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>

7 files changed, 0 insertions, 1724 deletions

diff --git a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEvent.java b/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEvent.java
deleted file mode 100644
index a4c0e9db1..000000000
--- a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEvent.java
+++ /dev/null
@@ -1,547 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019-2020,2022 Nordix Foundation.
- *  Modifications Copyright (C) 2022 Bell Canada.
- * ================================================================================
- * 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.eventmodel.concepts;
-
-import com.google.common.base.Strings;
-import com.google.gson.annotations.SerializedName;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Set;
-import java.util.SortedMap;
-import java.util.TreeMap;
-import java.util.TreeSet;
-import org.apache.commons.lang3.EnumUtils;
-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.AxToscaPolicyProcessingStatus;
-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 an Apex event. An {@link AxEvent} is used to kick off execution of policies in Apex and is emitted
- * by policies when they complete execution. In addition, Apex uses {@link AxEvent} instances internally to pass
- * control from one Apex state to the next during execution.
- *
- * <p>The {@link AxArtifactKey} of an event uniquely identifies it in an Apex system and the name field in the key is
- * the name of the event.
- *
- * <p>Each {@link AxEvent} has a name space, which is usually set to identify the domain of application of an event. For
- * example a 4G cell power event might have the name space {@code org.onap.radio.4g} and the name {@code PowerEvent}.
- * The source and target of the event are reserved to hold an identifier that defines the sender and receiver of an
- * event respectively. The definition and structure of these fields is reserved for future use and their use by
- * applications is currently not recommended.
- *
- * <p>The parameters that an event has are defined as a map of {@link AxField} instances.
- *
- * <p>Validation checks that the event key is valid. If name space is a blank string, a warning is issued. Blank source
- * or target fields result in observations being issued. An event may not have any parameters. If it has parameters, the
- * name and value of each parameter entry is checked to ensure they are not null. Then the local name of each parameter
- * is checked to ensure it matches the event parameter key on the event. Finally, the parent key of each parameter is
- * checked to ensure it matches the event key.
- */
-public class AxEvent extends AxConcept {
-    private static final long serialVersionUID = -1460388382582984269L;
-
-    private static final String WHITESPACE_REGEXP = "\\s+$";
-
-    /** The key of the event, unique in the Apex system. */
-    // CHECKSTYLE:OFF: checkstyle:VisibilityMonitor
-    protected AxArtifactKey key;
-    // CHECKSTYLE:ON: checkstyle:VisibilityMonitor
-
-    private String nameSpace;
-    private String source;
-    private String target;
-
-    @SerializedName("parameter")
-    private Map<String, AxField> parameterMap;
-    private String toscaPolicyState;
-
-    /**
-     * The default constructor creates an event with a null artifact key. The event name space, source, and target are
-     * all defined as empty strings and the parameter map is initialized as an empty map.
-     */
-    public AxEvent() {
-        this(new AxArtifactKey());
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxEvent(final AxEvent copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The default constructor creates an event with the given artifact key. The event name space, source, and target
-     * are all defined as empty strings and the parameter map is initialized as an empty map.
-     *
-     * @param key the key of the event
-     */
-    public AxEvent(final AxArtifactKey key) {
-        this(key, "", "", "", new TreeMap<>(), "");
-    }
-
-    /**
-     * This constructor creates an event with the given artifact key and name space. The event source, and target are
-     * all defined as empty strings and the parameter map is initialized as an empty map.
-     *
-     * @param key the key of the event
-     * @param nameSpace the name space of the event
-     */
-    public AxEvent(final AxArtifactKey key, final String nameSpace) {
-        this(key, nameSpace, "", "", new TreeMap<>(), "");
-    }
-
-    /**
-     * This constructor creates an event with the given artifact key, name space, source and target. The parameter map
-     * is initialized as an empty map.
-     *
-     * @param key the key of the event
-     * @param nameSpace the name space of the event
-     * @param source the source of the event
-     * @param target the target of the event
-     */
-    public AxEvent(final AxArtifactKey key, final String nameSpace, final String source, final String target) {
-        this(key, nameSpace, source, target, new TreeMap<>(), "");
-    }
-
-    /**
-     * This constructor creates an event with all its fields defined.
-     *
-     * @param key the key of the event
-     * @param nameSpace the name space of the event
-     * @param source the source of the event
-     * @param target the target of the event
-     * @param parameterMap the map of parameters that the event has
-     * @param toscaPolicyState the TOSCA policy processing status that event is flagged with
-     */
-    public AxEvent(final AxArtifactKey key, final String nameSpace, final String source, final String target,
-                    final SortedMap<String, AxField> parameterMap, final String toscaPolicyState) {
-        super();
-        Assertions.argumentNotNull(key, "key may not be null");
-        Assertions.argumentNotNull(nameSpace, "nameSpace may not be null");
-        Assertions.argumentNotNull(source, "source may not be null");
-        Assertions.argumentNotNull(target, "target may not be null");
-        Assertions.argumentNotNull(parameterMap, "parameterMap may not be null");
-
-        this.key = key;
-        this.nameSpace = nameSpace;
-        this.source = source;
-        this.target = target;
-        this.parameterMap = parameterMap;
-        this.toscaPolicyState = toscaPolicyState;
-    }
-
-    /**
-     * This method checks that an event has all the fields in the {@code otherFieldSet} set defined on it.
