/**
* 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.broker.region.virtual;
import org.apache.activemq.broker.Broker;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.region.Destination;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.filter.DestinationFilter;
/**
* Creates <a href="http://activemq.org/site/virtual-destinations.html">Virtual
* Topics</a> using a prefix and postfix. The virtual destination creates a
* wildcard that is then used to look up all active queue subscriptions which
* match.
*
* @org.apache.xbean.XBean
*
*
*/
public class VirtualTopic implements VirtualDestination {
private String prefix = "Consumer.*.";
private String postfix = "";
private String name = ">";
private boolean selectorAware = false;
private boolean local = false;
public ActiveMQDestination getVirtualDestination() {
return new ActiveMQTopic(getName());
}
public Destination intercept(Destination destination) {
return selectorAware ? new SelectorAwareVirtualTopicInterceptor(destination, getPrefix(), getPostfix(), isLocal()) :
new VirtualTopicInterceptor(destination, getPrefix(), getPostfix(), isLocal());
}
public void create(Broker broker, ConnectionContext context, ActiveMQDestination destination) throws Exception {
if (destination.isQueue() && destination.isPattern() && broker.getDestinations(destination).isEmpty()) {
DestinationFilter filter = DestinationFilter.parseFilter(new ActiveMQQueue(prefix + DestinationFilter.ANY_DESCENDENT));
if (filter.matches(destination)) {
broker.addDestination(context, destination, false);
}
}
}
public void remove(Destination destination) {
}
// Properties
// -------------------------------------------------------------------------
public String getPostfix() {
return postfix;
}
/**
* Sets any postix used to identify the queue consumers
*/
public void setPostfix(String postfix) {
this.postfix = postfix;
}
public String getPrefix() {
return prefix;
}
/**
* Sets the prefix wildcard used to identify the queue consumers for a given
* topic
*/
public void setPrefix(String prefix) {
this.prefix = prefix;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
/**
* Indicates whether the selectors of consumers are used to determine dispatch
* to a virtual destination, when true only messages matching an existing
* consumer will be dispatched.
* @param selectorAware when true take consumer selectors into consideration
*/
public void setSelectorAware(boolean selectorAware) {
this.selectorAware = selectorAware;
}
public boolean isSelectorAware() {
return selectorAware;
}
public boolean isLocal() {
return local;
}
public void setLocal(boolean local) {
this.local = local;
}
}