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = key.getKeys();
-
-        if (!output.equals(AxReferenceKey.getNullKey())) {
-            keyList.add(new AxKeyUse(output));
-        }
-
-        return keyList;
-    }
-
-    /**
-     * Sets the key of the state task reference.
-     *
-     * @param key the key of the state task reference
-     */
-    public void setKey(final AxReferenceKey key) {
-        Assertions.argumentNotNull(key, "key may not be null");
-        this.key = key;
-    }
-
-    /**
-     * Gets the type of output to perform when this state task reference instance is used.
-     *
-     * @return the the type of output to perform when this state task reference instance is used
-     */
-    public AxStateTaskOutputType getStateTaskOutputType() {
-        return outputType;
-    }
-
-    /**
-     * Sets the type of output to perform when this state task reference instance is used.
-     *
-     * @param stateTaskOutputType the type of output to perform when this state task reference
-     *        instance is used
-     */
-    public void setStateTaskOutputType(final AxStateTaskOutputType stateTaskOutputType) {
-        Assertions.argumentNotNull(stateTaskOutputType, "outputType may not be null");
-        this.outputType = stateTaskOutputType;
-    }
-
-    /**
-     * Gets the output to perform when this state task reference instance is used.
-     *
-     * @return the output to perform when this state task reference instance is used
-     */
-    public AxReferenceKey getOutput() {
-        return output;
-    }
-
-    /**
-     * Sets the output to perform when this state task reference instance is used.
-     *
-     * @param output the output to perform when this state task reference instance is used
-     */
-    public void setOutput(final AxReferenceKey output) {
-        Assertions.argumentNotNull(output, "output may not be null");
-        this.output = output;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxValidationResult validate(final AxValidationResult resultIn) {
-        AxValidationResult result = resultIn;
-
-        if (key.equals(AxReferenceKey.getNullKey())) {
-            result.addValidationMessage(
-                    new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID, "key is a null key"));
-        }
-
-        result = key.validate(result);
-
-        if (outputType == AxStateTaskOutputType.UNDEFINED) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                    "outputType may not be UNDEFINED"));
-        }
-
-        if (output.equals(AxReferenceKey.getNullKey())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                    "output key " + output.getId() + " is a null key"));
-        }
-        result = output.validate(result);
-
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        key.clean();
-        output.clean();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-        builder.append(this.getClass().getSimpleName());
-        builder.append(":(");
-        builder.append("stateKey=");
-        builder.append(key);
-        builder.append(",outputType=");
-        builder.append(outputType);
-        builder.append(",output=");
-        builder.append(output);
-        builder.append(")");
-        return builder.toString();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxConcept copyTo(final AxConcept targetObject) {
-        Assertions.argumentNotNull(targetObject, "target may not be null");
-
-        final Object copyObject = targetObject;
-        Assertions.instanceOf(copyObject, AxStateTaskReference.class);
-
-        final AxStateTaskReference copy = ((AxStateTaskReference) copyObject);
-        copy.setKey(new AxReferenceKey(key));
-        copy.setStateTaskOutputType(AxStateTaskOutputType.valueOf(outputType.name()));
-        copy.setOutput(output);
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + outputType.hashCode();
-        result = prime * result + output.hashCode();
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public boolean equals(final Object obj) {
-        if (obj == null) {
-            return false;
-        }
-        if (this == obj) {
-            return true;
-        }
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-
-        final AxStateTaskReference other = (AxStateTaskReference) obj;
-        if (!key.equals(other.key)) {
-            return false;
-        }
-        if (outputType != other.outputType) {
-            return false;
-        }
-        return output.equals(other.output);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxConcept otherObj) {
-        if (otherObj == null) {
-            return -1;
-        }
-        if (this == otherObj) {
-            return 0;
-        }
-        if (getClass() != otherObj.getClass()) {
-            return this.hashCode() - otherObj.hashCode();
-        }
-
-        final AxStateTaskReference other = (AxStateTaskReference) otherObj;
-        if (!key.equals(other.key)) {
-            return key.compareTo(other.key);
-        }
-        if (!outputType.equals(other.outputType)) {
-            return outputType.compareTo(other.outputType);
-        }
-        return output.compareTo(other.output);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateTree.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateTree.java
deleted file mode 100644
index a27e1af1e..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxStateTree.java
+++ /dev/null
@@ -1,173 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix Foundation.
- *  Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.LinkedHashSet;
-import java.util.List;
-import java.util.Set;
-import java.util.TreeSet;
-import lombok.EqualsAndHashCode;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * The Class is used to return the tree that represents the state branches or chains in a policy. It
- * creates a tree that holds the state fan out branches in a policy that starts from the given top
- * state of the tree. Each branch from a state is held in a set of next states for the top state and
- * each branch in the state tree is itself a {@link AxStateTree} instance.
- *
- * <p>Validation checks for recursive state use, in other words validation forbids the use of a given
- * state more than once in a state tree.
- */
-@EqualsAndHashCode
-public class AxStateTree implements Comparable<AxStateTree> {
-    private final AxState thisState;
-    private final Set<AxStateTree> nextStates;
-
-    /**
-     * This constructor recursively creates a state tree for the given policy starting at the given
-     * state.
-     *
-     * @param policy the policy from which to read states
-     * @param thisState the state to start state tree construction at
-     * @param referencedStateNameSet a set of state names already referenced in the tree, null for
-     *        the first recursive call
-     */
-    public AxStateTree(final AxPolicy policy, final AxState thisState, Set<AxReferenceKey> referencedStateNameSet) {
-        Assertions.argumentNotNull(policy, "policy may not be null");
-        Assertions.argumentNotNull(thisState, "thisState may not be null");
-
-        this.thisState = thisState;
-        nextStates = new TreeSet<>();
-
-        for (final AxStateOutput stateOutput : thisState.getStateOutputs().values()) {
-            final AxState nextState = policy.getStateMap().get(stateOutput.getNextState().getLocalName());
-
-            // Check for end of state branch
-            if (stateOutput.getNextState().equals(AxReferenceKey.getNullKey())) {
-                continue;
-            }
-
-            if (referencedStateNameSet == null) {
-                referencedStateNameSet = new LinkedHashSet<>();
-                referencedStateNameSet.add(thisState.getKey());
-            }
-
-            // Check for state tree loops
-            if (referencedStateNameSet.contains(nextState.getKey())) {
-                throw new PolicyRuntimeException("loop detected in state tree for policy " + policy.getId() + " state "
-                        + thisState.getKey().getLocalName() + ", next state " + nextState.getKey().getLocalName()
-                        + " referenced more than once");
-            }
-            referencedStateNameSet.add(stateOutput.getNextState());
-            nextStates.add(new AxStateTree(policy, nextState, referencedStateNameSet));
-        }
-    }
-
-    /**
-     * Gets the state for this state tree node.
-     *
-     * @return the state
-     */
-    public AxState getState() {
-        return thisState;
-    }
-
-    /**
-     * Gets the next states for this state tree node.
-     *
-     * @return the next states
-     */
-    public Set<AxStateTree> getNextStates() {
-        return nextStates;
-    }
-
-    /**
-     * Gets the list of states referenced by this state tree as a list.
-     *
-     * @return the list of states referenced
-     */
-    public List<AxState> getReferencedStateList() {
-        final List<AxState> referencedStateList = new ArrayList<>();
-
-        referencedStateList.add(thisState);
-        for (final AxStateTree nextStateTree : nextStates) {
-            referencedStateList.addAll(nextStateTree.getReferencedStateList());
-        }
-
-        return referencedStateList;
-    }
-
-    /**
-     * Gets the list of states referenced by this state tree as a set.
-     *
-     * @return the set of states referenced
-     */
-    public Set<AxState> getReferencedStateSet() {
-        final Set<AxState> referencedStateSet = new TreeSet<>();
-
-        referencedStateSet.add(thisState);
-        for (final AxStateTree nextStateTree : nextStates) {
-            referencedStateSet.addAll(nextStateTree.getReferencedStateSet());
-        }
-
-        return referencedStateSet;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxStateTree otherObj) {
-        Assertions.argumentNotNull(otherObj, "comparison object may not be null");
-
-        if (this == otherObj) {
-            return 0;
-        }
-
-        final AxStateTree other = otherObj;
-        int result = thisState.compareTo(other.thisState);
-        if (result != 0) {
-            return result;
-        }
-
-        result = Integer.compare(nextStates.size(), other.nextStates.size());
-        if (result != 0) {
-            return result;
-        }
-
-        Iterator<AxStateTree> iter1 = nextStates.iterator();
-        Iterator<AxStateTree> iter2 = other.nextStates.iterator();
-
-        while (iter1.hasNext()) {
-            result = iter1.next().compareTo(iter2.next());
-            if (result != 0) {
-                return result;
-            }
-        }
-
-        return 0;
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTask.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTask.java
deleted file mode 100644
index c8b6baf4b..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTask.java
+++ /dev/null
@@ -1,405 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019-2022 Nordix Foundation.
- *  Modifications Copyright (C) 2021 Bell Canada. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import com.google.gson.annotations.SerializedName;
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Set;
-import java.util.TreeMap;
-import java.util.TreeSet;
-import lombok.Getter;
-import lombok.NonNull;
-import lombok.Setter;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKeyUse;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
-import org.onap.policy.apex.model.eventmodel.concepts.AxEvent;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * This class holds the definition of a task in Apex. A task is executed by a state and performs
- * some domain specific logic to carry out work required to be done by a policy. The Task Logic that
- * is executed by a task is held in a {@link AxTaskLogic} instance.
- *
- * <p>A task has a set of input fields and output fields, which are passed to and are emitted from the
- * task during a task execution cycle. A task may have task parameters {@link AxTaskParameter},
- * which are configuration values passed to a task at initialization time.
- *
- * <p>The Task Logic in a task may use information in context albums to perform their domain specific
- * work. The context albums that the task uses and that should be made available to the task by Apex
- * policy distribution are held as a set of references to context albums in the task.
- *
- * <p>During validation of a task, the validation checks listed below are executed:
- * <ol>
- * <li>The task key must not be a null key and must be valid, see validation in
- * {@link AxArtifactKey}
- * <li>The parent of each task parameter of a task must be that task
- * <li>Each task parameter must be valid, see validation in {@link AxTaskParameter}
- * <li>The parent of the task logic in a task must be that task
- * <li>The task logic must be valid, see validation in {@link AxTaskLogic}
- * </ol>
- */
-@Getter
-@Setter
-public class AxTask extends AxConcept {
-    private static final String DOES_NOT_EQUAL_TASK_KEY = " does not equal task key";
-
-    private static final long serialVersionUID = 5374237330697362762L;
-
-    @NonNull
-    private AxArtifactKey key;
-
-    private AxEvent inputEvent;
-    private Map<String, AxEvent> outputEvents;
-    private Map<String, AxTaskParameter> taskParameters;
-
-    @SerializedName("contextAlbumReference")
-    @NonNull
-    private Set<AxArtifactKey> contextAlbumReferenceSet;
-
-    @NonNull
-    private AxTaskLogic taskLogic;
-
-    /**
-     * The Default Constructor creates a task with a null key no input or output fields, no task
-     * parameters, no context album references and no logic.
