/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.
*/
package org.jbpm.process.audit.strategy;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.TransactionRequiredException;
import javax.transaction.Status;
import javax.transaction.UserTransaction;
import org.jbpm.process.audit.JPAWorkingMemoryDbLogger;
import org.kie.api.runtime.KieSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This strategy is used by instances that are<ul>
* <li>used outside the {@link KieSession}</li>
* <li>use their own {@link EntityManager} instance per operation</li>
* </ul>
*/
public class StandaloneLocalStrategy implements PersistenceStrategy {
protected EntityManagerFactory emf;
public StandaloneLocalStrategy(EntityManagerFactory emf) {
this.emf = emf;
}
@Override
public EntityManager getEntityManager() {
return emf.createEntityManager();
}
@Override
public Object joinTransaction(EntityManager em) {
em.getTransaction().begin();
return true;
}
@Override
public void leaveTransaction(EntityManager em, Object transaction) {
em.getTransaction().commit();
em.close();
}
@Override
public void dispose() {
// NEVER close the emf, you don't know what it is also being used for!
emf = null;
}
}