-     *
-     * @param otherFieldSet the set of fields to check for existence on this event
-     * @return true, if all the {@code otherFieldSet} fields are defined on this event
-     */
-    public boolean hasFields(final Set<AxField> otherFieldSet) {
-        return parameterMap.values().containsAll(otherFieldSet);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void buildReferences() {
-        for (final AxField parameter : parameterMap.values()) {
-            parameter.getKey().setParentArtifactKey(key);
-        }
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxArtifactKey getKey() {
-        return key;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = key.getKeys();
-
-        for (final AxField field : parameterMap.values()) {
-            keyList.addAll(field.getKeys());
-        }
-        return keyList;
-    }
-
-    /**
-     * Sets the key of the event.
-     *
-     * @param key the key of the event
-     */
-    public void setKey(final AxArtifactKey key) {
-        Assertions.argumentNotNull(key, "key may not be null");
-        this.key = key;
-
-        for (final AxField parameter : parameterMap.values()) {
-            parameter.getKey().setParentArtifactKey(key);
-        }
-    }
-
-    /**
-     * Gets the name space of the event.
-     *
-     * @return the name space of the event
-     */
-    public String getNameSpace() {
-        return nameSpace;
-    }
-
-    /**
-     * Sets the name space of the event.
-     *
-     * @param nameSpace the name space of the event
-     */
-    public void setNameSpace(final String nameSpace) {
-        Assertions.argumentNotNull(nameSpace, "nameSpace may not be null");
-        this.nameSpace = nameSpace.trim();
-    }
-
-    /**
-     * Gets the source of the event.
-     *
-     * @return the source of the event
-     */
-    public String getSource() {
-        return source;
-    }
-
-    /**
-     * Sets the source of the event.
-     *
-     * @param source the source of the event
-     */
-    public void setSource(final String source) {
-        Assertions.argumentNotNull(source, "source may not be null");
-        this.source = source.trim();
-    }
-
-    /**
-     * Gets the target of the event.
-     *
-     * @return the target of the event
-     */
-    public String getTarget() {
-        return target;
-    }
-
-    /**
-     * Sets the target of the event.
-     *
-     * @param target the target of the event
-     */
-    public void setTarget(final String target) {
-        Assertions.argumentNotNull(target, "target may not be null");
-        this.target = target.trim();
-    }
-
-    /**
-     * Gets the event parameter map.
-     *
-     * @return the event parameter map
-     */
-    public Map<String, AxField> getParameterMap() {
-        return parameterMap;
-    }
-
-    /**
-     * Gets the fields defined on the event as a set.
-     *
-     * @return the fields defined on the event as a set
-     */
-    public Set<AxField> getFields() {
-        return new TreeSet<>(parameterMap.values());
-    }
-
-    /**
-     * Sets the event parameter map, containing all the fields of the event.
-     *
-     * @param parameterMap the event parameter map
-     */
-    public void setParameterMap(final Map<String, AxField> parameterMap) {
-        Assertions.argumentNotNull(parameterMap, "parameterMap may not be null");
-        this.parameterMap = parameterMap;
-    }
-
-    /**
-     * Gets the TOSCA policy processing status from the event.
-     *
-     * @return the TOSCA policy processing status
-     */
-    public String getToscaPolicyState() {
-        return toscaPolicyState;
-    }
-
-    /**
-     * Sets the TOSCA policy processing status on the event.
-     *
-     * @param toscaPolicyState the TOSCA policy processing status
-     */
-    public void setToscaPolicyState(String toscaPolicyState) {
-        this.toscaPolicyState = toscaPolicyState;
-    }
-
-    /**
-     * {@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 (nameSpace.replaceAll(WHITESPACE_REGEXP, "").length() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.WARNING,
-                            "nameSpace on event is blank"));
-        }
-
-        if (source.replaceAll(WHITESPACE_REGEXP, "").length() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.OBSERVATION,
-                            "source on event is blank"));
-        }
-
-        if (target.replaceAll(WHITESPACE_REGEXP, "").length() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.OBSERVATION,
-                            "target on event is blank"));
-        }
-
-        for (final Entry<String, AxField> eventParameterEntry : parameterMap.entrySet()) {
-            if (eventParameterEntry.getKey() == null || eventParameterEntry.getKey().equals(AxKey.NULL_KEY_NAME)) {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                "key on parameter " + eventParameterEntry.getKey() + " may not be the null key"));
-            } else if (eventParameterEntry.getValue() == null) {
-                result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                "value on parameter " + eventParameterEntry.getKey() + " may not be null"));
-            } else {
-                result = validateEventParameters(eventParameterEntry, result);
-            }
-        }
-
-        if (!Strings.isNullOrEmpty(toscaPolicyState)
-                && !EnumUtils.isValidEnum(AxToscaPolicyProcessingStatus.class, toscaPolicyState)) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                    "toscaPolicyState on event is not a valid enum. Valid values are: "
-                            + Arrays.asList(AxToscaPolicyProcessingStatus.values())));
-        }
-
-        return result;
-    }
-
-    /**
-     * Validate an event parameter entry.