-     */
-    public AxTask() {
-        this(new AxArtifactKey());
-        contextAlbumReferenceSet = new TreeSet<>();
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxTask(final AxTask copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The Keyed Constructor creates a task with the given key no input or output fields, no task
-     * parameters, no context album references and no logic.
-     *
-     * @param key the key of the task
-     */
-    public AxTask(final AxArtifactKey key) {
-        this(key, // Task Key
-                new TreeMap<>(), // Task Parameters
-                new TreeSet<>(), // Context Album References
-                new AxTaskLogic(new AxReferenceKey(key)) // Task Logic
-        );
-    }
-
-    /**
-     * This Constructor defines all the fields of the task.
-     *
-     * @param key the key of the task
-     * @param taskParameters the task parameters that are used to initialize tasks of this type
-     * @param contextAlbumReferenceSet the context album reference set defines the context that may
-     *        be used by Task Logic in the state
-     * @param taskLogic the task logic that performs the domain specific work of the task
-     */
-    public AxTask(final AxArtifactKey key, final Map<String, AxTaskParameter> taskParameters,
-        final Set<AxArtifactKey> contextAlbumReferenceSet, final AxTaskLogic taskLogic) {
-        super();
-        Assertions.argumentNotNull(key, "key may not be null");
-        Assertions.argumentNotNull(taskParameters, "taskParameters may not be null");
-        Assertions.argumentNotNull(contextAlbumReferenceSet, "contextAlbumReferenceSet may not be null");
-        Assertions.argumentNotNull(taskLogic, "taskLogic may not be null");
-
-        this.key = key;
-        this.taskParameters = taskParameters;
-        this.contextAlbumReferenceSet = contextAlbumReferenceSet;
-        this.taskLogic = taskLogic;
-    }
-
-    /**
-     * When a task is deserialized from disk or from the database, the parent of contained objects
-     * is not defined. This method is called by JAXB after deserialization and is used to set the
-     * parent keys of all {@link AxTaskParameter} instance in the task.
-     */
-    @Override
-    public void buildReferences() {
-        if (!taskLogic.getKey().getLocalName().equals(AxKey.NULL_KEY_NAME)) {
-            taskLogic.getKey().setParentArtifactKey(key);
-        }
-
-        taskParameters.values().stream().forEach(parameter -> parameter.getKey().setParentArtifactKey(key));
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = key.getKeys();
-        for (final AxTaskParameter taskParameter : taskParameters.values()) {
-            keyList.addAll(taskParameter.getKeys());
-        }
-        for (final AxArtifactKey contextAlbumKey : contextAlbumReferenceSet) {
-            keyList.add(new AxKeyUse(contextAlbumKey));
-        }
-        keyList.addAll(taskLogic.getKeys());
-        return keyList;
-    }
-
-    /**
-     * Gets the context album reference set defines the context that may be used by Task Logic in
-     * the state.
-     *
-     * @return the context album reference set defines the context that may be used by Task Logic in
-     *         the state
-     */
-    public Set<AxArtifactKey> getContextAlbumReferences() {
-        return contextAlbumReferenceSet;
-    }
-
-    /**
-     * Sets the context album reference set defines the context that may be used by Task Logic in
-     * the state.
-     *
-     * @param contextAlbumReferences the context album reference set defines the context that may be
-     *        used by Task Logic in the state
-     */
-    public void setContextAlbumReferences(final Set<AxArtifactKey> contextAlbumReferences) {
-        Assertions.argumentNotNull(contextAlbumReferences, "contextAlbumReferences may not be null");
-        this.contextAlbumReferenceSet = contextAlbumReferences;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxValidationResult validate(final AxValidationResult resultIn) {
-        AxValidationResult result = resultIn;
-
-        if (key.equals(AxArtifactKey.getNullKey())) {
-            result.addValidationMessage(
-                    new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID, "key is a null key"));
-        }
-
-        result = key.validate(result);
-
-        for (final Entry<String, AxTaskParameter> taskParameterEntry : taskParameters.entrySet()) {
-            result = validateTaskParameterEntry(taskParameterEntry, result);
-        }
-
-        for (final AxArtifactKey contextAlbumReference : contextAlbumReferenceSet) {
-            result = validateContextAlbumReference(contextAlbumReference, result);
-        }
-
-        if (!taskLogic.getKey().getParentArtifactKey().equals(key)) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                    "taskLogic parent key " + taskLogic.getKey().getId() + DOES_NOT_EQUAL_TASK_KEY));
-        }
-
-        return taskLogic.validate(result);
-    }
-
-    /**
-     * Validate a task parameter entry.
-     *
-     * @param taskParameterEntry the task parameter entry to validate
-     * @param result The validation result to append to
-     * @return The result of the validation
-     */
-    private AxValidationResult validateTaskParameterEntry(final Entry<String, AxTaskParameter> taskParameterEntry,
-            AxValidationResult result) {
-        if (taskParameterEntry.getValue() == null) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                    "null input task parameter value found on task parameter " + taskParameterEntry.getKey()));
-        } else {
-            if (!taskParameterEntry.getValue().getKey().getParentArtifactKey().equals(key)) {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                        "parent key on task parameter " + taskParameterEntry.getKey() + DOES_NOT_EQUAL_TASK_KEY));
-            }
-
-            result = taskParameterEntry.getValue().validate(result);
-        }
-
-        return result;
-    }
-
-    /**
-     * Validate a context album reference entry.
-     *
-     * @param contextAlbumReference the context album reference entry to validate
-     * @param result The validation result to append to
-     * @return The result of the validation
-     */
-    private AxValidationResult validateContextAlbumReference(final AxArtifactKey contextAlbumReference,
-            AxValidationResult result) {
-        if (contextAlbumReference.equals(AxArtifactKey.getNullKey())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                    "key on context item reference entry " + contextAlbumReference.getKey()
-                            + " may not be the null key"));
-        }
-
-        return contextAlbumReference.validate(result);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        key.clean();
-        for (final AxTaskParameter parameter : taskParameters.values()) {
-            parameter.clean();
-        }
-        for (final AxArtifactKey contextAlbumReference : contextAlbumReferenceSet) {
-            contextAlbumReference.clean();
-        }
-        taskLogic.clean();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-        builder.append(this.getClass().getSimpleName());
-        builder.append(":(");
-        builder.append("key=");
-        builder.append(key);
-        builder.append(",taskParameters=");
-        builder.append(taskParameters);
-        builder.append(",contextAlbumReferenceSet=");
-        builder.append(contextAlbumReferenceSet);
-        builder.append(",taskLogic=");
-        builder.append(taskLogic);
-        builder.append(")");
-        return builder.toString();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxConcept copyTo(final AxConcept targetObject) {
-        Assertions.argumentNotNull(targetObject, "target may not be null");
-
-        final Object copyObject = targetObject;
-        Assertions.instanceOf(copyObject, AxTask.class);
-
-        final AxTask copy = ((AxTask) copyObject);
-        copy.setKey(key);
-
-        final Map<String, AxTaskParameter> newTaskParameter = new TreeMap<>();
-        for (final Entry<String, AxTaskParameter> taskParameterEntry : taskParameters.entrySet()) {
-            newTaskParameter.put(taskParameterEntry.getKey(), new AxTaskParameter(taskParameterEntry.getValue()));
-        }
-        copy.setTaskParameters(newTaskParameter);
-
-        final Set<AxArtifactKey> newContextUsage = new TreeSet<>();
-        for (final AxArtifactKey contextAlbumReference : contextAlbumReferenceSet) {
-            newContextUsage.add(new AxArtifactKey(contextAlbumReference));
-        }
-        copy.setContextAlbumReferences(newContextUsage);
-
-        copy.setTaskLogic(new AxTaskLogic(taskLogic));
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + taskParameters.hashCode();
-        result = prime * result + contextAlbumReferenceSet.hashCode();
-        result = prime * result + taskLogic.hashCode();
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public boolean equals(final Object obj) {
-        if (obj == null) {
-            return false;
-        }
-        if (this == obj) {
-            return true;
-        }
-
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-
-        final AxTask other = (AxTask) obj;
-        if (!key.equals(other.key)) {
-            return false;
-        }
-        if (!taskParameters.equals(other.taskParameters)) {
-            return false;
-        }
-        if (!contextAlbumReferenceSet.equals(other.contextAlbumReferenceSet)) {
-            return false;
-        }
-        return taskLogic.equals(other.taskLogic);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxConcept otherObj) {
-        if (otherObj == null) {
-            return -1;
-        }
-        if (this == otherObj) {
-            return 0;
-        }
-        if (getClass() != otherObj.getClass()) {
-            return this.hashCode() - otherObj.hashCode();
-        }
-
-        final AxTask other = (AxTask) otherObj;
-        if (!key.equals(other.key)) {
-            return key.compareTo(other.key);
-        }
-        if (!taskParameters.equals(other.taskParameters)) {
-            return (taskParameters.hashCode() - other.taskParameters.hashCode());
-        }
-        if (!contextAlbumReferenceSet.equals(other.contextAlbumReferenceSet)) {
-            return (contextAlbumReferenceSet.hashCode() - other.contextAlbumReferenceSet.hashCode());
-        }
-        return taskLogic.compareTo(other.taskLogic);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTaskLogic.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTaskLogic.java
deleted file mode 100644
index 8665d9e3e..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTaskLogic.java
+++ /dev/null
@@ -1,120 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2022 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-
-/**
- * This class holds Task Logic for {@link AxTask} tasks in Apex. It is a specialization of the
- * {@link AxLogic} class, so that Task Logic in Apex states can be strongly typed.
- *
- * <p>Task Logic is used to execute tasks {@link AxTask} in Apex. The logic uses fields on the incoming
- * trigger event and information from the context albums available on a task to get context during
- * execution. The task logic populates the output fields of the task.
- *
- * <p>Validation uses standard Apex Logic validation, see validation in {@link AxLogic}.
- */
-public class AxTaskLogic extends AxLogic {
-    private static final long serialVersionUID = 2090324845463750391L;
-
-    /**
-     * The Default Constructor creates a logic instance with a null key, undefined logic flavour and
-     * a null logic string.
-     */
-    public AxTaskLogic() {
-        super();
-    }
-
-    /**
-     * The Key Constructor creates a logic instance with the given reference key, undefined logic
-     * flavour and a null logic string.
-     *
-     * @param key the reference key of the logic
-     */
-    public AxTaskLogic(final AxReferenceKey key) {
-        super(key, LOGIC_FLAVOUR_UNDEFINED, "");
-    }
-
-    /**
-     * This Constructor creates a logic instance with a reference key constructed from the parents
-     * key and the logic local name and all of its fields defined.
-     *
-     * @param parentKey the reference key of the parent of this logic
-     * @param logicName the logic name, held as the local name of the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logic the actual logic as a string
-     */
-    public AxTaskLogic(final AxArtifactKey parentKey, final String logicName, final String logicFlavour,
-            final String logic) {
-        super(new AxReferenceKey(parentKey, logicName), logicFlavour, logic);
-    }
-
-    /**
-     * This Constructor creates a logic instance with the given reference key and all of its fields
-     * defined.
