/*
* Copyright 2013 The Sculptor Project Team, including the original
* author or authors.
*
* 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.
*/
package org.sculptor.framework.persistence;
import javax.ejb.EJBTransactionRolledbackException;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TransactionRequiredException;
/**
* This interceptor flushes the {@link EntityManager} after normal return.
* <p>
* We have to flush eagerly in order to detect OptimisticLockingException and do
* proper rollback.
*
* @author Patrik Nordwall
*/
public class JpaFlushEagerInterceptor {
@PersistenceContext
private EntityManager entityManager;
@AroundInvoke
public Object invoke(InvocationContext context) throws Exception {
Object result = context.proceed();
if (entityManager != null) {
try {
entityManager.flush();
} catch (EJBTransactionRolledbackException ignore) {
// already marked for rollback
} catch (TransactionRequiredException ignore) {
// already marked for rollback
}
}
return result;
}
}