/*
* Copyright 2004-2011 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.test.jdbcx;
import java.util.concurrent.atomic.AtomicInteger;
import javax.transaction.xa.Xid;
import org.h2.util.MathUtils;
import org.h2.util.Utils;
/**
* A simple Xid implementation.
*/
public class SimpleXid implements Xid {
private static AtomicInteger next = new AtomicInteger();
private final int formatId;
private final byte[] branchQualifier;
private final byte[] globalTransactionId;
private SimpleXid(int formatId, byte[] branchQualifier, byte[] globalTransactionId) {
this.formatId = formatId;
this.branchQualifier = branchQualifier;
this.globalTransactionId = globalTransactionId;
}
/**
* Create a new random xid.
*
* @return the new object
*/
public static SimpleXid createRandom() {
int formatId = next.getAndIncrement();
byte[] bq = new byte[MAXBQUALSIZE];
MathUtils.randomBytes(bq);
byte[] gt = new byte[MAXGTRIDSIZE];
MathUtils.randomBytes(gt);
return new SimpleXid(formatId, bq, gt);
}
public byte[] getBranchQualifier() {
return branchQualifier;
}
public int getFormatId() {
return formatId;
}
public byte[] getGlobalTransactionId() {
return globalTransactionId;
}
public int hashCode() {
return formatId;
}
public boolean equals(Object other) {
if (other instanceof Xid) {
Xid xid = (Xid) other;
if (xid.getFormatId() == formatId) {
if (Utils.compareNotNull(branchQualifier, xid.getBranchQualifier()) == 0) {
if (Utils.compareNotNull(globalTransactionId, xid.getGlobalTransactionId()) == 0) {
return true;
}
}
}
}
return false;
}
public String toString() {
return "xid:" + formatId;
}
}