-     *
-     * @param key the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logic the actual logic as a string
-     */
-    public AxTaskLogic(final AxReferenceKey key, final String logicFlavour, final String logic) {
-        super(key, logicFlavour, logic);
-    }
-
-    /**
-     * This Constructor creates a logic instance by cloning the fields from another logic instance
-     * into this logic instance.
-     *
-     * @param logic the logic instance to clone from
-     */
-    public AxTaskLogic(final AxLogic logic) {
-        super(new AxReferenceKey(logic.getKey()), logic.getLogicFlavour(), logic.getLogic());
-    }
-
-    /**
-     * This Constructor creates a logic instance with a reference key constructed from the parents
-     * key and the logic local name, the given logic flavour, with the logic being provided by the
-     * given logic reader instance.
-     *
-     * @param parentKey the reference key of the parent of this logic
-     * @param logicName the logic name, held as the local name of the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logicReader the logic reader to use to read the logic for this logic instance
-     */
-    public AxTaskLogic(final AxArtifactKey parentKey, final String logicName, final String logicFlavour,
-            final AxLogicReader logicReader) {
-        super(new AxReferenceKey(parentKey, logicName), logicFlavour, logicReader);
-    }
-
-    /**
-     * This Constructor creates a logic instance with the given reference key and logic flavour, the
-     * logic is provided by the given logic reader instance.
-     *
-     * @param key the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logicReader the logic reader to use to read the logic for this logic instance
-     */
-    public AxTaskLogic(final AxReferenceKey key, final String logicFlavour, final AxLogicReader logicReader) {
-        super(key, logicFlavour, logicReader);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTaskParameter.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTaskParameter.java
deleted file mode 100644
index a468ec499..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTaskParameter.java
+++ /dev/null
@@ -1,253 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019,2022 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import java.util.List;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * This class is used to specify the configuration parameters that may be passed to a task
- * {@link AxTask}. Task parameters are read from a configuration file when Apex starts and are
- * passed to the task by the Apex engine when a task is executed. Each task parameter has a key and
- * a default value. If the task parameter is not set in a configuration file, the task uses its
- * default value.
- */
-public class AxTaskParameter extends AxConcept {
-    private static final long serialVersionUID = 7351688156934099977L;
-
-    private AxReferenceKey key;
-    private String defaultValue;
-
-    /**
-     * The Default Constructor creates a task parameter with a null reference key and a null default
-     * value.
-     */
-    public AxTaskParameter() {
-        this(new AxReferenceKey());
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxTaskParameter(final AxTaskParameter copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The Keyed Constructor creates a task parameter with the given reference key and a null
-     * default value.
-     *
-     * @param taskParameterKey the task parameter key
-     */
-    public AxTaskParameter(final AxReferenceKey taskParameterKey) {
-        this(taskParameterKey, "");
-    }
-
-    /**
-     * The Default Constructor creates a task parameter with the given reference key and default
-     * value.
-     *
-     * @param key the reference key of the task parameter
-     * @param defaultValue the default value of the task parameter
-     */
-    public AxTaskParameter(final AxReferenceKey key, final String defaultValue) {
-        super();
-        Assertions.argumentNotNull(key, "key may not be null");
-        Assertions.argumentNotNull(defaultValue, "defaultValue may not be null");
-
-        this.key = key;
-        this.defaultValue = defaultValue.trim();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxReferenceKey getKey() {
-        return key;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        return key.getKeys();
-    }
-
-    /**
-     * Sets the reference key of the task parameter.
-     *
-     * @param key the reference key of the task parameter
-     */
-    public void setKey(final AxReferenceKey key) {
-        Assertions.argumentNotNull(key, "key may not be null");
-        this.key = key;
-    }
-
-    /**
-     * Gets the default value of the task parameter.
-     *
-     * @return the default value of the task parameter
-     */
-    public String getTaskParameterValue() {
-        return defaultValue;
-    }
-
-    /**
-     * Sets the default value of the task parameter.
-     *
-     * @param defaultValue the default value of the task parameter
-     */
-    public void setDefaultValue(final String defaultValue) {
-        Assertions.argumentNotNull(defaultValue, "defaultValue may not be null");
-        this.defaultValue = defaultValue.trim();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxValidationResult validate(final AxValidationResult resultIn) {
-        AxValidationResult result = resultIn;
-
-        if (key.equals(AxReferenceKey.getNullKey())) {
-            result.addValidationMessage(
-                    new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID, "key is a null key"));
-        }
-
-        result = key.validate(result);
-
-        if (defaultValue.trim().length() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.WARNING,
-                    "no defaultValue specified, defaultValue is blank"));
-        }
-
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        key.clean();
-        defaultValue = defaultValue.trim();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-        builder.append(this.getClass().getSimpleName());
-        builder.append(":(");
-        builder.append("key=");
-        builder.append(key);
-        builder.append(",defaultValue=");
-        builder.append(defaultValue);
-        builder.append(")");
-        return builder.toString();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxConcept copyTo(final AxConcept targetObject) {
-        Assertions.argumentNotNull(targetObject, "target may not be null");
-
-        final Object copyObject = targetObject;
-        Assertions.instanceOf(copyObject, AxTaskParameter.class);
-
-        final AxTaskParameter copy = ((AxTaskParameter) copyObject);
-        copy.setKey(new AxReferenceKey(key));
-        copy.setDefaultValue(defaultValue);
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + defaultValue.hashCode();
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public boolean equals(final Object obj) {
-        if (obj == null) {
-            return false;
-        }
-        if (this == obj) {
-            return true;
-        }
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-
-        final AxTaskParameter other = (AxTaskParameter) obj;
-        if (!key.equals(other.key)) {
-            return false;
-        }
-        return defaultValue.equals(other.defaultValue);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxConcept otherObj) {
-        if (otherObj == null) {
-            return -1;
-        }
-        if (this == otherObj) {
-            return 0;
-        }
-        if (getClass() != otherObj.getClass()) {
-            return this.hashCode() - otherObj.hashCode();
-        }
-
-        final AxTaskParameter other = (AxTaskParameter) otherObj;
-        if (!key.equals(other.key)) {
-            return key.compareTo(other.key);
-        }
-        return defaultValue.compareTo(other.defaultValue);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTaskSelectionLogic.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTaskSelectionLogic.java
deleted file mode 100644
index b9cfd802d..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTaskSelectionLogic.java
+++ /dev/null
@@ -1,119 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2022 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-
-/**
- * This class holds Task Selection Logic for {@link AxState} states in Apex. It is a specialization
- * of the {@link AxLogic} class, so that Task Selection Logic in Apex states can be strongly typed.
- *
- * <p>Task Selection Logic is used to select the task {@link AxTask} that a state will execute. The
- * logic uses fields on the incoming trigger event and information from the context albums available
- * on a state to decide what task {@link AxTask} to select for execution in a given context.
- *
- * <p>Validation uses standard Apex Logic validation, see validation in {@link AxLogic}.
- */
-public class AxTaskSelectionLogic extends AxLogic {
-    private static final long serialVersionUID = 2090324845463750391L;
-
-    /**
-     * The Default Constructor creates a logic instance with a null key, undefined logic flavour and
-     * a null logic string.
-     */
-    public AxTaskSelectionLogic() {
-        super();
-    }
-
-    /**
-     * The Key Constructor creates a logic instance with the given reference key, undefined logic
-     * flavour and a null logic string.
-     *
-     * @param key the reference key of the logic
-     */
-    public AxTaskSelectionLogic(final AxReferenceKey key) {
-        super(key, LOGIC_FLAVOUR_UNDEFINED, "");
-    }
-
-    /**
-     * This Constructor creates a logic instance with a reference key constructed from the parents
-     * key and the logic local name and all of its fields defined.
-     *
-     * @param parentKey the reference key of the parent of this logic
-     * @param logicName the logic name, held as the local name of the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logic the actual logic as a string
-     */
-    public AxTaskSelectionLogic(final AxReferenceKey parentKey, final String logicName, final String logicFlavour,
-            final String logic) {
-        super(parentKey, logicName, logicFlavour, logic);
-    }
-
-    /**
-     * This Constructor creates a logic instance with the given reference key and all of its fields
-     * defined.
-     *
-     * @param key the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logic the actual logic as a string
-     */
-    public AxTaskSelectionLogic(final AxReferenceKey key, final String logicFlavour, final String logic) {
-        super(key, logicFlavour, logic);
-    }
-
-    /**
-     * This Constructor creates a logic instance by cloning the fields from another logic instance
-     * into this logic instance.
-     *
-     * @param logic the logic instance to clone from
-     */
-    public AxTaskSelectionLogic(final AxLogic logic) {
-        super(new AxReferenceKey(logic.getKey()), logic.getLogicFlavour(), logic.getLogic());
-    }
-
-    /**
-     * This Constructor creates a logic instance with a reference key constructed from the parents
-     * key and the logic local name, the given logic flavour, with the logic being provided by the
-     * given logic reader instance.
-     *
-     * @param parentKey the reference key of the parent of this logic
-     * @param logicName the logic name, held as the local name of the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logicReader the logic reader to use to read the logic for this logic instance
-     */
-    public AxTaskSelectionLogic(final AxReferenceKey parentKey, final String logicName, final String logicFlavour,
-            final AxLogicReader logicReader) {
-        super(new AxReferenceKey(parentKey, logicName), logicFlavour, logicReader);
-    }
-
-    /**
-     * This Constructor creates a logic instance with the given reference key and logic flavour, the
-     * logic is provided by the given logic reader instance.
-     *
-     * @param key the reference key of this logic
-     * @param logicFlavour the flavour of this logic
-     * @param logicReader the logic reader to use to read the logic for this logic instance
-     */
-    public AxTaskSelectionLogic(final AxReferenceKey key, final String logicFlavour, final AxLogicReader logicReader) {
-        super(key, logicFlavour, logicReader);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTasks.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTasks.java
deleted file mode 100644
index f9ccafd54..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/AxTasks.java
+++ /dev/null
@@ -1,351 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019-2020,2022 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.NavigableMap;
-import java.util.Set;
-import java.util.TreeMap;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConceptGetter;
-import org.onap.policy.apex.model.basicmodel.concepts.AxConceptGetterImpl;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * This class is a task container and holds a map of the tasks for an entire Apex model. All Apex
- * models that use tasks must have an {@link AxTasks} field. The {@link AxTasks} class implements
- * the helper methods of the {@link AxConceptGetter} interface to allow {@link AxTask} instances to
- * be retrieved by calling methods directly on this class without referencing the contained map.
- *
- * <p>Validation checks that the container key is not null. An error is issued if no tasks are defined
- * in the container. Each task entry is checked to ensure that its key and value are not null and
- * that the key matches the key in the map value. Each task entry is then validated individually.
- */
-public class AxTasks extends AxConcept implements AxConceptGetter<AxTask> {
-    private static final long serialVersionUID = 4290442590545820316L;
-
-    private AxArtifactKey key;
-    private Map<AxArtifactKey, AxTask> taskMap;
-
-    /**
-     * The Default Constructor creates a {@link AxTasks} object with a null artifact key and creates
-     * an empty event map.
