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ActiveMQ example source code file (VirtualTopic.java)
The ActiveMQ VirtualTopic.java source code/** * 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; public ActiveMQDestination getVirtualDestination() { return new ActiveMQTopic(getName()); } public Destination intercept(Destination destination) { return selectorAware ? new SelectorAwareVirtualTopicInterceptor(destination, getPrefix(), getPostfix()) : new VirtualTopicInterceptor(destination, getPrefix(), getPostfix()); } 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; } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ VirtualTopic.java source code file: |
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