org.apache.openjpa.ee.JNDIManagedRuntime Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* 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
* "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.apache.openjpa.ee;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.transaction.TransactionManager;
/**
* Implementation of the {@link ManagedRuntime} interface that uses JNDI to
* find the TransactionManager.
*
* @author Abe White
*/
public class JNDIManagedRuntime extends AbstractManagedRuntime
implements ManagedRuntime {
private String _tmLoc = "java:/TransactionManager";
private TransactionManager _tm = null;
/**
* Return the location of the {@link TransactionManager} in JNDI.
*/
public String getTransactionManagerName() {
return _tmLoc;
}
/**
* Set the location of the {@link TransactionManager} in JNDI.
*/
public void setTransactionManagerName(String name) {
_tmLoc = name;
_tm = null; // reset the cached TM
}
/**
* Return the cached TransactionManager instance.
*/
public TransactionManager getTransactionManager() throws Exception {
if (_tm == null) {
Context ctx = new InitialContext();
try {
_tm = (TransactionManager) ctx.lookup(_tmLoc);
} finally {
ctx.close();
}
}
return _tm;
}
public void setRollbackOnly(Throwable cause)
throws Exception {
// there is no generic support for setting the rollback cause
getTransactionManager().getTransaction().setRollbackOnly();
}
public Throwable getRollbackCause()
throws Exception {
// there is no generic support for setting the rollback cause
return null;
}
}