Java Transaction Xid Check sameXID(Xid x1, Xid x2)

Description

Compares two Xid instances.

License

LGPL

Parameter

Parameter	Description
x1	first Xid
x2	second Xid

Return

true if the two instances are the same, false otherwise.

Declaration

public static boolean sameXID(Xid x1, Xid x2) 

Method Source Code

//package com.java2s;
/*// w  w w. jav  a  2 s  .  c  o  m
 * 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.
 */

import javax.transaction.xa.Xid;

public class Main {
    /**
     * Compares two Xid instances.
     *
     * @param x1 first Xid
     * @param x2 second Xid
     *
     * @return <code>true</code> if the two instances are the same,
     *         <code>false</code> otherwise.
     */

    public static boolean sameXID(Xid x1, Xid x2) {
        if (x1 == x2)
            return true;
        else {
            if (x1.getFormatId() == x2.getFormatId()) {
                byte[] gtrid1 = x1.getGlobalTransactionId();
                byte[] gtrid2 = x2.getGlobalTransactionId();

                if (gtrid1.length == gtrid2.length) {
                    for (int i = 0; i < gtrid1.length; i++) {
                        if (gtrid1[i] != gtrid2[i])
                            return false;
                    }
                } else
                    return false;

                byte[] bqual1 = x1.getBranchQualifier();
                final int bqual1Len = (bqual1 == null ? 0 : bqual1.length);
                byte[] bqual2 = x2.getBranchQualifier();
                final int bqual2Len = (bqual2 == null ? 0 : bqual2.length);

                if (bqual1Len == bqual2Len) {
                    for (int i = 0; i < bqual1Len; i++) {
                        if (bqual1[i] != bqual2[i])
                            return false;
                    }
                } else
                    return false;

                return true;
            } else
                return false;
        }
    }
}

Related

1. getRedisKey(String keyPrefix, Xid xid)
2. getXidSize(Xid xid)
3. sameTransaction(Xid x1, Xid x2)
4. xidToString(Xid xid, boolean includeBranchQualifier)