-     *
-     * @param eventParameterEntry the event parameter entry
-     * @param result the validation result to append to
-     * @return The validation result
-     */
-    private AxValidationResult validateEventParameters(final Entry<String, AxField> eventParameterEntry,
-                    final AxValidationResult result) {
-        if (!eventParameterEntry.getKey().equals(eventParameterEntry.getValue().getKey().getLocalName())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "key on parameter " + eventParameterEntry.getKey()
-                                            + " does not equal parameter field local name "
-                                            + eventParameterEntry.getValue().getKey().getLocalName()));
-        }
-
-        if (!eventParameterEntry.getValue().getKey().getParentArtifactKey().equals(key)) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "parent key on parameter field " + eventParameterEntry.getValue().getKey()
-                                            + " does not equal event key"));
-        }
-
-        return eventParameterEntry.getValue().validate(result);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        key.clean();
-        nameSpace = nameSpace.trim();
-        source = source.trim();
-        target = target.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(",nameSpace=");
-        builder.append(nameSpace);
-        builder.append(",source=");
-        builder.append(source);
-        builder.append(",target=");
-        builder.append(target);
-        builder.append(",parameter=");
-        builder.append(parameterMap);
-        builder.append(",toscaPolicyState=");
-        builder.append(toscaPolicyState);
-        builder.append(")");
-        return builder.toString();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxConcept copyTo(final AxConcept targetObject) {
-        Assertions.argumentNotNull(targetObject, "targetObject may not be null");
-
-        final Object copyObject = targetObject;
-        Assertions.instanceOf(copyObject, AxEvent.class);
-
-        final AxEvent copy = (AxEvent) copyObject;
-
-        final Map<String, AxField> newParameterMap = new TreeMap<>();
-        for (final Entry<String, AxField> eventParameterMapEntry : parameterMap.entrySet()) {
-            newParameterMap.put(eventParameterMapEntry.getKey(), new AxField(eventParameterMapEntry.getValue()));
-        }
-        copy.setParameterMap(newParameterMap);
-
-        copy.setKey(new AxArtifactKey(key));
-        copy.setNameSpace(nameSpace);
-        copy.setSource(source);
-        copy.setTarget(target);
-        copy.setToscaPolicyState(toscaPolicyState);
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + nameSpace.hashCode();
-        result = prime * result + source.hashCode();
-        result = prime * result + target.hashCode();
-        result = prime * result + parameterMap.hashCode();
-        result = prime * result + toscaPolicyState.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 AxEvent other = (AxEvent) obj;
-        if (!key.equals(other.key)) {
-            return false;
-        }
-        if (!nameSpace.equals(other.nameSpace)) {
-            return false;
-        }
-        if (!source.equals(other.source)) {
-            return false;
-        }
-        if (!target.equals(other.target)) {
-            return false;
-        }
-        if (!toscaPolicyState.equals(other.toscaPolicyState)) {
-            return false;
-        }
-        return parameterMap.equals(other.parameterMap);
-    }
-
-    /**
-     * {@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 AxEvent other = (AxEvent) otherObj;
-        if (!key.equals(other.key)) {
-            return key.compareTo(other.key);
-        }
-        if (!nameSpace.equals(other.nameSpace)) {
-            return nameSpace.compareTo(other.nameSpace);
-        }
-        if (!source.equals(other.source)) {
-            return source.compareTo(other.source);
-        }
-        if (!target.equals(other.target)) {
-            return target.compareTo(other.target);
-        }
-        if (!parameterMap.equals(other.parameterMap)) {
-            return (parameterMap.hashCode() - other.parameterMap.hashCode());
-        }
-        if (!toscaPolicyState.equals(other.toscaPolicyState)) {
-            return toscaPolicyState.compareTo(other.toscaPolicyState);
-        }
-
-        return 0;
-    }
-}
diff --git a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEventModel.java b/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEventModel.java
deleted file mode 100644
index b91712c9d..000000000
--- a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEventModel.java
+++ /dev/null
@@ -1,276 +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.eventmodel.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.AxKeyInformation;
-import org.onap.policy.apex.model.basicmodel.concepts.AxModel;
-import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
-import org.onap.policy.apex.model.basicmodel.service.ModelService;
-import org.onap.policy.apex.model.contextmodel.concepts.AxContextSchemas;
-import org.onap.policy.common.utils.validation.Assertions;
-
-/**
- * A container class for an Apex event model. This class is a container class that allows an Apex model to be
- * constructed that contains events and context and the key information for those events and context. The model contains
- * schema definitions and the definitions of events that use those schemas.
