com.atomikos.jdbc.internal.AtomikosNonXAParticipant Maven / Gradle / Ivy
/**
* Copyright (C) 2000-2020 Atomikos
*
* LICENSE CONDITIONS
*
* See http://www.atomikos.com/Main/WhichLicenseApplies for details.
*/
package com.atomikos.jdbc.internal;
import java.util.Map;
import com.atomikos.icatch.HeurCommitException;
import com.atomikos.icatch.HeurHazardException;
import com.atomikos.icatch.HeurMixedException;
import com.atomikos.icatch.HeurRollbackException;
import com.atomikos.icatch.Participant;
import com.atomikos.icatch.RollbackException;
import com.atomikos.icatch.SysException;
import com.atomikos.logging.Logger;
import com.atomikos.logging.LoggerFactory;
/**
*
*
*
* A participant for non-XA interactions. Instances are NOT recoverable in the
* sense that commit/rollback can fail after prepare. This is an implicit
* limitation of non-XA transactions.
*
*
*
*
*/
class AtomikosNonXAParticipant implements Participant
{
private static final Logger LOGGER = LoggerFactory.createLogger(AtomikosNonXAParticipant.class);
private boolean readOnly;
private String name;
private NonXaConnectionProxy connection;
AtomikosNonXAParticipant ( NonXaConnectionProxy connection , String name )
{
this.connection = connection;
this.name = name;
}
/**
* @see Participant
*/
public void setCascadeList ( Map allParticipants )
throws SysException
{
// ignore
}
/**
* @see com.atomikos.icatch.Participant#setGlobalSiblingCount(int)
*/
public void setGlobalSiblingCount ( int count )
{
// ignore
}
/*
*
*
* @see com.atomikos.icatch.Participant#prepare()
*/
public int prepare () throws RollbackException, HeurHazardException,
HeurMixedException, SysException
{
if (!readOnly) {
//see https://github.com/atomikos/transactions-essentials/issues/83
String msg = this.toString();
LOGGER.logWarning(msg);
throw new RollbackException(msg);
}
// DON'T return readOnly: we need the terminated event to reuse the connection in the pool!
int ret = Participant.READ_ONLY + 1;
return ret;
}
/**
* @see com.atomikos.icatch.Participant#commit(boolean)
*/
public void commit ( boolean onePhase )
throws HeurRollbackException, HeurHazardException,
HeurMixedException, RollbackException, SysException
{
try {
connection.transactionTerminated ( true );
} catch ( Exception e ) {
LOGGER.logError ( "Error in non-XA commit", e );
//see case 30752: don't throw HAZARD because retries are probably useless
//and the connection won't be reused by the pool but destroyed instead
throw new HeurMixedException();
}
}
/**
* @see com.atomikos.icatch.Participant#rollback()
*/
public void rollback () throws HeurCommitException,
HeurMixedException, HeurHazardException, SysException
{
try {
connection.transactionTerminated ( false );
} catch ( Exception e ) {
LOGGER.logError ( "Error in non-XA rollback", e );
//see case 30752: don't throw HAZARD because retries are probably useless
//and the connection won't be reused by the pool but destroyed instead
throw new HeurMixedException();
}
}
/**
* @see com.atomikos.icatch.Participant#forget()
*/
public void forget ()
{
// do nothing special, since DB doesn't know about 2PC or heuristics
}
public String getURI ()
{
return null;
}
public void setReadOnly ( boolean readOnly )
{
this.readOnly = readOnly;
}
@Override
public String toString() {
return com.atomikos.jdbc.AtomikosNonXADataSourceBean.class.getName() + " '" + name +
"' [NB: this resource does not support two-phase commit unless configured as readOnly]";
}
@Override
public String getResourceName() {
return name;
}
@Override
public boolean equals(Object o) {
boolean ret = false;
if (o instanceof AtomikosNonXAParticipant) {
AtomikosNonXAParticipant other = (AtomikosNonXAParticipant) o;
ret = connection == other.connection;
}
return ret;
}
@Override
public int hashCode() {
return connection.hashCode();
}
}