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MysqlXid.java
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Wed, Aug 21, 06:03

MysqlXid.java
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/*
Copyright (c) 2005, 2014, 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 FOSS 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
*/
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;
}
@Override
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 == this.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;
}
@Override
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;
}
}

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