/**
*
* Copyright 2005 LogicBlaze, Inc. http://www.logicblaze.com
*
* 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.apache.geronimo.transaction.context;
import javax.transaction.HeuristicMixedException;
import javax.transaction.HeuristicRollbackException;
import javax.transaction.InvalidTransactionException;
import javax.transaction.NotSupportedException;
import javax.transaction.RollbackException;
import javax.transaction.SystemException;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import javax.transaction.UserTransaction;
import org.apache.geronimo.transaction.ExtendedTransactionManager;
/**
* The GeronimoTransactionManager is a wrapper around the TransactionContextManager
* to offer both UserTransaction and TransactionManager interfaces.
*
* @version $Revision: 1.5 $
* @author <a href="mailto:gnt@codehaus.org">Guillaume Nodet</a>
*/
public class GeronimoTransactionManager implements UserTransaction, TransactionManager {
TransactionContextManager transactionContextManager;
public GeronimoTransactionManager(TransactionContextManager transactionContextManager) {
this.transactionContextManager = transactionContextManager;
}
public void begin() throws NotSupportedException, SystemException {
// Create a context if none has been set yet
if (transactionContextManager.getContext() == null) {
transactionContextManager.newUnspecifiedTransactionContext();
}
TransactionContext ctx = transactionContextManager.getContext();
if (ctx instanceof UnspecifiedTransactionContext == false) {
throw new NotSupportedException("Previous Transaction has not been committed");
}
UnspecifiedTransactionContext oldContext = (UnspecifiedTransactionContext) ctx;
GeronimoTransactionContext transactionContext = new GeronimoTransactionContext(
this,
(ExtendedTransactionManager) transactionContextManager.getTransactionManager(),
oldContext);
oldContext.suspend();
try {
transactionContext.begin(0);
} catch (SystemException e) {
oldContext.resume();
throw e;
} catch (NotSupportedException e) {
oldContext.resume();
throw e;
}
transactionContextManager.setContext(transactionContext);
}
public void commit() throws HeuristicMixedException, HeuristicRollbackException, IllegalStateException, RollbackException, SecurityException, SystemException {
TransactionContext ctx = transactionContextManager.getContext();
if (ctx instanceof GeronimoTransactionContext == false) {
throw new IllegalStateException("Transaction has not been started");
}
GeronimoTransactionContext beanContext = (GeronimoTransactionContext) ctx;
try {
if (!beanContext.commit()) {
throw new RollbackException();
}
} finally {
TransactionContext oldContext = beanContext.getOldContext();
transactionContextManager.setContext(oldContext);
if (oldContext != null) {
try {
oldContext.resume();
} catch (InvalidTransactionException e) {
throw (SystemException)new SystemException("Unable to resume perexisting transaction context").initCause(e);
}
}
}
}
public int getStatus() throws SystemException {
return transactionContextManager.getStatus();
}
public void rollback() throws IllegalStateException, SecurityException, SystemException {
TransactionContext ctx = transactionContextManager.getContext();
if (ctx instanceof GeronimoTransactionContext == false) {
throw new IllegalStateException("Transaction has not been started");
}
GeronimoTransactionContext beanContext = (GeronimoTransactionContext) ctx;
try {
beanContext.rollback();
} finally {
transactionContextManager.setContext(null);
}
}
public void setRollbackOnly() throws IllegalStateException, SystemException {
transactionContextManager.setRollbackOnly();
}
public void setTransactionTimeout(int seconds) throws SystemException {
if (seconds < 0) {
throw new SystemException("transaction timeout must be positive or 0, not " + seconds);
}
transactionContextManager.setTransactionTimeout(seconds);
}
public Transaction getTransaction() throws SystemException {
Object context = transactionContextManager.getContext();
if (context == null || context instanceof UnspecifiedTransactionContext) {
return null;
} else if (context instanceof GeronimoTransactionContext){
return ((GeronimoTransactionContext) context).getTransactionDelegate();
} else {
throw new IllegalStateException("unrecognized transaction context");
}
}
public void resume(Transaction tx) throws IllegalStateException, InvalidTransactionException, SystemException {
// Create a context if none has been set yet
if (transactionContextManager.getContext() == null) {
transactionContextManager.newUnspecifiedTransactionContext();
}
if (tx instanceof GeronimoTransactionDelegate == false) {
throw new InvalidTransactionException("invalid transaction specified");
}
TransactionContext ctx = ((GeronimoTransactionDelegate) tx).getContext();
transactionContextManager.resumeBeanTransactionContext(ctx);
}
public Transaction suspend() throws SystemException {
return ((GeronimoTransactionContext) transactionContextManager.suspendBeanTransactionContext()).getTransactionDelegate();
}
}