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The ActiveMQ Message Broker and Client implementations
/**
* 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.command;
/**
* @openwire:marshaller code="110"
* @version $Revision: 1.12 $
*/
public class MessageId implements DataStructure, Comparable {
public static final byte DATA_STRUCTURE_TYPE = CommandTypes.MESSAGE_ID;
protected ProducerId producerId;
protected long producerSequenceId;
protected long brokerSequenceId;
private transient String key;
private transient int hashCode;
public MessageId() {
this.producerId = new ProducerId();
}
public MessageId(ProducerInfo producerInfo, long producerSequenceId) {
this.producerId = producerInfo.getProducerId();
this.producerSequenceId = producerSequenceId;
}
public MessageId(String messageKey) {
setValue(messageKey);
}
public MessageId(String producerId, long producerSequenceId) {
this(new ProducerId(producerId), producerSequenceId);
}
public MessageId(ProducerId producerId, long producerSequenceId) {
this.producerId = producerId;
this.producerSequenceId = producerSequenceId;
}
/**
* Sets the value as a String
*/
public void setValue(String messageKey) {
key = messageKey;
// Parse off the sequenceId
int p = messageKey.lastIndexOf(":");
if (p >= 0) {
producerSequenceId = Long.parseLong(messageKey.substring(p + 1));
messageKey = messageKey.substring(0, p);
}
producerId = new ProducerId(messageKey);
}
/**
* Sets the transient text view of the message which will be ignored if the
* message is marshaled on a transport; so is only for in-JVM changes to
* accommodate foreign JMS message IDs
*/
public void setTextView(String key) {
this.key = key;
}
public byte getDataStructureType() {
return DATA_STRUCTURE_TYPE;
}
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || o.getClass() != getClass()) {
return false;
}
MessageId id = (MessageId)o;
return producerSequenceId == id.producerSequenceId && producerId.equals(id.producerId);
}
public int hashCode() {
if (hashCode == 0) {
hashCode = producerId.hashCode() ^ (int)producerSequenceId;
}
return hashCode;
}
public String toString() {
if (key == null) {
key = producerId.toString() + ":" + producerSequenceId;
}
return key;
}
/**
* @openwire:property version=1 cache=true
*/
public ProducerId getProducerId() {
return producerId;
}
public void setProducerId(ProducerId producerId) {
this.producerId = producerId;
}
/**
* @openwire:property version=1
*/
public long getProducerSequenceId() {
return producerSequenceId;
}
public void setProducerSequenceId(long producerSequenceId) {
this.producerSequenceId = producerSequenceId;
}
/**
* @openwire:property version=1
*/
public long getBrokerSequenceId() {
return brokerSequenceId;
}
public void setBrokerSequenceId(long brokerSequenceId) {
this.brokerSequenceId = brokerSequenceId;
}
public boolean isMarshallAware() {
return false;
}
public MessageId copy() {
MessageId copy = new MessageId(producerId, producerSequenceId);
copy.key = key;
copy.brokerSequenceId = brokerSequenceId;
return copy;
}
/**
* @param o
* @return
* @see java.lang.Comparable#compareTo(java.lang.Object)
*/
public int compareTo(MessageId other) {
int result = -1;
if (other != null) {
result = this.toString().compareTo(other.toString());
}
return result;
}
}