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//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//$Log: ExclusiveExternalXAPooledConnectionImp.java,v $
//Revision 1.3 2006/12/21 07:30:38 guy
//Merged in changes of 3.1.3 release
//
//Revision 1.2.2.1 2006/12/18 13:21:17 guy
//FIXED 10102
//
//Revision 1.2 2006/09/19 08:03:55 guy
//FIXED 10050
//
//Revision 1.1.1.1 2006/08/29 10:01:12 guy
//Import of 3.0 essentials edition.
//
//Revision 1.1.1.1 2006/04/29 08:55:38 guy
//Initial import.
//
//Revision 1.1.1.1 2006/03/29 13:21:31 guy
//Imported.
//
//Revision 1.1.1.1 2006/03/23 16:25:28 guy
//Imported.
//
//Revision 1.1.1.1 2006/03/22 13:46:54 guy
//Import.
//
//Revision 1.2 2006/03/15 10:32:01 guy
//Formatted code.
//
//Revision 1.1.1.1 2006/03/09 14:59:14 guy
//Imported 3.0 development into CVS repository.
//
//Revision 1.7 2004/11/15 08:38:22 guy
//Updated to correct bug: aborted connections were not reused.
//
//Revision 1.6 2004/11/13 16:47:46 guy
//Debugged.
//
//Revision 1.5 2004/11/13 10:23:53 guy
//Debugged.
//
//Revision 1.4 2004/10/12 13:04:27 guy
//Updated docs (changed Atomikos to Atomikos in many places).
//
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//Revision 1.3 2004/10/01 12:54:25 guy
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//Debugged and tested..
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//Revision 1.2 2004/10/01 08:56:44 guy
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//DebuggedDebugged
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//Revision 1.1 2004/09/30 09:56:18 guy
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//Added support for external pools.
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//Implemented support for late enlistment (start of tx after getConnection()).
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//Revision 1.2 2003/03/11 06:42:18 guy
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//Merged in changes from transactionsJTA100 branch.&
//$Id: ExclusiveExternalXAPooledConnectionImp.java,v 1.3 2006/12/21 07:30:38 guy Exp $
//
//Revision 1.1.2.3 2003/02/26 21:46:31 guy
//Added Logging Features.
//
//Revision 1.1.2.2 2002/12/26 16:25:38 guy
//Improved pooling; added support for exclusive connection (no reuse before 2PC)
//
//Revision 1.1.2.1 2002/12/18 17:43:13 guy
//Added exclusive (non-shared) pooled connections as a generic way
//to tackle integration with SQLServer7.0 or Oracle.
//Previously, this was restricted to Oracle only.
//
/*
* Copyright 2000-2008, Atomikos (http://www.atomikos.com)
*
* This code ("Atomikos TransactionsEssentials"), by itself,
* is being distributed under the
* Apache License, Version 2.0 ("License"), a copy of which may be found at
* http://www.atomikos.com/licenses/apache-license-2.0.txt .
* You may not use this file except in compliance with the License.
*
* While the License grants certain patent license rights,
* those patent license rights only extend to the use of
* Atomikos TransactionsEssentials by itself.
*
* This code (Atomikos TransactionsEssentials) contains certain interfaces
* in package (namespace) com.atomikos.icatch
* (including com.atomikos.icatch.Participant) which, if implemented, may
* infringe one or more patents held by Atomikos.
* It should be appreciated that you may NOT implement such interfaces;
* licensing to implement these interfaces must be obtained separately from Atomikos.
*
* 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.
*
*/
package com.atomikos.jdbc;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.Enumeration;
import javax.sql.ConnectionEvent;
import javax.sql.ConnectionEventListener;
import javax.sql.XAConnection;
import com.atomikos.datasource.ResourceTransaction;
import com.atomikos.datasource.TransactionalResource;
import com.atomikos.icatch.CompositeTransaction;
import com.atomikos.icatch.Synchronization;
import com.atomikos.icatch.TxState;
import com.atomikos.icatch.system.Configuration;
/**
*
*
* A non-shared implementation of a pooled connection. Some DBs such as Oracle
* or SQLServer deviate from the standard in the moment where an XAResource can
* be reused. This has to be AFTER 2PC (contrary to standard). Instances of this
* class will generate TWO close events, and only the second will have
* isDiscarded set to true.
*/
public class ExclusiveExternalXAPooledConnectionImp extends
ExternalXAPooledConnectionImp implements Synchronization
{
private boolean afterCompletionDone_ = false;
public ExclusiveExternalXAPooledConnectionImp ( XAConnection c ,
TransactionalResource res )
{
super ( c , res );
}
public ExclusiveExternalXAPooledConnectionImp ( XAConnection c ,
TransactionalResource res , PrintWriter logWriter )
{
super ( c , res , logWriter );
}
public synchronized void setResourceTransaction ( ResourceTransaction restx )
throws SQLException
{
// System.out.println ( "setResourceTransaction");
super.setResourceTransaction ( restx );
try {
// add synchronization to current CT.
// NOTE: since we are only reusable AFTER termination
// of the CT, we can not add ourselves as synchronization
// more than once -> GOOD, otherwise we would have
// dangerous behaviour (multiple terminated notifications
// would mess up reused connections!)
// System.out.println ( "registering synchronization" );
CompositeTransaction ct = Configuration
.getCompositeTransactionManager ()
.getCompositeTransaction ();
ct.registerSynchronization ( this );
afterCompletionDone_ = false;
// added: needed for reuse of aborts (beforecompletion not called!)
} catch ( Exception e ) {
AtomikosSQLException.throwAtomikosSQLException ( e.getMessage() , e );
}
}
public void beforeCompletion ()
{
// reset from previous tx; for afterCompletion processing
afterCompletionDone_ = false;
}
public void afterCompletion ( Object state )
{
// this method is called once for every
// SQL method done in this transaction
// so don't repeat this every time
if ( afterCompletionDone_ )
return;
if ( state.equals ( TxState.TERMINATED )
|| state.equals ( TxState.HEUR_MIXED )
|| state.equals ( TxState.HEUR_HAZARD )
|| state.equals ( TxState.HEUR_ABORTED )
|| state.equals ( TxState.HEUR_COMMITTED ) ) {
// connection is reusable!
setDiscarded ();
// next, notify listeners of REAL close event.
ConnectionEvent e2 = new ConnectionEvent ( this );
Enumeration enumm = listeners_.elements ();
while ( enumm.hasMoreElements () ) {
ConnectionEventListener l = (ConnectionEventListener) enumm
.nextElement ();
l.connectionClosed ( e2 );
}
afterCompletionDone_ = true;
}
// System.out.println ( "afterCompletion ( " + state + " )" );
}
public void connectionClosed ( ConnectionEvent e )
{
// overridden from base class, to NOT set discarded
ResourceTransaction restx = unsetResourceTransaction ();
if ( restx != null )
suspendResourceTransaction ( restx );
else {
// if not in tx, then don't wait until tx finishes to reuse!
setDiscarded ();
ConnectionEvent e2 = new ConnectionEvent ( this );
Enumeration enumm = listeners_.elements ();
while ( enumm.hasMoreElements () ) {
ConnectionEventListener l = (ConnectionEventListener) enumm
.nextElement ();
l.connectionClosed ( e2 );
}
}
}
}
