/*
* Copyright (c) 2009, 2010, 2011, 2012, B3log Team
*
* 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.b3log.latke.repository.jpa;
import javax.persistence.EntityTransaction;
import javax.persistence.PersistenceException;
import javax.persistence.RollbackException;
import org.b3log.latke.repository.Transaction;
/**
* Entity transaction implementation.
*
* @author <a href="mailto:DL88250@gmail.com">Liang Ding</a>
* @version 1.0.0.0, Oct 11, 2011
*/
public final class EntityTransactionImpl implements EntityTransaction {
/**
* Transaction.
*/
private Transaction transaction;
/**
* Constructs a entity transaction with the specified transaction.
*
* @param transaction the specified transaction
*/
public EntityTransactionImpl(final Transaction transaction) {
this.transaction = transaction;
}
@Override
public void begin() {
if (transaction.isActive()) {
throw new IllegalStateException("This transaction is active");
}
}
@Override
public void commit() {
if (!transaction.isActive()) {
throw new IllegalStateException("This transaction is inactive");
}
try {
transaction.commit();
} catch (final Exception e) {
throw new RollbackException("Commit failed", e);
}
}
@Override
public void rollback() {
if (!transaction.isActive()) {
throw new IllegalStateException("This transaction is inactive");
}
try {
transaction.rollback();
} catch (final Exception e) {
throw new PersistenceException("Rollback failed", e);
}
}
@Override
public void setRollbackOnly() {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public boolean getRollbackOnly() {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public boolean isActive() {
return transaction.isActive();
}
}