/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.activemq.apollo.openwire.command;
import org.fusesource.hawtbuf.Buffer;
import org.fusesource.hawtbuf.HexSupport;
import javax.transaction.xa.Xid;
import java.util.Arrays;
/**
* @openwire:marshaller code="112"
* @version $Revision: 1.6 $
*/
public class XATransactionId extends TransactionId implements Xid, Comparable {
public static final byte DATA_STRUCTURE_TYPE = CommandTypes.ACTIVEMQ_XA_TRANSACTION_ID;
private int formatId;
private byte[] branchQualifier;
private byte[] globalTransactionId;
private transient int hash;
private transient String transactionKey;
public XATransactionId() {
}
public XATransactionId(Xid xid) {
this.formatId = xid.getFormatId();
this.globalTransactionId = xid.getGlobalTransactionId();
this.branchQualifier = xid.getBranchQualifier();
}
public byte getDataStructureType() {
return DATA_STRUCTURE_TYPE;
}
public synchronized String getTransactionKey() {
if (transactionKey == null) {
transactionKey = "XID:" + formatId + ":" + HexSupport.toHexFromBuffer(new Buffer(globalTransactionId)) + ":"
+ HexSupport.toHexFromBuffer(new Buffer(branchQualifier));
}
return transactionKey;
}
public String toString() {
return getTransactionKey();
}
public boolean isXATransaction() {
return true;
}
public boolean isLocalTransaction() {
return false;
}
/**
* @openwire:property version=1
*/
public int getFormatId() {
return formatId;
}
/**
* @openwire:property version=1
*/
public byte[] getGlobalTransactionId() {
return globalTransactionId;
}
/**
* @openwire:property version=1
*/
public byte[] getBranchQualifier() {
return branchQualifier;
}
public void setBranchQualifier(byte[] branchQualifier) {
this.branchQualifier = branchQualifier;
this.hash = 0;
}
public void setFormatId(int formatId) {
this.formatId = formatId;
this.hash = 0;
}
public void setGlobalTransactionId(byte[] globalTransactionId) {
this.globalTransactionId = globalTransactionId;
this.hash = 0;
}
public int hashCode() {
if (hash == 0) {
hash = formatId;
hash = hash(globalTransactionId, hash);
hash = hash(branchQualifier, hash);
if (hash == 0) {
hash = 0xaceace;
}
}
return hash;
}
private static int hash(byte[] bytes, int hash) {
int size = bytes.length;
for (int i = 0; i < size; i++) {
hash ^= bytes[i] << ((i % 4) * 8);
}
return hash;
}
public boolean equals(Object o) {
if (o == null || o.getClass() != XATransactionId.class) {
return false;
}
XATransactionId xid = (XATransactionId)o;
return xid.formatId == formatId && Arrays.equals(xid.globalTransactionId, globalTransactionId)
&& Arrays.equals(xid.branchQualifier, branchQualifier);
}
public int compareTo(Object o) {
if (o == null || o.getClass() != XATransactionId.class) {
return -1;
}
XATransactionId xid = (XATransactionId)o;
return getTransactionKey().compareTo(xid.getTransactionKey());
}
}