net.liftmodules.transaction.EntityManagerSynchronization.scala Maven / Gradle / Ivy
/*
* Copyright 2009-2013 WorldWide Conferencing, LLC
*
* 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 net.liftmodules
package transaction
import net.liftweb.common.Loggable
import javax.transaction.{ TransactionManager, Status, Synchronization, SystemException}
import javax.persistence.EntityManager
/**
* EntityManager JTA synchronization class.
*
* Registered in method: [joinTransaction].
*
* @author Jonas Bonér
*/
class EntityManagerSynchronization(
val em: EntityManager,
val tm: TransactionManager,
val closeAtTxCompletion: Boolean)
extends Synchronization with Loggable {
def beforeCompletion = {
try {
val status = tm.getStatus
if (status != Status.STATUS_ROLLEDBACK &&
status != Status.STATUS_ROLLING_BACK &&
status != Status.STATUS_MARKED_ROLLBACK) {
logger.debug("Flushing EntityManager...")
em.flush // flush EntityManager on success
}
} catch {
case e: SystemException => throw new RuntimeException(e)
}
}
def afterCompletion(status: Int) = {
val status = tm.getStatus
if (closeAtTxCompletion) {
em.close
}
if (status == Status.STATUS_ROLLEDBACK ||
status == Status.STATUS_ROLLING_BACK ||
status == Status.STATUS_MARKED_ROLLBACK) {
TransactionContext.closeEntityManager // destroy EntityManager on rollback
}
}
}