org.openmdx.kernel.lightweight.transaction.TransactionIdFactory Maven / Gradle / Ivy
/*
* ====================================================================
* Project: openMDX, http://www.openmdx.org/
* Description: Transaction Branch Id
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2004-2009, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.kernel.lightweight.transaction;
import javax.transaction.xa.Xid;
import org.openmdx.kernel.id.spi.TimeBasedIdGenerator;
/**
* A Transaction Id Generator
*/
class TransactionIdFactory
extends TimeBasedIdGenerator
{
/**
* Create an Xid
*
* @return a new transaction identifier
*/
public Xid createTransactionId(
) {
return new TransactionId(
nextMostSignificantBits(),
nextLeastSignificantBits()
);
}
/**
* Create a transaction branch id
*
* @return transaction branch id
*/
public Xid createTransactionBranchId(
Xid transactionId,
int branchQualifier
){
return new TransactionBranchId((TransactionId)transactionId, branchQualifier);
}
/* (non-Javadoc)
* @see org.openmdx.kernel.id.spi.TimeBasedIdBuilder#getNode()
*/
@Override
protected long getNode() {
return node;
}
/**
* The node value
*/
private static final long node = createRandomBasedNode();
}