- *
- * <p>Validation runs {@link AxModel} validation on the model. In addition, the {@link AxContextSchemas} and
- * {@link AxEvents} validation is run on the context schemas and events in the model.
- */
-public class AxEventModel extends AxModel {
-    private static final long serialVersionUID = 8800599637708309945L;
-
-    private AxContextSchemas schemas;
-    private AxEvents events;
-
-    /**
-     * The Default Constructor creates a {@link AxEventModel} object with a null artifact key and creates an empty event
-     * model.
-     */
-    public AxEventModel() {
-        this(new AxArtifactKey());
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxEventModel(final AxEventModel copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The Key Constructor creates a {@link AxEventModel} object with the given artifact key and creates an empty event
-     * model.
-     *
-     * @param key the event model key
-     */
-    public AxEventModel(final AxArtifactKey key) {
-        this(key, new AxContextSchemas(new AxArtifactKey(key.getName() + "_Schemas", key.getVersion())),
-                new AxKeyInformation(new AxArtifactKey(key.getName() + "_KeyInfo", key.getVersion())),
-                new AxEvents(new AxArtifactKey(key.getName() + "_Events", key.getVersion())));
-    }
-
-    /**
-     * Constructor that initiates a {@link AxEventModel} with all its fields.
-     *
-     * @param key the event model key
-     * @param schemas the schemas for events in the event model
-     * @param keyInformation the key information for context schemas and events in the event model
-     * @param events the events in the event model
-     */
-    public AxEventModel(final AxArtifactKey key, final AxContextSchemas schemas, final AxKeyInformation keyInformation,
-            final AxEvents events) {
-        super(key, keyInformation);
-        Assertions.argumentNotNull(events, "events may not be null");
-
-        this.schemas = schemas;
-        this.events = events;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void register() {
-        super.register();
-        ModelService.registerModel(AxContextSchemas.class, getSchemas());
-        ModelService.registerModel(AxEvents.class, getEvents());
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = super.getKeys();
-
-        keyList.addAll(schemas.getKeys());
-        keyList.addAll(events.getKeys());
-
-        return keyList;
-    }
-
-    /**
-     * Gets the context schemas.
-     *
-     * @return the context schemas
-     */
-    public AxContextSchemas getSchemas() {
-        return schemas;
-    }
-
-    /**
-     * Sets the context schemas.
-     *
-     * @param schemas the context schemas
-     */
-    public void setSchemas(final AxContextSchemas schemas) {
-        Assertions.argumentNotNull(schemas, "schemas may not be null");
-        this.schemas = schemas;
-    }
-
-    /**
-     * Gets the events from the model.
-     *
-     * @return the events
-     */
-    public AxEvents getEvents() {
-        return events;
-    }
-
-    /**
-     * Sets the events in the model.
-     *
-     * @param events the events
-     */
-    public void setEvents(final AxEvents events) {
-        Assertions.argumentNotNull(events, "events may not be null");
-        this.events = events;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxValidationResult validate(final AxValidationResult resultIn) {
-        AxValidationResult result = resultIn;
-
-        result = super.validate(result);
-        result = schemas.validate(result);
-        return events.validate(result);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        super.clean();
-        schemas.clean();
-        events.clean();
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public String toString() {
-        final StringBuilder builder = new StringBuilder();
-        builder.append(this.getClass().getSimpleName());
-        builder.append(":(");
-        builder.append(super.toString());
-        builder.append(",schemas=");
-        builder.append(schemas);
-        builder.append(",events=");
-        builder.append(events);
-        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, AxEventModel.class);
-
-        final AxEventModel copy = ((AxEventModel) copyObject);
-        super.copyTo(targetObject);
-        copy.setSchemas(new AxContextSchemas(schemas));
-        copy.setEvents(new AxEvents(events));
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + super.hashCode();
-        result = prime * result + schemas.hashCode();
-        result = prime * result + events.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 AxEventModel other = (AxEventModel) obj;
-        if (!super.equals(other)) {
-            return false;
-        }
-        if (!schemas.equals(other.schemas)) {
-            return false;
-        }
-        return events.equals(other.events);
-    }
-
-    /**
-     * {@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 AxEventModel other = (AxEventModel) otherObj;
-        if (!super.equals(other)) {
-            return super.compareTo(other);
-        }
-        if (!schemas.equals(other.schemas)) {
-            return schemas.compareTo(other.schemas);
-        }
-        return events.compareTo(other.events);
-    }
-}
diff --git a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEvents.java b/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEvents.java
deleted file mode 100644
index aac1562de..000000000
--- a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEvents.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.eventmodel.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 an event container and holds a map of the events for an entire Apex model. All Apex models that use
- * events must have an {@link AxEvents} field. The {@link AxEvents} class implements the helper methods of the
- * {@link AxConceptGetter} interface to allow {@link AxEvents} 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 events are defined in the
- * container. Each event 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 event entry is then validated individually.