-     */
-    public AxTasks() {
-        this(new AxArtifactKey());
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxTasks(final AxTasks copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The Keyed Constructor creates a {@link AxTasks} object with the given artifact key and
-     * creates an empty event map.
-     *
-     * @param key the key
-     */
-    public AxTasks(final AxArtifactKey key) {
-        this(key, new TreeMap<>());
-    }
-
-    /**
-     * This Constructor creates a task container with all of its fields defined.
-     *
-     * @param key     the task container key
-     * @param taskMap the tasks to be stored in the task container
-     */
-    public AxTasks(final AxArtifactKey key, final Map<AxArtifactKey, AxTask> taskMap) {
-        super();
-        Assertions.argumentNotNull(key, "key may not be null");
-        Assertions.argumentNotNull(taskMap, "taskMap may not be null");
-
-        this.key = key;
-        this.taskMap = new TreeMap<>();
-        this.taskMap.putAll(taskMap);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxArtifactKey getKey() {
-        return key;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = key.getKeys();
-
-        for (final AxTask task : taskMap.values()) {
-            keyList.addAll(task.getKeys());
-        }
-
-        return keyList;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void buildReferences() {
-        taskMap.values().stream().forEach(task -> task.buildReferences());
-    }
-
-    /**
-     * Sets the task container key.
-     *
-     * @param key the task container key
-     */
-    public void setKey(final AxArtifactKey key) {
-        Assertions.argumentNotNull(key, "key may not be null");
-        this.key = key;
-    }
-
-    /**
-     * Gets the tasks stored in the task container.
-     *
-     * @return the tasks stored in the task container
-     */
-    public Map<AxArtifactKey, AxTask> getTaskMap() {
-        return taskMap;
-    }
-
-    /**
-     * Sets the tasks to be stored in the task container.
-     *
-     * @param taskMap the tasks to be stored in the task container
-     */
-    public void setTaskMap(final Map<AxArtifactKey, AxTask> taskMap) {
-        Assertions.argumentNotNull(taskMap, "taskMap may not be null");
-        this.taskMap = new TreeMap<>();
-        this.taskMap.putAll(taskMap);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxValidationResult validate(final AxValidationResult resultIn) {
-        AxValidationResult result = resultIn;
-
-        if (key.equals(AxArtifactKey.getNullKey())) {
-            result.addValidationMessage(
-                new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID, "key is a null key"));
-        }
-
-        result = key.validate(result);
-
-        if (taskMap.size() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                "taskMap may not be empty"));
-        } else {
-            for (final Entry<AxArtifactKey, AxTask> taskEntry : taskMap.entrySet()) {
-                if (taskEntry.getKey().equals(AxArtifactKey.getNullKey())) {
-                    result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                        "key on task entry " + taskEntry.getKey() + " may not be the null key"));
-                } else if (taskEntry.getValue() == null) {
-                    result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                        "value on task entry " + taskEntry.getKey() + " may not be null"));
-                } else {
-                    if (!taskEntry.getKey().equals(taskEntry.getValue().getKey())) {
-                        result.addValidationMessage(new AxValidationMessage(key, this.getClass(),
-                            ValidationResult.INVALID, "key on task entry key " + taskEntry.getKey()
-                            + " does not equal task value key " + taskEntry.getValue().getKey()));
-                    }
-
-                    result = taskEntry.getValue().validate(result);
-                }
-            }
-        }
-
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        key.clean();
-        for (final Entry<AxArtifactKey, AxTask> taskEntry : taskMap.entrySet()) {
-            taskEntry.getKey().clean();
-            taskEntry.getValue().clean();
-        }
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-        builder.append(this.getClass().getSimpleName());
-        builder.append(":(");
-        builder.append("key=");
-        builder.append(key);
-        builder.append(",taskMap=");
-        builder.append(taskMap);
-        builder.append(")");
-        return builder.toString();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxConcept copyTo(final AxConcept targetObject) {
-        Assertions.argumentNotNull(targetObject, "target may not be null");
-
-        final Object copyObject = targetObject;
-        Assertions.instanceOf(copyObject, AxTasks.class);
-
-        final AxTasks copy = ((AxTasks) copyObject);
-        copy.setKey(new AxArtifactKey(key));
-
-        final Map<AxArtifactKey, AxTask> newTaskMap = new TreeMap<>();
-        for (final Entry<AxArtifactKey, AxTask> taskMapEntry : taskMap.entrySet()) {
-            newTaskMap.put(new AxArtifactKey(taskMapEntry.getKey()), new AxTask(taskMapEntry.getValue()));
-        }
-        copy.setTaskMap(newTaskMap);
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + taskMap.hashCode();
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public boolean equals(final Object obj) {
-        if (obj == null) {
-            return false;
-        }
-        if (this == obj) {
-            return true;
-        }
-
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-
-        final AxTasks other = (AxTasks) obj;
-        if (!key.equals(other.key)) {
-            return false;
-        }
-        return taskMap.equals(other.taskMap);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxConcept otherObj) {
-        if (otherObj == null) {
-            return -1;
-        }
-        if (this == otherObj) {
-            return 0;
-        }
-        if (getClass() != otherObj.getClass()) {
-            return this.hashCode() - otherObj.hashCode();
-        }
-
-        final AxTasks other = (AxTasks) otherObj;
-        if (!key.equals(other.key)) {
-            return key.compareTo(other.key);
-        }
-        if (!taskMap.equals(other.taskMap)) {
-            return (taskMap.hashCode() - other.taskMap.hashCode());
-        }
-
-        return 0;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxTask get(final AxArtifactKey conceptKey) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxTask>) taskMap).get(conceptKey);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxTask get(final String conceptKeyName) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxTask>) taskMap).get(conceptKeyName);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxTask get(final String conceptKeyName, final String conceptKeyVersion) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxTask>) taskMap).get(conceptKeyName,
-            conceptKeyVersion);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public Set<AxTask> getAll(final String conceptKeyName) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxTask>) taskMap).getAll(conceptKeyName);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public Set<AxTask> getAll(final String conceptKeyName, final String conceptKeyVersion) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxTask>) taskMap).getAll(conceptKeyName,
-            conceptKeyVersion);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/PolicyException.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/PolicyException.java
deleted file mode 100644
index 271e0c2af..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/PolicyException.java
+++ /dev/null
@@ -1,51 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * 
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
-
-/**
- * This exception is raised if an error occurs in an Apex policy or in Apex policy handling.
- *
- * @author Liam Fallon
- */
-public class PolicyException extends ApexException {
-    private static final long serialVersionUID = -8507246953751956974L;
-
-    /**
-     * Instantiates a new apex policy exception with a message.
-     *
-     * @param message the message
-     */
-    public PolicyException(final String message) {
-        super(message);
-    }
-
-    /**
-     * Instantiates a new apex policy exception with a message and a caused by exception.
-     *
-     * @param message the message
-     * @param exception the exception that caused this exception to be thrown
-     */
-    public PolicyException(final String message, final Exception exception) {
-        super(message, exception);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/PolicyRuntimeException.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/PolicyRuntimeException.java
deleted file mode 100644
index 7ad293187..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/PolicyRuntimeException.java
+++ /dev/null
@@ -1,51 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * 
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.concepts;
-
-import org.onap.policy.apex.model.basicmodel.concepts.ApexRuntimeException;
-
-/**
- * This exception is raised if a runtime error occurs in an Apex policy or in Apex policy handling.
- *
- * @author Liam Fallon
- */
-public class PolicyRuntimeException extends ApexRuntimeException {
-    private static final long serialVersionUID = -8507246953751956974L;
-
-    /**
-     * Instantiates a new apex policy runtime exception with a message.
-     *
-     * @param message the message
-     */
-    public PolicyRuntimeException(final String message) {
-        super(message);
-    }
-
-    /**
-     * Instantiates a new apex policy runtime exception with a message and a caused by exception.
-     *
-     * @param message the message
-     * @param exception the exception that caused this exception to be thrown
-     */
-    public PolicyRuntimeException(final String message, final Exception exception) {
-        super(message, exception);
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/package-info.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/package-info.java
deleted file mode 100644
index acf0e8221..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/concepts/package-info.java
+++ /dev/null
@@ -1,28 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2022 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-/**
- * Contains the concepts required to specify policies and tasks in APEX. It defines the main Apex
- * concepts of policies and tasks.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-package org.onap.policy.apex.model.policymodel.concepts;
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyAnalyser.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyAnalyser.java
deleted file mode 100644
index 6731caf30..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyAnalyser.java
+++ /dev/null
@@ -1,178 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix Foundation.
- *  Modifications Copyright (C) 2021 Bell Canada. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.handling;
-
-import java.util.Map.Entry;
-import java.util.Set;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.contextmodel.concepts.AxContextAlbum;
-import org.onap.policy.apex.model.eventmodel.concepts.AxEvent;
-import org.onap.policy.apex.model.eventmodel.concepts.AxField;
-import org.onap.policy.apex.model.policymodel.concepts.AxPolicy;
-import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
-import org.onap.policy.apex.model.policymodel.concepts.AxState;
-import org.onap.policy.apex.model.policymodel.concepts.AxStateOutput;
-import org.onap.policy.apex.model.policymodel.concepts.AxTask;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * This class analyses a policy model and shows what the usage of each context album, context item, data type, and event
- * is.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-public class PolicyAnalyser {
-    /**
-     * Perform an analysis on a policy model.
-     *
-     * @param policyModel The policy model
-     * @return the analysis result of the policy model
-     */
-    public PolicyAnalysisResult analyse(final AxPolicyModel policyModel) {
-        Assertions.argumentNotNull(policyModel, "policyModel may not be null");
-
-        final PolicyAnalysisResult result = new PolicyAnalysisResult(policyModel);
-
-        for (final AxPolicy policy : policyModel.getPolicies().getPolicyMap().values()) {
-            for (final AxState state : policy.getStateMap().values()) {
-                analyseState(state, result);
-            }
-        }
-
-        for (final AxTask task : policyModel.getTasks().getTaskMap().values()) {
-            analyseTask(task, result);
-        }
-
-        for (final AxEvent event : policyModel.getEvents().getEventMap().values()) {
-            analyseEvent(event, result);
-        }
-
-        for (final AxContextAlbum contextAlbum : policyModel.getAlbums().getAll(null)) {
-            result.getContextSchemaUsage().get(contextAlbum.getItemSchema()).add(contextAlbum.getKey());
-        }
-
-        return result;
-    }
-
-    /**
-     * Perform an analysis on a single policy in a policy model.
