/**
* Copyright (C) 2000-2010 Atomikos <info@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.icatch.imp;
import java.util.Dictionary;
import com.atomikos.icatch.HeurCommitException;
import com.atomikos.icatch.HeurHazardException;
import com.atomikos.icatch.HeurMixedException;
import com.atomikos.icatch.HeurRollbackException;
import com.atomikos.icatch.HeuristicMessage;
import com.atomikos.icatch.Participant;
import com.atomikos.icatch.RollbackException;
import com.atomikos.icatch.StringHeuristicMessage;
import com.atomikos.icatch.SysException;
public class ReadOnlyParticipant implements Participant {
//force set UID for backward log compatibility
private static final long serialVersionUID = -2141189205744565090L;
StringHeuristicMessage[] msgs;
//keep coordinator ID for equality
private final String coordinatorId;
public ReadOnlyParticipant ( CoordinatorImp coordinator )
{
this.coordinatorId = coordinator.getCoordinatorId();
msgs = new StringHeuristicMessage[1];
msgs[0] = new StringHeuristicMessage ( "ReadOnlyParticipant" );
}
public boolean recover() throws SysException {
return true;
}
public String getURI() {
return null;
}
public void setCascadeList(Dictionary allParticipants) throws SysException {
}
public void setGlobalSiblingCount(int count) {
}
public int prepare() throws RollbackException, HeurHazardException,
HeurMixedException, SysException {
return Participant.READ_ONLY;
}
public HeuristicMessage[] commit(boolean onePhase)
throws HeurRollbackException, HeurHazardException,
HeurMixedException, RollbackException, SysException {
return msgs;
}
public HeuristicMessage[] rollback() throws HeurCommitException,
HeurMixedException, HeurHazardException, SysException {
return msgs;
}
public void forget() {
}
public HeuristicMessage[] getHeuristicMessages() {
return msgs;
}
public boolean equals ( Object o ) {
boolean ret = false;
if ( o instanceof ReadOnlyParticipant && coordinatorId != null ) {
ReadOnlyParticipant other = ( ReadOnlyParticipant ) o;
ret = coordinatorId.equals ( other.coordinatorId );
}
return ret;
}
public int hashCode()
{
int ret = 1;
if ( coordinatorId != null ) ret = coordinatorId.hashCode();
return ret;
}
}