- */
-public class AxEvents extends AxConcept implements AxConceptGetter<AxEvent> {
-    private static final long serialVersionUID = 4290442590545820316L;
-
-    private AxArtifactKey key;
-    private Map<AxArtifactKey, AxEvent> eventMap;
-
-    /**
-     * The Default Constructor creates a {@link AxEvents} object with a null artifact key and creates an empty event
-     * map.
-     */
-    public AxEvents() {
-        this(new AxArtifactKey());
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxEvents(final AxEvents copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * The Key Constructor creates a {@link AxEvents} object with the given artifact key and creates an empty event map.
-     *
-     * @param key the event container key
-     */
-    public AxEvents(final AxArtifactKey key) {
-        this(key, new TreeMap<>());
-    }
-
-    /**
-     * This Constructor creates an event container with all of its fields defined.
-     *
-     * @param key the event container key
-     * @param eventMap the events to be stored in the event container
-     */
-    public AxEvents(final AxArtifactKey key, final Map<AxArtifactKey, AxEvent> eventMap) {
-        super();
-        Assertions.argumentNotNull(key, "key may not be null");
-        Assertions.argumentNotNull(eventMap, "eventMap may not be null");
-
-        this.key = key;
-        this.eventMap = new TreeMap<>();
-        this.eventMap.putAll(eventMap);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxArtifactKey getKey() {
-        return key;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = key.getKeys();
-
-        for (final AxEvent event : eventMap.values()) {
-            keyList.addAll(event.getKeys());
-        }
-
-        return keyList;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void buildReferences() {
-        eventMap.values().stream().forEach(event -> event.buildReferences());
-    }
-
-    /**
-     * Sets the key of the event container.
-     *
-     * @param key the event container key
-     */
-    public void setKey(final AxArtifactKey key) {
-        Assertions.argumentNotNull(key, "key may not be null");
-        this.key = key;
-    }
-
-    /**
-     * Gets the event map containing the events in the event container.
-     *
-     * @return the event map with all the events in the event container
-     */
-    public Map<AxArtifactKey, AxEvent> getEventMap() {
-        return eventMap;
-    }
-
-    /**
-     * Sets the event map containing the events in the event container.
-     *
-     * @param eventMap the event map containing the events in the event container
-     */
-    public void setEventMap(final Map<AxArtifactKey, AxEvent> eventMap) {
-        Assertions.argumentNotNull(eventMap, "eventMap may not be null");
-        this.eventMap = new TreeMap<>();
-        this.eventMap.putAll(eventMap);
-    }
-
-    /**
-     * {@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 (eventMap.size() == 0) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "eventMap may not be empty"));
-        } else {
-            for (final Entry<AxArtifactKey, AxEvent> eventEntry : eventMap.entrySet()) {
-                if (eventEntry.getKey().equals(AxArtifactKey.getNullKey())) {
-                    result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                    "key on event entry " + eventEntry.getKey() + " may not be the null key"));
-                } else if (eventEntry.getValue() == null) {
-                    result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                    "value on event entry " + eventEntry.getKey() + " may not be null"));
-                } else {
-                    if (!eventEntry.getKey().equals(eventEntry.getValue().getKey())) {
-                        result.addValidationMessage(
-                                        new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                                                        "key on event entry key " + eventEntry.getKey()
-                                                                        + " does not equal event value key "
-                                                                        + eventEntry.getValue().getKey()));
-                    }
-
-                    result = eventEntry.getValue().validate(result);
-                }
-            }
-        }
-
-        return result;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        key.clean();
-        for (final Entry<AxArtifactKey, AxEvent> eventEntry : eventMap.entrySet()) {
-            eventEntry.getKey().clean();
-            eventEntry.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(",eventMap=");
-        builder.append(eventMap);
-        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, AxEvents.class);
-
-        final AxEvents copy = (AxEvents) copyObject;
-        copy.setKey(new AxArtifactKey(key));
-        final Map<AxArtifactKey, AxEvent> newEventMap = new TreeMap<>();
-        for (final Entry<AxArtifactKey, AxEvent> eventMapEntry : eventMap.entrySet()) {
-            newEventMap.put(new AxArtifactKey(eventMapEntry.getKey()), new AxEvent(eventMapEntry.getValue()));
-        }
-        copy.setEventMap(newEventMap);
-
