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/*
* ====================================================================
* Project: openMDX, http://www.openmdx.org/
* Description: X/Open Transaction Branch Identifier
* 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 or is based on 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.text.format.HexadecimalFormatter;
/**
* X/Open Transaction Branch Identifier
*/
class TransactionBranchId extends TransactionId {
/**
* Constructor
*
* @param globalTransactionIdMostSignificantBits
* @param globalTransactionIdLeastSignificantBits
*/
TransactionBranchId(
TransactionId transactionId,
int branchQualifier
){
super(
transactionId.mostSigBits,
transactionId.leastSigBits
);
this.branchQualifier = branchQualifier;
}
/**
* Constructor
*/
protected TransactionBranchId(
){
// Serialization Constructor
}
/**
* @serial
*/
protected int branchQualifier;
//------------------------------------------------------------------------
// Extends Object
//------------------------------------------------------------------------
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return super.hashCode() ^ this.branchQualifier;
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if(!(obj instanceof Xid)) return false;
if(!(obj.getClass() == TransactionBranchId.class)) return equal(this, (Xid) obj);
TransactionBranchId that = (TransactionBranchId) obj;
return
this.mostSigBits == that.mostSigBits &&
this.leastSigBits == that.leastSigBits &&
this.branchQualifier == that.branchQualifier;
}
/**
* Simplify toString subclassing
*
* @return a string builder containing the Xid's String representation
*/
@Override
protected StringBuilder toStringBuilder(
){
return super.toStringBuilder(
).append(
'-'
).append(
new HexadecimalFormatter(this.branchQualifier)
);
}
//------------------------------------------------------------------------
// Implements Xid
//------------------------------------------------------------------------
/* (non-Javadoc)
* @see javax.transaction.xa.Xid#getBranchQualifier()
*/
@Override
public byte[] getBranchQualifier() {
return new byte[]{
(byte)(branchQualifier >> 24),
(byte)(branchQualifier >> 16),
(byte)(branchQualifier >> 8),
(byte)(branchQualifier )
};
}
}