-     *
-     * @param policyModel The policy model
-     * @param policy The policy
-     * @return the analysis result of the policy model
-     */
-    public PolicyAnalysisResult analyse(final AxPolicyModel policyModel, final AxPolicy policy) {
-        Assertions.argumentNotNull(policyModel, "policyModel may not be null");
-        Assertions.argumentNotNull(policy, "policy may not be null");
-
-        final PolicyAnalysisResult result = new PolicyAnalysisResult(policyModel);
-
-        for (final AxState state : policy.getStateMap().values()) {
-            analyseState(state, result);
-        }
-
-        // Only analyse tasks used by this policy
-        for (final Entry<AxArtifactKey, Set<AxKey>> taskUsageEntry : result.getTaskUsage().entrySet()) {
-            // If the usage set is empty, then we skip the task as its not used in the policy
-            if (!taskUsageEntry.getValue().isEmpty()) {
-                analyseTask(policyModel.getTasks().getTaskMap().get(taskUsageEntry.getKey()), result);
-            }
-        }
-
-        // Only analyse events used by this policy, same approach as for tasks
-        for (final Entry<AxArtifactKey, Set<AxKey>> eventUsageEntry : result.getEventUsage().entrySet()) {
-            if (!eventUsageEntry.getValue().isEmpty()) {
-                analyseEvent(policyModel.getEvents().getEventMap().get(eventUsageEntry.getKey()), result);
-            }
-        }
-
-        // Only analyse context albums used by this policy, same approach as for tasks
-        for (final Entry<AxArtifactKey, Set<AxKey>> contextAlbumUsageEntry : result.getContextAlbumUsage().entrySet()) {
-            if (!contextAlbumUsageEntry.getValue().isEmpty()) {
-                final AxContextAlbum contextAlbum = policyModel.getAlbums().get(contextAlbumUsageEntry.getKey());
-                result.getContextSchemaUsage().get(contextAlbum.getItemSchema()).add(contextAlbum.getKey());
-            }
-        }
-
-        for (final AxEvent event : policyModel.getEvents().getEventMap().values()) {
-            analyseEvent(event, result);
-        }
-
-        for (final AxContextAlbum contextAlbum : policyModel.getAlbums().getAll(null)) {
-            result.getContextSchemaUsage().get(contextAlbum.getItemSchema()).add(contextAlbum.getKey());
-        }
-
-        return result;
-    }
-
-    /**
-     * Analyse the usage of concepts by a state.
-     *
-     * @param state the state to analyse
-     * @param result the result
-     */
-    private void analyseState(final AxState state, final PolicyAnalysisResult result) {
-        // Event usage by state
-        result.getEventUsage().get(state.getTrigger()).add(state.getKey());
-        for (final AxStateOutput stateOutput : state.getStateOutputs().values()) {
-            result.getEventUsage().get(stateOutput.getOutgoingEvent()).add(state.getKey());
-        }
-
-        // State Context Usage
-        for (final AxArtifactKey contextAlbumKey : state.getContextAlbumReferences()) {
-            result.getContextAlbumUsage().get(contextAlbumKey).add(state.getKey());
-        }
-
-        // Task usage by state
-        for (final AxArtifactKey task : state.getTaskReferences().keySet()) {
-            result.getTaskUsage().get(task).add(state.getKey());
-        }
-    }
-
-    /**
-     * Analyse the usage of concepts by a task.
-     *
-     * @param task the task to analyse
-     * @param result the result
-     */
-    private void analyseTask(final AxTask task, final PolicyAnalysisResult result) {
-        // Task Context Usage
-        for (final AxArtifactKey contextAlbumKey : task.getContextAlbumReferences()) {
-            result.getContextAlbumUsage().get(contextAlbumKey).add(task.getKey());
-        }
-    }
-
-    /**
-     * Analyse the usage of concepts by an event.
-     *
-     * @param event the event to analyse
-     * @param result the result of the analysis
-     */
-    private void analyseEvent(final AxEvent event, final PolicyAnalysisResult result) {
-        // Event data type usage
-        for (final AxField eventField : event.getFields()) {
-            result.getContextSchemaUsage().get(eventField.getSchema()).add(event.getKey());
-        }
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyAnalysisResult.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyAnalysisResult.java
deleted file mode 100644
index 96bdc57d0..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyAnalysisResult.java
+++ /dev/null
@@ -1,266 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2020 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.handling;
-
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Set;
-import java.util.TreeMap;
-import java.util.TreeSet;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.contextmodel.concepts.AxContextAlbum;
-import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
-
-/**
- * This class finds and holds the usage of context schemas, context albums, events, and tasks by the policies in a
- * policy model.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-public class PolicyAnalysisResult {
-    // Usage of context schemas
-    private final Map<AxArtifactKey, Set<AxKey>> contextSchemaUsage = new TreeMap<>();
-
-    // Usage of context maps
-    private final Map<AxArtifactKey, Set<AxKey>> contextAlbumUsage = new TreeMap<>();
-
-    // Usage of events
-    private final Map<AxArtifactKey, Set<AxKey>> eventUsage = new TreeMap<>();
-
-    // Usage of tasks
-    private final Map<AxArtifactKey, Set<AxKey>> taskUsage = new TreeMap<>();
-
-    /**
-     * This constructor creates a {@link PolicyAnalysisResult} instance that holds maps that contain the usage of
-     * context schemas, contxt albums, events, and tasks by all policies in a policy model.
-     *
-     * @param policyModel the policy model to analyse
-     */
-    public PolicyAnalysisResult(final AxPolicyModel policyModel) {
-        for (final AxArtifactKey contextSchemaKey : policyModel.getSchemas().getSchemasMap().keySet()) {
-            contextSchemaUsage.put(contextSchemaKey, new TreeSet<>());
-        }
-
-        for (final Entry<AxArtifactKey, AxContextAlbum> contextAlbumEntry : policyModel.getAlbums().getAlbumsMap()
-                        .entrySet()) {
-            contextAlbumUsage.put(contextAlbumEntry.getKey(), new TreeSet<>());
-        }
-
-        for (final AxArtifactKey eventKey : policyModel.getEvents().getEventMap().keySet()) {
-            eventUsage.put(eventKey, new TreeSet<>());
-        }
-
-        for (final AxArtifactKey taskKey : policyModel.getTasks().getTaskMap().keySet()) {
-            taskUsage.put(taskKey, new TreeSet<>());
-        }
-    }
-
-    /**
-     * Gets the context schemas used by policies in the policy model.
-     *
-     * @return the context schemas used by policies in the policy model
-     */
-    public Map<AxArtifactKey, Set<AxKey>> getContextSchemaUsage() {
-        return contextSchemaUsage;
-    }
-
-    /**
-     * Gets the context albums used by policies in the policy model.
-     *
-     * @return the context albums used by policies in the policy model
-     */
-    public Map<AxArtifactKey, Set<AxKey>> getContextAlbumUsage() {
-        return contextAlbumUsage;
-    }
-
-    /**
-     * Gets the events used by policies in the policy model.
-     *
-     * @return the events used by policies in the policy model
-     */
-    public Map<AxArtifactKey, Set<AxKey>> getEventUsage() {
-        return eventUsage;
-    }
-
-    /**
-     * Gets the tasks used by policies in the policy model.
-     *
-     * @return the tasks used by policies in the policy model
-     */
-    public Map<AxArtifactKey, Set<AxKey>> getTaskUsage() {
-        return taskUsage;
-    }
-
-    /**
-     * Gets the context schemas used by policies in the policy model.
-     *
-     * @return the context schemas used by policies in the policy model
-     */
-    public Set<AxArtifactKey> getUsedContextSchemas() {
-        return getUsedKeySet(contextSchemaUsage);
-    }
-
-    /**
-     * Gets the context albums used by policies in the policy model.
-     *
-     * @return the context albums used by policies in the policy model
-     */
-    public Set<AxArtifactKey> getUsedContextAlbums() {
-        return getUsedKeySet(contextAlbumUsage);
-    }
-
-    /**
-     * Gets the events used by policies in the policy model.
-     *
-     * @return the events used by policies in the policy model
-     */
-    public Set<AxArtifactKey> getUsedEvents() {
-        return getUsedKeySet(eventUsage);
-    }
-
-    /**
-     * Gets the tasks used by policies in the policy model.
-     *
-     * @return the tasks used by policies in the policy model
-     */
-    public Set<AxArtifactKey> getUsedTasks() {
-        return getUsedKeySet(taskUsage);
-    }
-
-    /**
-     * Gets the context schemas in the policy model that were not used by any policies in the policy model.
-     *
-     * @return the unused context schemas
-     */
-    public Set<AxArtifactKey> getUnusedContextSchemas() {
-        return getUnusedKeySet(contextSchemaUsage);
-    }
-
-    /**
-     * Gets the context albums in the policy model that were not used by any policies in the policy model.
-     *
-     * @return the unused context albums
-     */
-    public Set<AxArtifactKey> getUnusedContextAlbums() {
-        return getUnusedKeySet(contextAlbumUsage);
-    }
-
-    /**
-     * Gets the events in the policy model that were not used by any policies in the policy model.
-     *
-     * @return the unused events
-     */
-    public Set<AxArtifactKey> getUnusedEvents() {
-        return getUnusedKeySet(eventUsage);
-    }
-
-    /**
-     * Gets the tasks in the policy model that were not used by any policies in the policy model.
-     *
-     * @return the unused tasks
-     */
-    public Set<AxArtifactKey> getUnusedTasks() {
-        return getUnusedKeySet(taskUsage);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-
-        builder.append(getUsageMapString("Context Schema usage", contextSchemaUsage));
-        builder.append(getUsageMapString("Context Album usage", contextAlbumUsage));
-        builder.append(getUsageMapString("Event usage", eventUsage));
-        builder.append(getUsageMapString("Task usage", taskUsage));
-
-        return builder.toString();
-    }
-
-    /**
-     * Gets the usage map string.
-     *
-     * @param header the header
-     * @param usageMap the usage map
-     * @return the usage map string
-     */
-    private String getUsageMapString(final String header, final Map<? extends AxKey, Set<AxKey>> usageMap) {
-        final StringBuilder builder = new StringBuilder();
-
-        builder.append(header);
-        builder.append('\n');
-        for (final Entry<? extends AxKey, Set<AxKey>> usageEntry : usageMap.entrySet()) {
-            builder.append(" ");
-            builder.append(usageEntry.getKey().getId());
-            if (usageEntry.getValue().isEmpty()) {
-                builder.append(" (unused)\n");
-                continue;
-            }
-
-            builder.append('\n');
-            for (final AxKey usageKey : usageEntry.getValue()) {
-                builder.append("  ");
-                builder.append(usageKey.getId());
-                builder.append("\n");
-            }
-        }
-        return builder.toString();
-    }
-
-    /**
-     * Gets the used key set.
-     *
-     * @param usageMap the usage map
-     * @return the used key set
-     */
-    private Set<AxArtifactKey> getUsedKeySet(final Map<AxArtifactKey, Set<AxKey>> usageMap) {
-        final Set<AxArtifactKey> usedKeySet = new TreeSet<>();
-
-        for (final Entry<AxArtifactKey, Set<AxKey>> usageEntry : usageMap.entrySet()) {
-            if (!usageEntry.getValue().isEmpty()) {
-                usedKeySet.add(usageEntry.getKey());
-            }
-        }
-
-        return usedKeySet;
-    }
-
-    /**
-     * Gets the unused key set.