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + eventMap.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 AxEvents other = (AxEvents) obj;
-        if (!key.equals(other.key)) {
-            return false;
-        }
-        return eventMap.equals(other.eventMap);
-    }
-
-    /**
-     * {@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 AxEvents other = (AxEvents) otherObj;
-        if (!key.equals(other.key)) {
-            return key.compareTo(other.key);
-        }
-        if (!eventMap.equals(other.eventMap)) {
-            return (eventMap.hashCode() - other.eventMap.hashCode());
-        }
-
-        return 0;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxEvent get(final AxArtifactKey conceptKey) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxEvent>) eventMap).get(conceptKey);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxEvent get(final String conceptKeyName) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxEvent>) eventMap).get(conceptKeyName);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxEvent get(final String conceptKeyName, final String conceptKeyVersion) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxEvent>) eventMap).get(conceptKeyName,
-                        conceptKeyVersion);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public Set<AxEvent> getAll(final String conceptKeyName) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxEvent>) eventMap).getAll(conceptKeyName);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public Set<AxEvent> getAll(final String conceptKeyName, final String conceptKeyVersion) {
-        return new AxConceptGetterImpl<>((NavigableMap<AxArtifactKey, AxEvent>) eventMap).getAll(conceptKeyName,
-                        conceptKeyVersion);
-    }
-}
diff --git a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxField.java b/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxField.java
deleted file mode 100644
index 26511c9d1..000000000
--- a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxField.java
+++ /dev/null
@@ -1,347 +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.eventmodel.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;
-
-/**
- * In Apex, a field is an input or output parameter to or from a concept. For example, the parameters of an event are
- * fields and the input and output of a task is defined as a collection of fields.
- *
- * <p>A field has an {@link AxReferenceKey} key that defines its name and parent, and a {@link AxArtifactKey} key to a
- * context schema that defines the structure of the data atom that holds the value of the field. Fields can be specified
- * as being optional but are mandatory by default.
- *
- * <p>Validation checks that the field key and the field schema reference key are not null.
- */
-public class AxField extends AxConcept {
-    private static final String KEY_MAY_NOT_BE_NULL = "key may not be null";
-    private static final String FIELD_SCHEMA_KEY_MAY_NOT_BE_NULL = "fieldSchemaKey may not be null";
-
-    private static final long serialVersionUID = -6443016863162692288L;
-
-    private static final int HASH_PRIME_0 = 1231;
-    private static final int HASH_PRIME_1 = 1237;
-
-    private AxReferenceKey key;
-    private AxArtifactKey fieldSchemaKey;
-    private boolean optional;
-
-    /**
-     * The default constructor creates a field with a null artifact and schema key.
-     */
-    public AxField() {
-        this(new AxReferenceKey());
-        optional = false;
-    }
-
-    /**
-     * The default constructor creates a field with the given artifact key and a null schema key.
-     *
-     * @param key the field key
-     */
-    public AxField(final AxReferenceKey key) {
-        this(key, new AxArtifactKey());
-    }
-
-    /**
-     * Copy constructor.
-     *
-     * @param copyConcept the concept to copy from
-     */
-    public AxField(final AxField copyConcept) {
-        super(copyConcept);
-    }
-
-    /**
-     * Constructor to create the field with both its keys defined.
-     *
-     * @param key the field key
-     * @param fieldSchemaKey the key of the field schema to use for this field
-     */
-    public AxField(final AxReferenceKey key, final AxArtifactKey fieldSchemaKey) {
-        super();
-        Assertions.argumentNotNull(key, KEY_MAY_NOT_BE_NULL);
-        Assertions.argumentNotNull(fieldSchemaKey, FIELD_SCHEMA_KEY_MAY_NOT_BE_NULL);
-
-        this.key = key;
-        this.fieldSchemaKey = fieldSchemaKey;
-    }
-
-    /**
-     * Constructor to create the field with all its fields defined.
-     *
-     * @param key the field key
-     * @param fieldSchemaKey the key of the field schema to use for this field
-     * @param optional true if this field is optional
-     */
-    public AxField(final AxReferenceKey key, final AxArtifactKey fieldSchemaKey, final boolean optional) {
-        super();
-        Assertions.argumentNotNull(key, KEY_MAY_NOT_BE_NULL);
-        Assertions.argumentNotNull(fieldSchemaKey, FIELD_SCHEMA_KEY_MAY_NOT_BE_NULL);
-
-        this.key = key;
-        this.fieldSchemaKey = fieldSchemaKey;
-        this.optional = optional;
-    }
-
-    /**
-     * Constructor to create the field with the local name of its reference key defined and its schema key defined.
