com.atomikos.icatch.imp.PropagationImp Maven / Gradle / Ivy
/**
* Copyright (C) 2000-2012 Atomikos
*
* 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.icatch.imp;
import java.util.Stack;
import com.atomikos.icatch.CompositeTransaction;
import com.atomikos.icatch.Propagation;
import com.atomikos.icatch.RecoveryCoordinator;
/**
* Implementation of Propagation interface.
*/
public class PropagationImp implements Propagation
{
/**
* Create a new instance. This method replaces the lowest ancestor by an
* adaptor (interposition) for both efficiency and correct replay handling.
* Implementations of ImportingTransactionManager should use this method to
* convert an incoming propagation into the proper local instance, or replay
* requests will not work properly.
*
* @param propagation
* The propagation for which to create a new instance.
* @param adaptor
* The adaptor for replay requests.
*/
public static Propagation adaptPropagation ( Propagation propagation ,
RecoveryCoordinator adaptor )
{
Stack lineage = propagation.getLineage ();
// replace most recent ancestor by adaptor
CompositeTransaction remote = (CompositeTransaction) lineage.peek ();
CompositeTransaction ct = new CompositeTransactionAdaptor ( lineage,
remote.getTid (), remote.isSerial (), adaptor , remote.getCompositeCoordinator().isRecoverableWhileActive() );
lineage.pop ();
// push adaptor on ancestor stack, in the place of the remote
lineage.push ( ct );
return new PropagationImp ( lineage, propagation.isSerial (),
propagation.getTimeOut () );
}
private Stack lineage_;
private boolean serial_;
private long timeout_;
/**
* Construct a new instance.
*
* @param lineage
* The lineage stack of ancestors.
* @param serial
* Serial mode indicator.
* @param timeout
* The timeout left for the tx.
*/
public PropagationImp ( Stack lineage , boolean serial , long timeout )
{
serial_ = serial;
lineage_ = (Stack) lineage.clone ();
timeout_ = timeout;
}
/**
* @see Propagation
*/
public Stack getLineage ()
{
return lineage_;
}
/**
* @see Propagation
*/
public boolean isSerial ()
{
return serial_;
}
/**
* @see Propagation
*/
public long getTimeOut ()
{
return timeout_;
}
/**
* Required for JBoss integration: client demarcation depends on this.
*/
public boolean equals ( Object o )
{
boolean ret = false;
if ( o instanceof PropagationImp ) {
PropagationImp other = (PropagationImp) o;
CompositeTransaction otherCt = (CompositeTransaction) other.lineage_
.peek ();
CompositeTransaction ct = (CompositeTransaction) lineage_.peek ();
// if the lowermost parents are the same then the propagation
// is also the same
ret = ct.isSameTransaction ( otherCt );
}
return ret;
}
/**
* Required for JBoss integration.
*/
public int hashCode ()
{
int ret = 0;
CompositeTransaction ct = (CompositeTransaction) lineage_.peek ();
ret = ct.getTid ().hashCode ();
return ret;
}
}