2 * ============LICENSE_START=======================================================
3 * feature-session-persistence
4 * ================================================================================
5 * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.drools.persistence;
23 import javax.persistence.EntityManager;
24 import javax.persistence.EntityManagerFactory;
25 import org.slf4j.Logger;
26 import org.slf4j.LoggerFactory;
28 public class JpaDroolsSessionConnector implements DroolsSessionConnector {
30 private static Logger logger = LoggerFactory.getLogger(JpaDroolsSessionConnector.class);
32 private final EntityManagerFactory emf;
34 public JpaDroolsSessionConnector(EntityManagerFactory emf) {
39 public DroolsSession get(String sessName) {
41 EntityManager em = emf.createEntityManager();
42 DroolsSessionEntity entity = null;
44 try (EntityMgrTrans trans = new EntityMgrTrans(em)) {
46 entity = em.find(DroolsSessionEntity.class, sessName);
58 public void replace(DroolsSession sess) {
59 String sessName = sess.getSessionName();
61 logger.info("replace: Entering and manually updating session name= {}", sessName);
63 EntityManager em = emf.createEntityManager();
65 try (EntityMgrTrans trans = new EntityMgrTrans(em)) {
67 if (!update(em, sess)) {
74 logger.info("replace: Exiting");
78 * Adds a session to the persistent store.
80 * @param em entity manager
81 * @param sess session to be added
83 private void add(EntityManager em, DroolsSession sess) {
84 logger.info("add: Inserting session id={}", sess.getSessionId());
86 DroolsSessionEntity ent = new DroolsSessionEntity(sess.getSessionName(), sess.getSessionId());
92 * Updates a session, if it exists within the persistent store.
94 * @param em entity manager
95 * @param sess session data to be persisted
96 * @return {@code true} if a record was updated, {@code false} if it was not found
98 private boolean update(EntityManager em, DroolsSession sess) {
100 DroolsSessionEntity session = em.find(DroolsSessionEntity.class, sess.getSessionName());
101 if (session == null) {
105 logger.info("update: Updating session id to {}", sess.getSessionId());
106 session.setSessionId(sess.getSessionId());