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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
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package org.apache.cayenne.tx;
import org.apache.cayenne.CayenneRuntimeException;
import org.apache.cayenne.access.DataDomain;
import org.apache.cayenne.access.Transaction;
import org.apache.cayenne.di.Inject;
/**
* @since 3.2
*/
public class DefaultTransactionManager implements TransactionManager {
private DataDomain dataDomain;
public DefaultTransactionManager(@Inject DataDomain dataDomain) {
this.dataDomain = dataDomain;
}
public <T> T performInTransaction(TransactionalOperation<T> op) {
// join existing tx if it is in progress... in such case do not try to
// commit or roll it back
Transaction currentTx = Transaction.getThreadTransaction();
if (currentTx != null) {
return op.perform();
}
// start a new tx and manage it till the end
Transaction tx = dataDomain.createTransaction();
Transaction.bindThreadTransaction(tx);
try {
T result = op.perform();
tx.commit();
return result;
} catch (Exception ex) {
tx.setRollbackOnly();
throw new CayenneRuntimeException(ex);
} finally {
Transaction.bindThreadTransaction(null);
if (tx.getStatus() == Transaction.STATUS_MARKED_ROLLEDBACK) {
try {
tx.rollback();
} catch (Exception e) {
}
}
}
}
}