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/*
* JBoss, Home of Professional Open Source
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
/*
* Copyright (C) 1998, 1999, 2000,
*
* Arjuna Solutions Limited,
* Newcastle upon Tyne,
* Tyne and Wear,
* UK.
*
* $Id: XID.java 2342 2006-03-30 13:06:17Z $
*/
package com.arjuna.ats.internal.jta.xa;
import java.io.Serializable;
import com.arjuna.ats.jta.xa.XATxConverter;
/**
* An X/Open XID implementation.
*
* @author Mark Little ([email protected])
* @version $Id: XID.java 2342 2006-03-30 13:06:17Z $
* @since JTS 1.0.
*/
public class XID implements Serializable
{
private static final long serialVersionUID = 1L;
public static final int XIDDATASIZE = 128; /* size in bytes */
public static final int MAXGTRIDSIZE = 64; /*
* maximum size in bytes of
* gtrid
*/
public static final int MAXBQUALSIZE = 64; /*
* maximum size in bytes of
* bqual
*/
public static final int NULL_XID = -1;
public XID ()
{
formatID = NULL_XID;
gtrid_length = 0;
bqual_length = 0;
}
/**
* Check for equality, then check transaction id only.
*/
public final boolean isSameTransaction (XID xid)
{
if (formatID == xid.formatID)
{
if (gtrid_length == xid.gtrid_length)
{
if (equals(xid))
return true;
else
{
for (int i = 0; i < gtrid_length; i++)
{
if (data[i] != xid.data[i])
return false;
}
return true;
}
}
}
return false;
}
public void copy (XID toCopy)
{
if ((toCopy == null) || (toCopy.formatID == NULL_XID))
{
formatID = NULL_XID;
gtrid_length = 0;
bqual_length = 0;
}
else
{
formatID = toCopy.formatID;
gtrid_length = toCopy.gtrid_length;
bqual_length = toCopy.bqual_length;
System.arraycopy(toCopy.data, 0, data, 0, toCopy.data.length);
}
}
public boolean equals (XID other)
{
if (other == null)
return false;
if (other == this)
return true;
else
{
if ((formatID == other.formatID)
&& (gtrid_length == other.gtrid_length)
&& (bqual_length == other.bqual_length))
{
for (int i = 0; i < (gtrid_length + bqual_length); i++)
{
if (data[i] != other.data[i])
return false;
}
return true;
}
else
return false;
}
}
public String toString ()
{
// controversial and not too robust. see JBTM-297 before messing with this.
if(formatID == XATxConverter.FORMAT_ID) {
// it's one of ours, we know how to inspect it:
return XATxConverter.getXIDString(this);
}
// it's a foreign id format, use a general algorithm:
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("< ");
stringBuilder.append(formatID);
stringBuilder.append(", ");
stringBuilder.append(gtrid_length);
stringBuilder.append(", ");
stringBuilder.append(bqual_length);
stringBuilder.append(", ");
for (int i = 0; i < gtrid_length; i++) {
stringBuilder.append(data[i]);
}
stringBuilder.append(", ");
for (int i = 0; i < bqual_length; i++) {
stringBuilder.append(gtrid_length+data[i]);
}
stringBuilder.append(" >");
return stringBuilder.toString();
}
public int formatID; /* format identifier (0 for OSI) */
public int gtrid_length; /* value not to exceed 64 */
public int bqual_length; /* value not to exceed 64 */
public byte[] data = new byte[XIDDATASIZE];
}