-     *
-     * @param usageMap the usage map
-     * @return the unused key set
-     */
-    private Set<AxArtifactKey> getUnusedKeySet(final Map<AxArtifactKey, Set<AxKey>> usageMap) {
-        final Set<AxArtifactKey> usedKeySet = new TreeSet<>();
-
-        for (final Entry<AxArtifactKey, Set<AxKey>> usageEntry : usageMap.entrySet()) {
-            if (usageEntry.getValue().isEmpty()) {
-                usedKeySet.add(usageEntry.getKey());
-            }
-        }
-
-        return usedKeySet;
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyComparer.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyComparer.java
deleted file mode 100644
index 5a947c596..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyComparer.java
+++ /dev/null
@@ -1,46 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * 
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.handling;
-
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.policymodel.concepts.AxPolicies;
-import org.onap.policy.apex.model.policymodel.concepts.AxPolicy;
-import org.onap.policy.apex.model.utilities.comparison.KeyedMapComparer;
-import org.onap.policy.apex.model.utilities.comparison.KeyedMapDifference;
-
-/**
- * This class compares the policies in two {@link AxPolicies} objects and returns the differences.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-public class PolicyComparer {
-    /**
-     * Compare two {@link AxPolicies} objects, comparing their policy maps one after another.
-     *
-     * @param left the left policies
-     * @param right the right policies
-     * @return the difference
-     */
-    public KeyedMapDifference<AxArtifactKey, AxPolicy> compare(final AxPolicies left, final AxPolicies right) {
-        // Find the difference between the AxPolicy objects
-        return new KeyedMapComparer<AxArtifactKey, AxPolicy>().compareMaps(left.getPolicyMap(), right.getPolicyMap());
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyLogicReader.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyLogicReader.java
deleted file mode 100644
index f70068454..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyLogicReader.java
+++ /dev/null
@@ -1,142 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2020 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.handling;
-
-import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
-import org.onap.policy.apex.model.policymodel.concepts.AxLogic;
-import org.onap.policy.apex.model.policymodel.concepts.AxLogicReader;
-import org.onap.policy.apex.model.policymodel.concepts.PolicyRuntimeException;
-import org.onap.policy.common.utils.resources.ResourceUtils;
-import org.slf4j.ext.XLogger;
-import org.slf4j.ext.XLoggerFactory;
-
-/**
- * This class is used to read Task Logic and Task Selection Logic from files into a string. A
- * {@link PolicyLogicReader} can then be used to provide the logic on a {@link AxLogic} class
- * constructor.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-public class PolicyLogicReader implements AxLogicReader {
-    private static final String DOT_JAVA = ".java.";
-
-    private static final XLogger LOGGER = XLoggerFactory.getXLogger(PolicyModelSplitter.class);
-
-    // The path of the logic package
-    private String logicPackage = "";
-
-    // Flag indicating if default logic should be returned
-    private String defaultLogic;
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String getLogicPackage() {
-        return logicPackage;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxLogicReader setLogicPackage(final String incomingLogicPackage) {
-        this.logicPackage = incomingLogicPackage;
-        return this;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String getDefaultLogic() {
-        return defaultLogic;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxLogicReader setDefaultLogic(final String incomingDefaultLogic) {
-        this.defaultLogic = incomingDefaultLogic;
-        return this;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String readLogic(final AxLogic axLogic) {
-        // Java uses compiled logic, other executor types run scripts
-        if ("JAVA".equals(axLogic.getLogicFlavour())) {
-            // Check if we're using the default logic
-            if (defaultLogic != null) {
-                // Return the java class name for the default logic
-                return logicPackage + DOT_JAVA + defaultLogic;
-            } else {
-                // Return the java class name for the logic
-                if (axLogic.getKey().getParentLocalName().equals(AxKey.NULL_KEY_NAME)) {
-                    return logicPackage + DOT_JAVA + axLogic.getKey().getParentKeyName()
-                            + axLogic.getKey().getLocalName();
-                } else {
-                    return logicPackage + DOT_JAVA + axLogic.getKey().getParentKeyName()
-                            + axLogic.getKey().getParentLocalName()  + axLogic.getKey().getLocalName();
-                }
-            }
-        }
-        // Now, we read in the script
-
-        // Get the package name of the current package and convert dots to slashes for the file path
-        String fullLogicFilePath = logicPackage.replace(".", "/");
-
-        // Now, the logic should be in a sub directory for the logic executor type
-        fullLogicFilePath += "/" + axLogic.getLogicFlavour().toLowerCase();
-
-        // Check if we're using the default logic
-        if (defaultLogic != null) {
-            // Default logic
-            fullLogicFilePath += "/" + defaultLogic;
-        } else {
-            if (axLogic.getKey().getParentLocalName().equals(AxKey.NULL_KEY_NAME)) {
-                fullLogicFilePath += "/" + axLogic.getKey().getParentKeyName() + axLogic.getKey().getLocalName();
-            } else {
-                fullLogicFilePath += "/" + axLogic.getKey().getParentKeyName()
-                        + axLogic.getKey().getParentLocalName() + axLogic.getKey().getLocalName();
-            }
-        }
-
-        // Now get the type of executor to find the extension of the file
-        fullLogicFilePath += "." + axLogic.getLogicFlavour().toLowerCase();
-
-        final String logicString = ResourceUtils.getResourceAsString(fullLogicFilePath);
-
-        // Check if the logic was found
-        if (logicString == null || logicString.length() == 0) {
-            String errorMessage = "logic not found for logic \"" + fullLogicFilePath + "\"";
-            LOGGER.warn(errorMessage);
-            throw new PolicyRuntimeException(errorMessage);
-        }
-
-        // Return the right trimmed logic string
-        return logicString.replaceAll("\\s+$", "");
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyModelComparer.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyModelComparer.java
deleted file mode 100644
index f3bbdcbcf..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyModelComparer.java
+++ /dev/null
@@ -1,268 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * 
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.handling;
-
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKeyInfo;
-import org.onap.policy.apex.model.contextmodel.concepts.AxContextAlbum;
-import org.onap.policy.apex.model.contextmodel.concepts.AxContextSchema;
-import org.onap.policy.apex.model.eventmodel.concepts.AxEvent;
-import org.onap.policy.apex.model.policymodel.concepts.AxPolicy;
-import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
-import org.onap.policy.apex.model.policymodel.concepts.AxTask;
-import org.onap.policy.apex.model.utilities.comparison.KeyComparer;
-import org.onap.policy.apex.model.utilities.comparison.KeyDifference;
-import org.onap.policy.apex.model.utilities.comparison.KeyedMapComparer;
-import org.onap.policy.apex.model.utilities.comparison.KeyedMapDifference;
-
-/**
- * This class compares two policy models {@link AxPolicyModel} and holds the result of that comparison. It compares
- * policy models on their keys, their context schema differences, their event differences, their context album
- * differences, their task differences, their policy differences, and their key information differences.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-public class PolicyModelComparer {
-    // Comparison of policy model keys
-    private final KeyDifference<AxArtifactKey> policyModelsKeyDifference;
-
-    // Comparison of context schemas
-    private final KeyDifference<AxArtifactKey> contextSchemasKeyDifference;
-    private KeyedMapDifference<AxArtifactKey, AxContextSchema> contextSchemaCompareResult = new KeyedMapDifference<>();
-
-    // Comparison of events
-    private final KeyDifference<AxArtifactKey> eventsKeyDifference;
-    private KeyedMapDifference<AxArtifactKey, AxEvent> eventComparisonResult = new KeyedMapDifference<>();
-
-    // Comparison of context albums
-    private final KeyDifference<AxArtifactKey> contextAlbumKeyDifference;
-    private KeyedMapDifference<AxArtifactKey, AxContextAlbum> contextAlbumComparisonResult = new KeyedMapDifference<>();
-
-    // Comparison of tasks
-    private final KeyDifference<AxArtifactKey> tasksKeyDifference;
-    private KeyedMapDifference<AxArtifactKey, AxTask> taskComparisonResult = new KeyedMapDifference<>();
-
-    // Comparison of policies
-    private final KeyDifference<AxArtifactKey> policiesKeyDifference;
-    private KeyedMapDifference<AxArtifactKey, AxPolicy> policyComparisonResult = new KeyedMapDifference<>();
-
-    // Comparison of key information
-    private final KeyDifference<AxArtifactKey> keyInformationKeyDifference;
-    private KeyedMapDifference<AxArtifactKey, AxKeyInfo> keyInfoComparisonResult = new KeyedMapDifference<>();
-
-    /**
-     * The Constructor.
-     *
-     * @param left the left
-     * @param right the right
-     */
-    public PolicyModelComparer(final AxPolicyModel left, final AxPolicyModel right) {
-        // @formatter:off
-        policyModelsKeyDifference   = new KeyComparer<AxArtifactKey>().compareKeys(left.getKey(), right.getKey());
-        contextSchemasKeyDifference = new KeyComparer<AxArtifactKey>().compareKeys(left.getKey(), right.getKey());
-        eventsKeyDifference         = new KeyComparer<AxArtifactKey>().compareKeys(left.getKey(), right.getKey());
-        contextAlbumKeyDifference   = new KeyComparer<AxArtifactKey>().compareKeys(left.getKey(), right.getKey());
-        tasksKeyDifference          = new KeyComparer<AxArtifactKey>().compareKeys(left.getKey(), right.getKey());
-        policiesKeyDifference       = new KeyComparer<AxArtifactKey>().compareKeys(left.getKey(), right.getKey());
-        keyInformationKeyDifference = new KeyComparer<AxArtifactKey>().compareKeys(left.getKey(), right.getKey());
-
-        contextSchemaCompareResult = new KeyedMapComparer<AxArtifactKey, AxContextSchema>().compareMaps(
-                left.getSchemas().getSchemasMap(), right.getSchemas().getSchemasMap());
-        eventComparisonResult         = new KeyedMapComparer<AxArtifactKey, AxEvent>().compareMaps(
-                left.getEvents().getEventMap(), right.getEvents().getEventMap());
-        contextAlbumComparisonResult  = new KeyedMapComparer<AxArtifactKey, AxContextAlbum>().compareMaps(
-                left.getAlbums().getAlbumsMap(), right.getAlbums().getAlbumsMap());
-        taskComparisonResult          = new KeyedMapComparer<AxArtifactKey, AxTask>()
-                        .compareMaps(left.getTasks().getTaskMap(), right.getTasks().getTaskMap());
-        policyComparisonResult        = new KeyedMapComparer<AxArtifactKey, AxPolicy>().compareMaps(
-                left.getPolicies().getPolicyMap(), right.getPolicies().getPolicyMap());
-        keyInfoComparisonResult       = new KeyedMapComparer<AxArtifactKey, AxKeyInfo>().compareMaps(
-                left.getKeyInformation().getKeyInfoMap(), right.getKeyInformation().getKeyInfoMap());
-        // @formatter:on
-    }
-
-    /**
-     * Gets the difference between policy model keys on the two models.
-     *
-     * @return the difference between policy model keys
-     */
-    public KeyDifference<AxArtifactKey> getPolicyModelsKeyDifference() {
-        return policyModelsKeyDifference;
-    }
-
-    /**
-     * Gets the difference between context schema keys on the two models.
-     *
-     * @return the difference between context schema keys
-     */
-    public KeyDifference<AxArtifactKey> getContextSchemaKeyDifference() {
-        return contextSchemasKeyDifference;
-    }
-
-    /**
-     * Gets the difference between context schemas on the two models.
