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/*
* Copyright 2004-2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
//----------------------------------------------------------------------------
//
// Module: CoordinatorSynchronizationImpl.java
//
// Description: Subordinate Coordinator synchronization interface.
//
// Product: com.sun.jts.CosTransactions
//
// Author: Simon Holdsworth
//
// Date: March, 1997
//
// Copyright (c): 1995-1997 IBM Corp.
//
// The source code for this program is not published or otherwise divested
// of its trade secrets, irrespective of what has been deposited with the
// U.S. Copyright Office.
//
// This software contains confidential and proprietary information of
// IBM Corp.
//----------------------------------------------------------------------------
package com.sun.jts.CosTransactions;
// Import required classes.
import org.omg.CORBA.*;
import org.omg.PortableServer.*;
import org.omg.PortableServer.POAPackage.ServantAlreadyActive;
import org.omg.PortableServer.POAPackage.ServantNotActive;
import org.omg.CosTransactions.*;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.LogDomains;
import com.sun.jts.utils.LogFormatter;
/**The CoordinatorSynchronizationImpl interface allows a subordinate Coordinator
* to be informed of the completion of a transaction, both before the transaction
* is prepared, and after it is committed or rolled back. Every
* Synchronization object registered with the subordinate should be called
* before the operation returns to the superior. An instance of this class
* should be accessed from only one thread within a process.
*
* @version 0.01
*
* @author Simon Holdsworth, IBM Corporation
*
* @see
*/
//----------------------------------------------------------------------------
// CHANGE HISTORY
//
// Version By Change Description
// 0.01 SAJH Initial implementation.
//------------------------------------------------------------------------------
class CoordinatorSynchronizationImpl extends SynchronizationPOA {
private static POA poa = null;
private Synchronization thisRef = null;
private Long localTID = null;
private TopCoordinator coordinator = null;
/*
Logger to log transaction messages
*/
static Logger _logger = LogDomains.getLogger(LogDomains.TRANSACTION_LOGGER);
/**Default CoordinatorSynchronizationImpl constructor.
*
* @param
*
* @return
*
* @see
*/
CoordinatorSynchronizationImpl() {
}
/**Sets up a new CoordinatorSynchronizationImpl object with the Coordinator reference so
* that it can pass on synchronization requests.
*
* @param coord The Coordinator for the transaction.
*
* @return
*
* @see
*/
CoordinatorSynchronizationImpl( TopCoordinator coord ) {
// Set the instance variables to the values passed in.
coordinator = coord;
try {
localTID = new Long(coord.getLocalTID());
} catch( SystemException exc ) {}
}
/**Cleans up the objects state.
*
* @param
*
* @return
*
* @see
*/
/*
public void finalize() {
coordinator = null;
}
*/
/**Passes on the before completion operation to the Coordinator.
*
* @param
*
* @return
*
* @exception SystemException The operation failed. The minor code provides
* a reason for the failure.
*
* @see
*/
public void before_completion()
throws SystemException {
// If there is no Coordinator reference, raise an exception.
if( coordinator == null ) {
INTERNAL exc = new INTERNAL(MinorCode.NoCoordinator,
CompletionStatus.COMPLETED_NO);
throw exc;
}
// Pass the before completion operation on to the coordinator.
coordinator.beforeCompletion();
}
/**Passes on the after completion operation to the Coordinator.
*
* @param status The state of the transaction.
*
* @return
*
* @exception SystemException The operation failed. The minor code provides
* a reason for the failure.
*
* @see
*/
public void after_completion( Status status )
throws SystemException {
// If there is no Coordinator reference, raise an exception.
if( coordinator == null ) {
INTERNAL exc = new INTERNAL(MinorCode.NoCoordinator,
CompletionStatus.COMPLETED_NO);
throw exc;
}
// Pass the after completion operation on to the coordinator.
// Destroy myself.
coordinator.afterCompletion(status);
destroy();
}
/**Returns the CORBA Object which represents this object.
*
* @param
*
* @return The CORBA object.
*
* @see
*/
Synchronization object() {
if( poa == null ) poa = Configuration.getPOA("transient"/*#Frozen*/);
if( thisRef == null ) {
if( poa == null )
poa = Configuration.getPOA("transient"/*#Frozen*/);
try {
poa.activate_object(this);
thisRef = SynchronizationHelper.
narrow(poa.servant_to_reference(this));
//thisRef = (Synchronization)this;
} catch( ServantAlreadyActive saexc ) {
_logger.log(Level.SEVERE,
"jts.create_CoordinatorSynchronization_object_error");
String msg = LogFormatter.getLocalizedMessage(_logger,
"jts.create_CoordinatorSynchronization_object_error");
throw new org.omg.CORBA.INTERNAL(msg);
} catch( ServantNotActive snexc ) {
_logger.log(Level.SEVERE,
"jts.create_CoordinatorSynchronization_object_error");
String msg = LogFormatter.getLocalizedMessage(_logger,
"jts.create_CoordinatorSynchronization_object_error");
throw new org.omg.CORBA.INTERNAL(msg);
} catch( Exception exc ) {
_logger.log(Level.SEVERE,
"jts.create_CoordinatorSynchronization_object_error");
String msg = LogFormatter.getLocalizedMessage(_logger,
"jts.create_CoordinatorSynchronization_object_error");
throw new org.omg.CORBA.INTERNAL(msg);
}
}
return thisRef;
}
/**Destroys the CoordinatorSynchronizationImpl object.
*
* @param
*
* @return
*
* @see
*/
void destroy() {
if( poa != null &&
thisRef != null )
try {
poa.deactivate_object(poa.reference_to_id(thisRef));
thisRef = null;
} catch( Exception exc ) {
_logger.log(Level.WARNING,"jts.object_destroy_error",
"CoordinatorResource");
}
//finalize();
coordinator = null;
}
/**
* Returns the CoordinatorSynchronizationImpl which serves the given object.
*
* @param The CORBA Object.
*
* @return The CoordinatorSynchronizationImpl object which serves it.
*
* @see
*/
synchronized static final CoordinatorSynchronizationImpl servant(Synchronization sync) {
CoordinatorSynchronizationImpl result = null;
// we will not be able to obtain the
// servant from our local POA for a proxy sync object.
// so return null
if (sync != null && Configuration.getProxyChecker().isProxy(sync)) {
return result;
}
if (sync instanceof CoordinatorSynchronizationImpl ) {
result = (CoordinatorSynchronizationImpl) sync;
} else if (poa != null) {
try {
result = (CoordinatorSynchronizationImpl) poa.reference_to_servant(sync);
if( result.thisRef == null )
result.thisRef = sync;
} catch( Exception exc ) {
_logger.log(Level.WARNING,"jts.cannot_locate_servant",
"CoordinatorSynchronization");
}
}
return result;
}
}
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