-     *
-     * @param localName the local name of the field reference key
-     * @param fieldSchemaKey the key of the field schema to use for this field
-     */
-    public AxField(final String localName, final AxArtifactKey fieldSchemaKey) {
-        super();
-        Assertions.argumentNotNull(localName, "localName may not be null");
-        Assertions.argumentNotNull(fieldSchemaKey, FIELD_SCHEMA_KEY_MAY_NOT_BE_NULL);
-
-        key = new AxReferenceKey();
-        key.setLocalName(localName);
-        this.fieldSchemaKey = fieldSchemaKey;
-    }
-
-    /**
-     * Constructor to create the field with the local name of its reference key defined, its schema key and optionality
-     * defined.
-     *
-     * @param localName the local name of the field reference key
-     * @param fieldSchemaKey the key of the field schema to use for this field
-     * @param optional true if this field is optional
-     */
-    public AxField(final String localName, final AxArtifactKey fieldSchemaKey, final boolean optional) {
-        super();
-        Assertions.argumentNotNull(localName, "localName may not be null");
-        Assertions.argumentNotNull(fieldSchemaKey, FIELD_SCHEMA_KEY_MAY_NOT_BE_NULL);
-
-        key = new AxReferenceKey();
-        key.setLocalName(localName);
-        this.fieldSchemaKey = fieldSchemaKey;
-        this.optional = optional;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public AxReferenceKey getKey() {
-        return key;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public List<AxKey> getKeys() {
-        final List<AxKey> keyList = key.getKeys();
-        keyList.add(new AxKeyUse(fieldSchemaKey));
-        return keyList;
-    }
-
-    /**
-     * Sets the reference key of the field.
-     *
-     * @param key the field reference key
-     */
-    public void setKey(final AxReferenceKey key) {
-        Assertions.argumentNotNull(key, KEY_MAY_NOT_BE_NULL);
-        this.key = key;
-    }
-
-    /**
-     * Gets the key of the field schema.
-     *
-     * @return the field schema key
-     */
-    public AxArtifactKey getSchema() {
-        return fieldSchemaKey;
-    }
-
-    /**
-     * Sets the key of the field schema.
-     *
-     * @param schema the field schema key
-     */
-    public void setSchema(final AxArtifactKey schema) {
-        Assertions.argumentNotNull(schema, "schema may not be null");
-        this.fieldSchemaKey = schema;
-    }
-
-    /**
-     * Gets the optionality of the field.
-     *
-     * @return the field optional flag
-     */
-    public boolean getOptional() {
-        return optional;
-    }
-
-    /**
-     * Sets the optionality of the field.
-     *
-     * @param optional the optionality of the field
-     */
-    public void setOptional(final boolean optional) {
-        this.optional = optional;
-    }
-
-    /**
-     * {@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 (fieldSchemaKey.equals(AxArtifactKey.getNullKey())) {
-            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
-                            "fieldSchemaKey is a null key: " + fieldSchemaKey));
-        }
-        return fieldSchemaKey.validate(result);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void clean() {
-        key.clean();
-        fieldSchemaKey.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(",fieldSchemaKey=");
-        builder.append(fieldSchemaKey);
-        builder.append(",optional=");
-        builder.append(optional);
-        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, AxField.class);
-
-        final AxField copy = ((AxField) copyObject);
-        copy.setKey(new AxReferenceKey(key));
-        copy.setSchema(new AxArtifactKey(fieldSchemaKey));
-        copy.setOptional(optional);
-        return copy;
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + key.hashCode();
-        result = prime * result + fieldSchemaKey.hashCode();
-        result = prime * result + (optional ? HASH_PRIME_0 : HASH_PRIME_1);
-        return result;
-    }
-
-    /*
-     * (nonJavadoc)
-     *
-     * @see org.onap.policy.apex.model.basicmodel.concepts.AxConcept#equals(java.lang.Object)
-     */
-    @Override
-    public boolean equals(final Object obj) {
-        if (obj == null) {
-            return false;
-        }
-        if (this == obj) {
-            return true;
-        }
-
-        if (!(obj instanceof AxField)) {
-            return false;
-        }
-
-        final AxField other = (AxField) obj;
-        if (!key.getLocalName().equals(other.key.getLocalName())) {
-            return false;
-        }
-        if (optional != other.optional) {
-            return false;
-        }
-        return fieldSchemaKey.equals(other.fieldSchemaKey);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public int compareTo(final AxConcept otherObj) {
-        if (otherObj == null) {
-            return 1;
-        }
-        if (this == otherObj) {
-            return 0;
-        }
-        if (!(otherObj instanceof AxField)) {
-            return this.hashCode() - otherObj.hashCode();
-        }
-
-        final AxField other = (AxField) otherObj;
-        if (!key.getLocalName().equals(other.key.getLocalName())) {
-            return key.getLocalName().compareTo(other.key.getLocalName());
-        }
-        if (optional != other.optional) {
-            return (optional ? 1 : -1);
-        }
-        return fieldSchemaKey.compareTo(other.fieldSchemaKey);
-    }
-}
diff --git a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxInputField.java b/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxInputField.java
deleted file mode 100644
index 6155c7186..000000000
--- a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxInputField.java
+++ /dev/null
@@ -1,88 +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.eventmodel.concepts;
-
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-
-/**
- * This class specializes the {@link AxField} class for use as input fields on events.