-     *
-     * @return the difference between context schemas
-     */
-    public KeyedMapDifference<AxArtifactKey, AxContextSchema> getContextSchemaComparisonResult() {
-        return contextSchemaCompareResult;
-    }
-
-    /**
-     * Gets the difference between event keys on the two models.
-     *
-     * @return the difference between event keys
-     */
-    public KeyDifference<AxArtifactKey> getEventKeyDifference() {
-        return eventsKeyDifference;
-    }
-
-    /**
-     * Gets the difference between the events on the two models.
-     *
-     * @return the difference between the events
-     */
-    public KeyedMapDifference<AxArtifactKey, AxEvent> getEventComparisonResult() {
-        return eventComparisonResult;
-    }
-
-    /**
-     * Gets the difference between context album keys on the two models.
-     *
-     * @return the difference between context album keys
-     */
-    public KeyDifference<AxArtifactKey> getContextAlbumKeyDifference() {
-        return contextAlbumKeyDifference;
-    }
-
-    /**
-     * Gets the difference between the context albums on the two models.
-     *
-     * @return the difference between the context albums
-     */
-    public KeyedMapDifference<AxArtifactKey, AxContextAlbum> getContextAlbumComparisonResult() {
-        return contextAlbumComparisonResult;
-    }
-
-    /**
-     * Gets the difference between task keys on the two models.
-     *
-     * @return the difference between task keys
-     */
-    public KeyDifference<AxArtifactKey> getTaskKeyDifference() {
-        return tasksKeyDifference;
-    }
-
-    /**
-     * Gets the difference between the tasks on the two models.
-     *
-     * @return the difference between the tasks
-     */
-    public KeyedMapDifference<AxArtifactKey, AxTask> getTaskComparisonResult() {
-        return taskComparisonResult;
-    }
-
-    /**
-     * Gets the difference between policy keys on the two models.
-     *
-     * @return the difference between policy keys
-     */
-    public KeyDifference<AxArtifactKey> getPolicykeyDifference() {
-        return policiesKeyDifference;
-    }
-
-    /**
-     * Gets the difference between the policies on the two models.
-     *
-     * @return the difference between the policies
-     */
-    public KeyedMapDifference<AxArtifactKey, AxPolicy> getPolicyComparisonResult() {
-        return policyComparisonResult;
-    }
-
-    /**
-     * Gets the difference between key information keys on the two models.
-     *
-     * @return the difference between key information keys
-     */
-    public KeyDifference<AxArtifactKey> getKeyInformationKeyDifference() {
-        return keyInformationKeyDifference;
-    }
-
-    /**
-     * Gets the difference between the key information on the two models.
-     *
-     * @return the difference between the key information
-     */
-    public KeyedMapDifference<AxArtifactKey, AxKeyInfo> getKeyInfoComparisonResult() {
-        return keyInfoComparisonResult;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        return asString(true, true);
-    }
-
-    /**
-     * As string.
-     *
-     * @param diffsOnly the diffs only
-     * @param keysOnly the keys only
-     * @return the string
-     */
-    public String asString(final boolean diffsOnly, final boolean keysOnly) {
-        final StringBuilder builder = new StringBuilder();
-
-        builder.append("****** policy map differences ******\n");
-        builder.append(policyModelsKeyDifference.asString(diffsOnly));
-
-        builder.append("*** context schema differences ***\n");
-        builder.append(contextSchemasKeyDifference.asString(diffsOnly));
-        builder.append(contextSchemaCompareResult.asString(diffsOnly, keysOnly));
-
-        builder.append("*** event differences ***\n");
-        builder.append(eventsKeyDifference.asString(diffsOnly));
-        builder.append(eventComparisonResult.asString(diffsOnly, keysOnly));
-
-        builder.append("*** context album differences ***\n");
-        builder.append(contextAlbumKeyDifference.asString(diffsOnly));
-        builder.append(contextAlbumComparisonResult.asString(diffsOnly, keysOnly));
-
-        builder.append("*** task differences ***\n");
-        builder.append(tasksKeyDifference.asString(diffsOnly));
-        builder.append(taskComparisonResult.asString(diffsOnly, keysOnly));
-
-        builder.append("*** policy differences ***\n");
-        builder.append(policiesKeyDifference.asString(diffsOnly));
-        builder.append(policyComparisonResult.asString(diffsOnly, keysOnly));
-
-        builder.append("*** key information differences ***\n");
-        builder.append(keyInformationKeyDifference.asString(diffsOnly));
-        builder.append(keyInfoComparisonResult.asString(diffsOnly, keysOnly));
-
-        builder.append("***********************************\n");
-
-        return builder.toString();
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyModelMerger.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyModelMerger.java
deleted file mode 100644
index ae0dda814..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyModelMerger.java
+++ /dev/null
@@ -1,183 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix Foundation.
- *  Modifications Copyright (C) 2020-2021 Bell Canada. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.handling;
-
-import java.util.Map;
-import java.util.Map.Entry;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxKeyInfo;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.handling.ApexModelException;
-import org.onap.policy.apex.model.contextmodel.concepts.AxContextAlbum;
-import org.onap.policy.apex.model.contextmodel.concepts.AxContextSchema;
-import org.onap.policy.apex.model.eventmodel.concepts.AxEvent;
-import org.onap.policy.apex.model.policymodel.concepts.AxPolicy;
-import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
-import org.onap.policy.apex.model.policymodel.concepts.AxTask;
-import org.slf4j.ext.XLogger;
-import org.slf4j.ext.XLoggerFactory;
-
-/**
- * Helper class used to merge information from two policy models together into a single policy
- * model.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-public final class PolicyModelMerger {
-    private static final XLogger LOGGER = XLoggerFactory.getXLogger(PolicyModelMerger.class);
-
-    /**
-     * Private constructor used to prevent sub class instantiation.
-     */
-    private PolicyModelMerger() {
-    }
-
-    /**
-     * Get a merged policy model with information from two policy models merged into a larger policy
-     * model.
-     *
-     * @param leftPolicyModel the source Apex Model
-     * @param rightPolicyModel the policies to include in sub policy model
-     * @param useLeftOnMatches if true, uses concepts from the left model if concepts with common
-     *        keys are found, if false it uses the concepts from the right model
-     * @param failOnDuplicateKeys whether to fail or not on the occurence of duplicate concept keys
-     * @return the new Destination Model
-     * @throws ApexModelException on model transfer errors
-     */
-    public static AxPolicyModel getMergedPolicyModel(final AxPolicyModel leftPolicyModel,
-        final AxPolicyModel rightPolicyModel, final boolean useLeftOnMatches, final boolean failOnDuplicateKeys)
-        throws ApexModelException {
-        return getMergedPolicyModel(leftPolicyModel, rightPolicyModel, useLeftOnMatches, false, failOnDuplicateKeys);
-    }
-
-    /**
-     * Get a merged policy model with information from two policy models merged into a larger policy
-     * model.
-     *
-     * @param leftPolicyModel the source Apex Model
-     * @param rightPolicyModel the policies to include in sub policy model
-     * @param useLeftOnMatches if true, uses concepts from the left model if concepts with common
-     *        keys are found, if false it uses the concepts from the right model
-     * @param ignoreInvalidSource Ignore errors on the source model, do the best you can
-     * @param failOnDuplicateKeys whether to fail or not on the occurence of duplicate concept keys
-     * @return the new Destination Model
-     * @throws ApexModelException on model transfer errors
-     */
-    public static AxPolicyModel getMergedPolicyModel(final AxPolicyModel leftPolicyModel,
-        final AxPolicyModel rightPolicyModel, final boolean useLeftOnMatches, final boolean ignoreInvalidSource,
-        final boolean failOnDuplicateKeys) throws ApexModelException {
-
-        if (!ignoreInvalidSource) {
-            validateModels(leftPolicyModel, "left");
-            validateModels(rightPolicyModel, "right");
-        }
-
-        // The new policy model uses the favoured copy side as its base
-        final AxPolicyModel mergedPolicyModel =
-            (useLeftOnMatches ? new AxPolicyModel(leftPolicyModel) : new AxPolicyModel(rightPolicyModel));
-
-        // The Compared to policy model is the unfavoured side
-        final AxPolicyModel copyFromPolicyModel =
-            (useLeftOnMatches ? new AxPolicyModel(rightPolicyModel) : new AxPolicyModel(leftPolicyModel));
-
-        Map<AxArtifactKey, AxKeyInfo> mergedKeyInfoMap = mergedPolicyModel.getKeyInformation().getKeyInfoMap();
-        Map<AxArtifactKey, AxContextSchema> mergedSchemasMap = mergedPolicyModel.getSchemas().getSchemasMap();
-        Map<AxArtifactKey, AxEvent> mergedEventMap = mergedPolicyModel.getEvents().getEventMap();
-        Map<AxArtifactKey, AxContextAlbum> mergedAlbumsMap = mergedPolicyModel.getAlbums().getAlbumsMap();
-        Map<AxArtifactKey, AxTask> mergedTaskMap = mergedPolicyModel.getTasks().getTaskMap();
-        Map<AxArtifactKey, AxPolicy> mergedPolicyMap = mergedPolicyModel.getPolicies().getPolicyMap();
-
-        Map<AxArtifactKey, AxKeyInfo> copyOverKeyInfoMap = copyFromPolicyModel.getKeyInformation().getKeyInfoMap();
-        Map<AxArtifactKey, AxContextSchema> copyOverSchemasMap = copyFromPolicyModel.getSchemas().getSchemasMap();
-        Map<AxArtifactKey, AxEvent> copyOverEventMap = copyFromPolicyModel.getEvents().getEventMap();
-        Map<AxArtifactKey, AxContextAlbum> copyOverAlbumsMap = copyFromPolicyModel.getAlbums().getAlbumsMap();
-        Map<AxArtifactKey, AxTask> copyOverTaskMap = copyFromPolicyModel.getTasks().getTaskMap();
-        Map<AxArtifactKey, AxPolicy> copyOverPolicyMap = copyFromPolicyModel.getPolicies().getPolicyMap();
-
-        if (failOnDuplicateKeys) {
-            StringBuilder errorMessage = new StringBuilder();
-            checkForDuplicateItem(mergedSchemasMap, copyOverSchemasMap, errorMessage, "schema");
-            checkForDuplicateItem(mergedEventMap, copyOverEventMap, errorMessage, "event");
-            checkForDuplicateItem(mergedAlbumsMap, copyOverAlbumsMap, errorMessage, "album");
-            checkForDuplicateItem(mergedTaskMap, copyOverTaskMap, errorMessage, "task");
-            checkForDuplicateItem(mergedPolicyMap, copyOverPolicyMap, errorMessage, "policy");
-            if (errorMessage.length() > 0) {
-                throw new ApexModelException(errorMessage.toString());
-            }
-        } else {
-            //  Remove entries that already exist
-            copyOverKeyInfoMap.keySet().removeIf(mergedKeyInfoMap::containsKey);
-            copyOverSchemasMap.keySet().removeIf(mergedSchemasMap::containsKey);
-            copyOverEventMap.keySet().removeIf(mergedEventMap::containsKey);
-            copyOverAlbumsMap.keySet().removeIf(mergedAlbumsMap::containsKey);
-            copyOverTaskMap.keySet().removeIf(mergedTaskMap::containsKey);
-            copyOverPolicyMap.keySet().removeIf(mergedPolicyMap::containsKey);
-        }
-        // Now add all the concepts that must be copied over
-        mergedKeyInfoMap.putAll(copyOverKeyInfoMap);
-        mergedSchemasMap.putAll(copyOverSchemasMap);
-        mergedEventMap.putAll(copyOverEventMap);
-        mergedAlbumsMap.putAll(copyOverAlbumsMap);
-        mergedTaskMap.putAll(copyOverTaskMap);
-        mergedPolicyMap.putAll(copyOverPolicyMap);
-
-        // That's it, return the model
-        return mergedPolicyModel;
-    }
-
-    /**
-     * Method to check for duplicate items.
