com.atomikos.datasource.xa.AbstractXidFactory Maven / Gradle / Ivy
/**
* Copyright (C) 2000-2023 Atomikos
*
* LICENSE CONDITIONS
*
* See http://www.atomikos.com/Main/WhichLicenseApplies for details.
*/
package com.atomikos.datasource.xa;
import java.util.concurrent.atomic.AtomicLong;
/**
*
*
*
* An abstract superclass for all XidFactory implementations. This class
* provides the functionality to create really unique XIDs.
*
*
*
*
*/
abstract class AbstractXidFactory implements XidFactory
{
private static final int MAX_LENGTH_OF_COUNTER = String.valueOf(Long.MAX_VALUE).length();
static AtomicLong counter = new AtomicLong(0);
public AbstractXidFactory ()
{
super ();
}
/**
* @see com.atomikos.datasource.xa.XidFactory
*/
public XID createXid ( String tid , String branchIdentifier, String uniqueResourceName )
{
if ( branchIdentifier.getBytes().length + MAX_LENGTH_OF_COUNTER > XID.MAXBQUALSIZE ) {
// see case 73086
throw new IllegalArgumentException ( "Value too long: " + branchIdentifier );
}
// first increment counter to make sure it is
// different from the last call that was done
// by the SAME tid (works because calls within
// one TID are serial)
return new XID (tid, branchIdentifier + counter.incrementAndGet(), uniqueResourceName);
}
}