- */
-public class AxInputField extends AxField {
-    private static final long serialVersionUID = 2090324845463750391L;
-
-    /**
-     * The default constructor creates a field with a null artifact and schema key.
-     */
-    public AxInputField() {
-        super();
-    }
-
-    /**
-     * The default constructor creates a field with the given artifact key and a null schema key.
-     *
-     * @param key the field key
-     */
-    public AxInputField(final AxReferenceKey key) {
-        super(key);
-    }
-
-    /**
-     * Constructor to create the field with both its keys defined.
-     *
-     * @param key the field key
-     * @param fieldSchemaKey the key of the field schema to use for this field
-     */
-    public AxInputField(final AxReferenceKey key, final AxArtifactKey fieldSchemaKey) {
-        super(key, fieldSchemaKey);
-    }
-
-    /**
-     * Constructor to create the field with both its keys defined and optional flag specified.
-     *
-     * @param key the field key
-     * @param fieldSchemaKey the key of the field schema to use for this field
-     * @param optional true if the task field is optional, false otherwise
-     */
-    public AxInputField(final AxReferenceKey key, final AxArtifactKey fieldSchemaKey, final boolean optional) {
-        super(key, fieldSchemaKey, optional);
-    }
-
-    /**
-     * Constructor to create the field with the local name of its reference key defined and its schema key defined.
-     *
-     * @param localName the local name of the field reference key
-     * @param fieldSchemaKey the key of the field schema to use for this field
-     */
-    public AxInputField(final String localName, final AxArtifactKey fieldSchemaKey) {
-        super(localName, fieldSchemaKey);
-    }
-
-    /**
-     * Copy constructor, create an input field as a copy of another input field.
-     *
-     * @param field the input field to copy from
-     */
-    public AxInputField(final AxInputField field) {
-        super(new AxReferenceKey(field.getKey()), new AxArtifactKey(field.getSchema()), field.getOptional());
-    }
-}
diff --git a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxOutputField.java b/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxOutputField.java
deleted file mode 100644
index 7f3437617..000000000
--- a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxOutputField.java
+++ /dev/null
@@ -1,88 +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.eventmodel.concepts;
-
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
-
-/**
- * This class specializes the {@link AxField} class for use as output fields on events.
- */
-public class AxOutputField extends AxField {
-    private static final long serialVersionUID = 2090324845463750391L;
-
-    /**
-     * The default constructor creates a field with a null artifact and schema key.
-     */
-    public AxOutputField() {
-        super();
-    }
-
-    /**
-     * The default constructor creates a field with the given artifact key and a null schema key.
-     *
-     * @param key the field key
-     */
-    public AxOutputField(final AxReferenceKey key) {
-        super(key);
-    }
-
-    /**
-     * Constructor to create the field with both its keys defined.
-     *
-     * @param key the field key
-     * @param fieldSchemaKey the key of the field schema to use for this field
-     */
-    public AxOutputField(final AxReferenceKey key, final AxArtifactKey fieldSchemaKey) {
-        super(key, fieldSchemaKey);
-    }
-
-    /**
-     * Constructor to create the field with both its keys defined and optional flag specified.
-     *
-     * @param key the field key
-     * @param fieldSchemaKey the key of the field schema to use for this field
-     * @param optional true if the task field is optional, false otherwise
-     */
-    public AxOutputField(final AxReferenceKey key, final AxArtifactKey fieldSchemaKey, final boolean optional) {
-        super(key, fieldSchemaKey, optional);
-    }
-
-    /**
-     * Constructor to create the field with the local name of its reference key defined and its schema key defined.
-     *
-     * @param localName the local name of the field reference key
-     * @param fieldSchemaKey the key of the field schema to use for this field
-     */
-    public AxOutputField(final String localName, final AxArtifactKey fieldSchemaKey) {
-        super(localName, fieldSchemaKey);
-    }
-
-    /**
-     * Copy constructor, create an output field as a copy of another output field.
-     *
-     * @param field the output field to copy from
-     */
-    public AxOutputField(final AxOutputField field) {
-        super(new AxReferenceKey(field.getKey()), new AxArtifactKey(field.getSchema()), field.getOptional());
-    }
-}
diff --git a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/package-info.java b/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/package-info.java
deleted file mode 100644
index 414d22d0e..000000000
--- a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/package-info.java
+++ /dev/null
@@ -1,27 +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 manage events in APEX. It defines the main Apex concepts of events and fields.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-package org.onap.policy.apex.model.eventmodel.concepts;