-     *
-     * @param <V>  the concept type
-     * @param mergedItemsMap the map to which items are copied
-     * @param copyOverItemsMap the map from where items are copied
-     * @param errorMessage error message in case of any duplicate concepts
-     * @param itemType the type of concept to specify distinguished error messages
-     */
-    public static <V> void checkForDuplicateItem(Map<AxArtifactKey, V> mergedItemsMap,
-        Map<AxArtifactKey, V> copyOverItemsMap, StringBuilder errorMessage, String itemType) {
-        for (Entry<AxArtifactKey, V> entry : copyOverItemsMap.entrySet()) {
-            V item = mergedItemsMap.get(entry.getKey());
-            // same item with different definitions cannot occur in multiple policies
-            if (null != item) {
-                if (item.equals(entry.getValue())) {
-                    LOGGER.info("Same {} - {} is used by multiple policies.", itemType, entry.getKey().getId());
-                } else {
-                    errorMessage.append("\n Same " + itemType + " - ").append(entry.getKey().getId())
-                        .append(" with different definitions used in different policies");
-                }
-            }
-        }
-    }
-
-    private static void validateModels(AxPolicyModel policyModel, String position) throws ApexModelException {
-        // Validate the model
-        final AxValidationResult validationResult = new AxValidationResult();
-        policyModel.validate(validationResult);
-        if (!validationResult.isValid()) {
-            String message = position + " model is invalid: " + validationResult.toString();
-            LOGGER.warn(message);
-            throw new ApexModelException(message);
-        }
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyModelSplitter.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyModelSplitter.java
deleted file mode 100644
index 1f1c27a83..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/PolicyModelSplitter.java
+++ /dev/null
@@ -1,165 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.model.policymodel.handling;
-
-import java.util.Collection;
-import java.util.Set;
-import java.util.TreeSet;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.handling.ApexModelException;
-import org.onap.policy.apex.model.policymodel.concepts.AxPolicy;
-import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
-import org.slf4j.ext.XLogger;
-import org.slf4j.ext.XLoggerFactory;
-
-/**
- * Helper class used to extract information from a policy model into a policy model that is a subset of the original
- * policy model.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-public final class PolicyModelSplitter {
-    private static final XLogger LOGGER = XLoggerFactory.getXLogger(PolicyModelSplitter.class);
-
-    /**
-     * Private constructor used to prevent sub class instantiation.
-     */
-    private PolicyModelSplitter() {
-        // Private constructor to block subclassing
-    }
-
-    /**
-     * Get a sub policy model with only the information required for the specified policies from a larger policy model.
-     *
-     * @param sourcePolicyModel the source Apex Model
-     * @param subPolicies the policies to include in sub policy model
-     * @return the new Destination Model
-     * @throws ApexModelException on model transfer errors
-     */
-    public static AxPolicyModel getSubPolicyModel(final AxPolicyModel sourcePolicyModel,
-            final Collection<AxArtifactKey> subPolicies) throws ApexModelException {
-        return getSubPolicyModel(sourcePolicyModel, subPolicies, false);
-    }
-
-    /**
-     * Get a sub policy model with only the information required for the specified policies from a larger policy model.
-     *
-     * @param sourcePolicyModel the source Apex Model
-     * @param subPolicies the policies to include in sub policy model
-     * @param ignoreInvalidSource Ignore errors on the source model, do the best you can
-     * @return the new Destination Model
-     * @throws ApexModelException on model transfer errors
-     */
-    public static AxPolicyModel getSubPolicyModel(final AxPolicyModel sourcePolicyModel,
-            final Collection<AxArtifactKey> subPolicies, final boolean ignoreInvalidSource) throws ApexModelException {
-        // Validate the source model
-        if (!ignoreInvalidSource) {
-            final AxValidationResult sourceValidationResult = new AxValidationResult();
-            sourcePolicyModel.validate(sourceValidationResult);
-            if (!sourceValidationResult.isValid()) {
-                String message = "source model is invalid: " + sourceValidationResult.toString();
-                LOGGER.warn(message);
-                throw new ApexModelException(message);
-            }
-        }
-
-        // The new policy model
-        final AxPolicyModel newPolicyModel = new AxPolicyModel(sourcePolicyModel.getKey());
-        newPolicyModel.getKeyInformation().setKey(sourcePolicyModel.getKeyInformation().getKey());
-        newPolicyModel.getKeyInformation().getKeyInfoMap().put(sourcePolicyModel.getKey(),
-                sourcePolicyModel.getKeyInformation().getKeyInfoMap().get(sourcePolicyModel.getKey()));
-        newPolicyModel.getKeyInformation().getKeyInfoMap().put(sourcePolicyModel.getKeyInformation().getKey(),
-                sourcePolicyModel.getKeyInformation().getKeyInfoMap()
-                        .get(sourcePolicyModel.getKeyInformation().getKey()));
-
-        //  Get the events, tasks, context maps, and data types used by each policy
-        final Set<AxArtifactKey> contextSchemaSet = new TreeSet<>();
-        final Set<AxArtifactKey> eventSet = new TreeSet<>();
-        final Set<AxArtifactKey> contextAlbumSet = new TreeSet<>();
-        final Set<AxArtifactKey> taskSet = new TreeSet<>();
-
-        newPolicyModel.getPolicies().setKey(sourcePolicyModel.getPolicies().getKey());
-        newPolicyModel.getKeyInformation().getKeyInfoMap().put(sourcePolicyModel.getPolicies().getKey(),
-                sourcePolicyModel.getKeyInformation().getKeyInfoMap().get(sourcePolicyModel.getPolicies().getKey()));
-        for (final AxArtifactKey subPolicyKey : subPolicies) {
-            final AxPolicy subPolicy = sourcePolicyModel.getPolicies().getPolicyMap().get(subPolicyKey);
-            if (subPolicy == null) {
-                LOGGER.warn("source sub policy not found: {}", subPolicyKey);
-                continue;
-            }
-
-            // Transfer the policy across
-            newPolicyModel.getPolicies().getPolicyMap().put(subPolicyKey, subPolicy);
-            newPolicyModel.getKeyInformation().getKeyInfoMap().put(subPolicyKey,
-                    sourcePolicyModel.getKeyInformation().getKeyInfoMap().get(subPolicyKey));
-
-            // Get the references for this policy
-            final PolicyAnalysisResult analysisResult = new PolicyAnalyser().analyse(sourcePolicyModel, subPolicy);
-            contextSchemaSet.addAll(analysisResult.getUsedContextSchemas());
-            eventSet.addAll(analysisResult.getUsedEvents());
-            contextAlbumSet.addAll(analysisResult.getUsedContextAlbums());
-            taskSet.addAll(analysisResult.getUsedTasks());
-
-        }
-
-        // Now add all the referenced data types, events, context maps, and tasks to the policy
-        // model
-        newPolicyModel.getSchemas().setKey(sourcePolicyModel.getSchemas().getKey());
-        newPolicyModel.getKeyInformation().getKeyInfoMap().put(sourcePolicyModel.getSchemas().getKey(),
-                sourcePolicyModel.getKeyInformation().getKeyInfoMap().get(sourcePolicyModel.getSchemas().getKey()));
-        for (final AxArtifactKey contextSchemaKey : contextSchemaSet) {
-            newPolicyModel.getSchemas().getSchemasMap().put(contextSchemaKey,
-                    sourcePolicyModel.getSchemas().getSchemasMap().get(contextSchemaKey));
-            newPolicyModel.getKeyInformation().getKeyInfoMap().put(contextSchemaKey,
-                    sourcePolicyModel.getKeyInformation().getKeyInfoMap().get(contextSchemaKey));
-        }
-        newPolicyModel.getEvents().setKey(sourcePolicyModel.getEvents().getKey());
-        newPolicyModel.getKeyInformation().getKeyInfoMap().put(sourcePolicyModel.getEvents().getKey(),
-                sourcePolicyModel.getKeyInformation().getKeyInfoMap().get(sourcePolicyModel.getEvents().getKey()));
-        for (final AxArtifactKey eventKey : eventSet) {
-            newPolicyModel.getEvents().getEventMap().put(eventKey,
-                    sourcePolicyModel.getEvents().getEventMap().get(eventKey));
-            newPolicyModel.getKeyInformation().getKeyInfoMap().put(eventKey,
-                    sourcePolicyModel.getKeyInformation().getKeyInfoMap().get(eventKey));
-        }
-        newPolicyModel.getAlbums().setKey(sourcePolicyModel.getAlbums().getKey());
-        newPolicyModel.getKeyInformation().getKeyInfoMap().put(sourcePolicyModel.getAlbums().getKey(),
-                sourcePolicyModel.getKeyInformation().getKeyInfoMap().get(sourcePolicyModel.getAlbums().getKey()));
-        for (final AxArtifactKey contextAlbumKey : contextAlbumSet) {
-            newPolicyModel.getAlbums().getAlbumsMap().put(contextAlbumKey,
-                    sourcePolicyModel.getAlbums().getAlbumsMap().get(contextAlbumKey));
-            newPolicyModel.getKeyInformation().getKeyInfoMap().put(contextAlbumKey,
-                    sourcePolicyModel.getKeyInformation().getKeyInfoMap().get(contextAlbumKey));
-        }
-        newPolicyModel.getTasks().setKey(sourcePolicyModel.getTasks().getKey());
-        newPolicyModel.getKeyInformation().getKeyInfoMap().put(sourcePolicyModel.getTasks().getKey(),
-                sourcePolicyModel.getKeyInformation().getKeyInfoMap().get(sourcePolicyModel.getTasks().getKey()));
-        for (final AxArtifactKey taskKey : taskSet) {
-            newPolicyModel.getTasks().getTaskMap().put(taskKey, sourcePolicyModel.getTasks().getTaskMap().get(taskKey));
-            newPolicyModel.getKeyInformation().getKeyInfoMap().put(taskKey,
-                    sourcePolicyModel.getKeyInformation().getKeyInfoMap().get(taskKey));
-        }
-
-        // That's it, return the model
-        return newPolicyModel;
-    }
-}
diff --git a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/package-info.java b/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/package-info.java
deleted file mode 100644
index f84befd26..000000000
--- a/model/policy-model/src/main/java/org/onap/policy/apex/model/policymodel/handling/package-info.java
+++ /dev/null
@@ -1,26 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * 
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-/**
- * Contains utility classes used to handle APEX polcies and policy models.
- * 
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-package org.onap.policy.apex.model.policymodel.handling;