1 files changed, 195 insertions, 0 deletions
diff --git a/models/src/main/java/org/onap/policy/clamp/controlloop/models/controlloop/persistence/provider/ParticipantProvider.java b/models/src/main/java/org/onap/policy/clamp/controlloop/models/controlloop/persistence/provider/ParticipantProvider.java
new file mode 100644
index 000000000..e82956f93
--- /dev/null
+++ b/models/src/main/java/org/onap/policy/clamp/controlloop/models/controlloop/persistence/provider/ParticipantProvider.java
@@ -0,0 +1,195 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2021 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.clamp.controlloop.models.controlloop.persistence.provider;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+import javax.ws.rs.core.Response;
+import lombok.NonNull;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.Participant;
+import org.onap.policy.clamp.controlloop.models.controlloop.persistence.concepts.JpaParticipant;
+import org.onap.policy.common.parameters.BeanValidationResult;
+import org.onap.policy.models.base.PfConceptKey;
+import org.onap.policy.models.base.PfModelException;
+import org.onap.policy.models.base.PfModelRuntimeException;
+import org.onap.policy.models.provider.PolicyModelsProviderParameters;
+import org.onap.policy.models.provider.impl.AbstractModelsProvider;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaTypedEntityFilter;
+
+/**
+ * This class provides information on participant concepts in the database to callers.
+ */
+public class ParticipantProvider extends AbstractModelsProvider {
+    /**
+     * Create a provider for participants.
+     *
+     * @param parameters the parameters for database access
+     * @throws PfModelException on initiation errors
+     */
+    public ParticipantProvider(@NonNull PolicyModelsProviderParameters parameters) throws PfModelException {
+        super(parameters);
+        this.init();
+    }
+
+    /**
+     * Get participants.
+     *
+     * @param name the name of the participant to get, null to get all participants
+     * @param version the version of the participant to get, null to get all participants
+     * @return the participants found
+     * @throws PfModelException on errors getting participants
+     */
+    public List<Participant> getParticipants(final String name, final String version) throws PfModelException {
+
+        return asParticipantList(getPfDao().getFiltered(JpaParticipant.class, name, version));
+    }
+
+    /**
+     * Get filtered participants.
+     *
+     * @param filter the filter for the participants to get
+     * @return the participants found
+     * @throws PfModelException on errors getting policies
+     */
+    public List<Participant> getFilteredParticipants(@NonNull final ToscaTypedEntityFilter<Participant> filter) {
+
+        return filter.filter(asParticipantList(
+                getPfDao().getFiltered(JpaParticipant.class, filter.getName(), filter.getVersion())));
+    }
+
+    /**
+     * Creates participants.
+     *
+     * @param participants a specification of the participants to create
+     * @return the participants created
+     * @throws PfModelException on errors creating participants
+     */
+    public List<Participant> createParticipants(@NonNull final List<Participant> participants) throws PfModelException {
+
+        BeanValidationResult validationResult = new BeanValidationResult("participants", participants);
+
+        for (Participant participant : participants) {
+            JpaParticipant jpaParticipant = new JpaParticipant();
+            jpaParticipant.fromAuthorative(participant);
+
+            validationResult.addResult(jpaParticipant.validate("participant"));
+        }
+
+        if (!validationResult.isValid()) {
+            throw new PfModelRuntimeException(Response.Status.BAD_REQUEST, validationResult.getResult());
+        }
+
+        for (Participant participant : participants) {
+            JpaParticipant jpaParticipant = new JpaParticipant();
+            jpaParticipant.fromAuthorative(participant);
+
+            getPfDao().create(jpaParticipant);
+        }
+
+        // Return the created participants
+        List<Participant> returnParticipants = new ArrayList<>(participants.size());
+
+        for (Participant participant : participants) {
+            JpaParticipant jpaParticipant = getPfDao().get(JpaParticipant.class,
+                    new PfConceptKey(participant.getName(), participant.getVersion()));
+            returnParticipants.add(jpaParticipant.toAuthorative());
+        }
+
+        return returnParticipants;
+    }
+
+    /**
+     * Updates participants.
+     *
+     * @param participants a specification of the participants to update
+     * @return the participants updated
+     * @throws PfModelException on errors updating participants
+     */
+    public List<Participant> updateParticipants(@NonNull final List<Participant> participants) throws PfModelException {
+
+        BeanValidationResult validationResult = new BeanValidationResult("participants", participants);
+
+        for (Participant participant : participants) {
+            JpaParticipant jpaParticipant = new JpaParticipant();
+            jpaParticipant.fromAuthorative(participant);
+
+            validationResult.addResult(jpaParticipant.validate("participant"));
+        }
+
+        if (!validationResult.isValid()) {
+            throw new PfModelRuntimeException(Response.Status.BAD_REQUEST, validationResult.getResult());
+        }
+
+        for (Participant participant : participants) {
+            JpaParticipant jpaParticipant = new JpaParticipant();
+            jpaParticipant.fromAuthorative(participant);
+
+            getPfDao().update(jpaParticipant);
+        }
+
+        // Return the created participants
+        List<Participant> returnParticipants = new ArrayList<>(participants.size());
+
+        for (Participant participant : participants) {
+            JpaParticipant jpaParticipant = getPfDao().get(JpaParticipant.class,
+                    new PfConceptKey(participant.getName(), participant.getVersion()));
+            returnParticipants.add(jpaParticipant.toAuthorative());
+        }
+
+        return returnParticipants;
+    }
+
+    /**
+     * Delete a participant.
+     *
+     * @param name the name of the participant to delete
+     * @param version the version of the participant to get
+     * @return the participant deleted
+     * @throws PfModelException on errors deleting participants
+     */
+    public Participant deleteParticipant(@NonNull final String name, @NonNull final String version) {
+
+        PfConceptKey participantKey = new PfConceptKey(name, version);
+
+        JpaParticipant jpaDeleteParticipant = getPfDao().get(JpaParticipant.class, participantKey);
+
+        if (jpaDeleteParticipant == null) {
+            String errorMessage =
+                    "delete of participant \"" + participantKey.getId() + "\" failed, participant does not exist";
+            throw new PfModelRuntimeException(Response.Status.BAD_REQUEST, errorMessage);
+        }
+
+        getPfDao().delete(jpaDeleteParticipant);
+
+        return jpaDeleteParticipant.toAuthorative();
+    }
+
+    /**
+     * Convert JPA participant list to an authorative participant list.
+     *
+     * @param foundParticipants the list to convert
+     * @return the authorative list
+     */
+    private List<Participant> asParticipantList(List<JpaParticipant> jpaParticipantList) {
+        return jpaParticipantList.stream().map(JpaParticipant::toAuthorative).collect(Collectors.toList());
+    }
+}