source: Ballon/out/artifacts/geisa_artifact/WEB-INF/lib/mysql-connector-java-5.1.21/src/com/mysql/jdbc/jdbc2/optional/MysqlXid.java @ 848

/*
 Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
 

  The MySQL Connector/J is licensed under the terms of the GPLv2
  <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors.
  There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
  this software, see the FLOSS License Exception
  <http://www.mysql.com/about/legal/licensing/foss-exception.html>.

  This program is free software; you can redistribute it and/or modify it under the terms
  of the GNU General Public License as published by the Free Software Foundation; version 2
  of the License.

  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU General Public License for more details.

  You should have received a copy of the GNU General Public License along with this
  program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
  Floor, Boston, MA 02110-1301  USA

*/

package com.mysql.jdbc.jdbc2.optional;

import javax.transaction.xa.Xid;

/**
 * Implementation of the XID interface for MySQL XA
 * 
 * @version $Id: $
 */
public class MysqlXid implements Xid {

        int hash = 0;

        byte[] myBqual;

        int myFormatId;

        byte[] myGtrid;

        public MysqlXid(byte[] gtrid, byte[] bqual, int formatId) {
                this.myGtrid = gtrid;
                this.myBqual = bqual;
                this.myFormatId = formatId;
        }

        public boolean equals(Object another) {

                if (another instanceof Xid) {
                        Xid anotherAsXid = (Xid) another;

                        if (this.myFormatId != anotherAsXid.getFormatId()) {
                                return false;
                        }

                        byte[] otherBqual = anotherAsXid.getBranchQualifier();
                        byte[] otherGtrid = anotherAsXid.getGlobalTransactionId();

                        if (otherGtrid != null && otherGtrid.length == this.myGtrid.length) {
                                int length = otherGtrid.length;

                                for (int i = 0; i < length; i++) {
                                        if (otherGtrid[i] != this.myGtrid[i]) {
                                                return false;
                                        }
                                }

                                if (otherBqual != null && otherBqual.length == myBqual.length) {
                                        length = otherBqual.length;

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

                                return true;
                        }
                }

                return false;
        }

        public byte[] getBranchQualifier() {
                return this.myBqual;
        }

        public int getFormatId() {
                return this.myFormatId;
        };

        public byte[] getGlobalTransactionId() {
                return this.myGtrid;
        }

        public synchronized int hashCode() {
                if (this.hash == 0) {
                        for (int i = 0; i < this.myGtrid.length; i++) {
                                this.hash = 33 * this.hash + this.myGtrid[i];
                        }
                }

                return this.hash;
        }
}