| DummyBaseTransactionManager.java |
/*
* JBoss, the OpenSource J2EE webOS
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package org.jboss.cache.transaction;
import org.jboss.logging.Logger;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.transaction.*;
import java.util.Properties;
/**
* @author bela
* @version $Revision: 1.1.8.3 $
* Date: May 15, 2003
* Time: 4:11:37 PM
*/
public class DummyBaseTransactionManager implements TransactionManager, java.io.Serializable {
static final long serialVersionUID = -6716097342564237376L;
static ThreadLocal thread_local=new ThreadLocal();
/**
* Starts a new transaction, and associate it with the calling thread.
*
* @throws javax.transaction.NotSupportedException If the calling thread is already
* associated with a transaction, and nested transactions are
* not supported.
* @throws javax.transaction.SystemException If the transaction service fails in an
* unexpected way.
*/
public void begin() throws NotSupportedException, SystemException {
Transaction currentTx;
if((currentTx=getTransaction()) != null)
throw new NotSupportedException(Thread.currentThread() +
" is already associated with a transaction (" + currentTx + ")");
DummyTransaction tx=new DummyTransaction(this);
setTransaction(tx);
}
/**
* Commit the transaction associated with the calling thread.
*
* @throws javax.transaction.RollbackException If the transaction was marked for rollback
* only, the transaction is rolled back and this exception is
* thrown.
* @throws IllegalStateException If the calling thread is not associated
* with a transaction.
* @throws javax.transaction.SystemException If the transaction service fails in an
* unexpected way.
* @throws javax.transaction.HeuristicMixedException If a heuristic decision was made and
* some some parts of the transaction have been committed while
* other parts have been rolled back.
* @throws javax.transaction.HeuristicRollbackException If a heuristic decision to roll
* back the transaction was made.
* @throws SecurityException If the caller is not allowed to commit this
* transaction.
*/
public void commit() throws RollbackException, HeuristicMixedException,
HeuristicRollbackException, SecurityException,
IllegalStateException, SystemException {
int status;
Transaction tx=getTransaction();
if(tx == null)
throw new IllegalStateException("thread not associated with transaction");
status=tx.getStatus();
if(status == Status.STATUS_MARKED_ROLLBACK)
throw new RollbackException();
tx.commit();
// Disassociate tx from thread.
setTransaction(null);
}
/**
* Rolls back the transaction associated with the calling thread.
*
* @throws IllegalStateException If the transaction is in a state
* where it cannot be rolled back. This could be because the
* calling thread is not associated with a transaction, or
* because it is in the
* {@link javax.transaction.Status#STATUS_PREPARED prepared state}.
* @throws SecurityException If the caller is not allowed to roll back
* this transaction.
* @throws javax.transaction.SystemException If the transaction service fails in an
* unexpected way.
*/
public void rollback() throws IllegalStateException, SecurityException,
SystemException {
Transaction tx=getTransaction();
if(tx == null)
throw new IllegalStateException("no transaction associated with thread");
tx.rollback();
// Disassociate tx from thread.
setTransaction(null);
}
/**
* Mark the transaction associated with the calling thread for rollback
* only.
*
* @throws IllegalStateException If the transaction is in a state
* where it cannot be rolled back. This could be because the
* calling thread is not associated with a transaction, or
* because it is in the
* {@link javax.transaction.Status#STATUS_PREPARED prepared state}.
* @throws javax.transaction.SystemException If the transaction service fails in an
* unexpected way.
*/
public void setRollbackOnly() throws IllegalStateException, SystemException {
Transaction tx=getTransaction();
if(tx == null)
throw new IllegalStateException("no transaction associated with calling thread");
tx.setRollbackOnly();
}
/**
* Get the status of the transaction associated with the calling thread.
*
* @return The status of the transaction. This is one of the
* {@link javax.transaction.Status} constants. If no transaction is associated
* with the calling thread,
* {@link javax.transaction.Status#STATUS_NO_TRANSACTION} is returned.
* @throws javax.transaction.SystemException If the transaction service fails in an
* unexpected way.
*/
public int getStatus() throws SystemException {
Transaction tx=getTransaction();
return tx != null ? tx.getStatus() : Status.STATUS_NO_TRANSACTION;
}
/**
* Get the transaction associated with the calling thread.
*
* @return The transaction associated with the calling thread, or
* <code>null</code> if the calling thread is not associated
* with a transaction.
* @throws javax.transaction.SystemException If the transaction service fails in an
* unexpected way.
*/
public Transaction getTransaction() throws SystemException {
return (Transaction)thread_local.get();
}
/**
* Change the transaction timeout for transactions started by the calling
* thread with the {@link #begin()} method.
*
* @param seconds The new timeout value, in seconds. If this parameter
* is <code>0</code>, the timeout value is reset to the default
* value.
* @throws javax.transaction.SystemException If the transaction service fails in an
* unexpected way.
*/
public void setTransactionTimeout(int seconds) throws SystemException {
throw new SystemException("not supported");
}
/**
* Suspend the association the calling thread has to a transaction,
* and return the suspended transaction.
* When returning from this method, the calling thread is no longer
* associated with a transaction.
*
* @return The transaction that the calling thread was associated with,
* or <code>null</code> if the calling thread was not associated
* with a transaction.
* @throws javax.transaction.SystemException If the transaction service fails in an
* unexpected way.
*/
public Transaction suspend() throws SystemException {
Transaction retval=getTransaction();
setTransaction(null);
return retval;
}
/**
* Resume the association of the calling thread with the given
* transaction.
*
* @param tx The transaction to be associated with the calling thread.
* @throws javax.transaction.InvalidTransactionException If the argument does not represent
* a valid transaction.
* @throws IllegalStateException If the calling thread is already
* associated with a transaction.
* @throws javax.transaction.SystemException If the transaction service fails in an
* unexpected way.
*/
public void resume(Transaction tx) throws InvalidTransactionException, IllegalStateException, SystemException {
setTransaction(tx);
}
void setTransaction(Transaction tx) {
thread_local.set(tx);
}
}
| DummyBaseTransactionManager.java |