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Diffstat (limited to 'M4-RCs/qpid/java/client/example/src/main/java/org/apache/qpid/example/jmsexample/pubsub/Listener.java')
| -rw-r--r-- | M4-RCs/qpid/java/client/example/src/main/java/org/apache/qpid/example/jmsexample/pubsub/Listener.java | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/M4-RCs/qpid/java/client/example/src/main/java/org/apache/qpid/example/jmsexample/pubsub/Listener.java b/M4-RCs/qpid/java/client/example/src/main/java/org/apache/qpid/example/jmsexample/pubsub/Listener.java deleted file mode 100644 index 1a3d40041d..0000000000 --- a/M4-RCs/qpid/java/client/example/src/main/java/org/apache/qpid/example/jmsexample/pubsub/Listener.java +++ /dev/null @@ -1,214 +0,0 @@ -/* 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.qpid.example.jmsexample.pubsub; - -import java.util.Properties; - -import javax.jms.BytesMessage; -import javax.jms.ConnectionFactory; -import javax.jms.ExceptionListener; -import javax.jms.JMSException; -import javax.jms.Message; -import javax.jms.MessageListener; -import javax.jms.Session; -import javax.jms.TextMessage; -import javax.jms.Topic; -import javax.jms.TopicConnection; -import javax.jms.TopicSession; -import javax.naming.Context; -import javax.naming.InitialContext; - -/** - * The example creates a TopicSubscriber on the specified - * Topic and uses a MessageListener with this TopicSubscriber - * in order to enable asynchronous delivery. - */ -public class Listener -{ - /* Used in log output. */ - private static final String CLASS="Listener"; - - /* An object to synchronize on. */ - private final static Object _lock=new Object(); - - /* A boolean to indicate a clean finish. */ - private static int _finished=0; - - /* A boolean to indicate an unsuccesful finish. */ - private static boolean _failed=false; - - /** - * Run the message consumer example. - * - * @param args Command line arguments. - */ - public static void main(String[] args) - { - Listener listener=new Listener(); - listener.runTest(); - } - - private void createListener(Context ctx,TopicSession session,String topicName) throws Exception{ - // lookup the topic usa - Topic topic=(Topic) ctx.lookup(topicName); - // Create a Message Subscriber - System.out.println(CLASS + ": Creating a Message Subscriber for topic " + topicName); - javax.jms.TopicSubscriber messageSubscriber=session.createSubscriber(topic); - - // Set a message listener on the messageConsumer - messageSubscriber.setMessageListener(new MyMessageListener(topicName)); - - } - - /** - * Start the example. - */ - private void runTest() - { - try - { - Properties properties=new Properties(); - properties.load(this.getClass().getResourceAsStream("pubsub.properties")); - - //Create the initial context - Context ctx=new InitialContext(properties); - - // Declare the connection - ConnectionFactory conFac=(ConnectionFactory) ctx.lookup("qpidConnectionfactory"); - TopicConnection connection=(TopicConnection) conFac.createConnection(); - - // As this application is using a TopicSubscriber we need to set an ExceptionListener on the connection - // so that errors raised within the JMS client library can be reported to the application - System.out.println( - CLASS + ": Setting an ExceptionListener on the connection as sample uses a TopicSubscriber"); - - connection.setExceptionListener(new ExceptionListener() - { - public void onException(JMSException jmse) - { - // The connection may have broken invoke reconnect code if available. - System.err.println(CLASS + ": The sample received an exception through the ExceptionListener"); - System.exit(0); - } - }); - - // Create a session on the connection - // This session is a default choice of non-transacted and uses - // the auto acknowledge feature of a session. - System.out.println(CLASS + ": Creating a non-transacted, auto-acknowledged session"); - TopicSession session=connection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE); - - createListener(ctx,session,"usa"); - createListener(ctx,session,"europe"); - createListener(ctx,session,"news"); - createListener(ctx,session,"weather"); - - // Now the messageConsumer is set up we can start the connection - System.out.println(CLASS + ": Starting connection so TopicSubscriber can receive messages"); - connection.start(); - - // Wait for the messageConsumer to have received all the messages it needs - synchronized (_lock) - { - while (_finished < 4 && !_failed) - { - _lock.wait(); - } - } - - // If the MessageListener abruptly failed (probably due to receiving a non-text message) - if (_failed) - { - System.out.println(CLASS + ": This sample failed as it received unexpected messages"); - } - - // Close the connection to the server - System.out.println(CLASS + ": Closing connection"); - connection.close(); - - // Close the JNDI reference - System.out.println(CLASS + ": Closing JNDI context"); - ctx.close(); - } - catch (Exception exp) - { - exp.printStackTrace(); - System.err.println(CLASS + ": Caught an Exception: " + exp); - } - } - - private class MyMessageListener implements MessageListener - { - /* The topic this subscriber is subscribing to */ - private String _topicName; - - public MyMessageListener(String topicName) - { - _topicName=topicName; - } - - /** - * This method is required by the <CODE>MessageListener</CODE> interface. It - * will be invoked when messages are available. - * After receiving the final message it releases a lock so that the - * main program may continue. - * - * @param message The message. - */ - public void onMessage(Message message) - { - try - { - String text; - if (message instanceof TextMessage) - { - text=((TextMessage) message).getText(); - } - else - { - byte[] body=new byte[(int) ((BytesMessage) message).getBodyLength()]; - ((BytesMessage) message).readBytes(body); - text=new String(body); - } - if (text.equals("That's all, folks!")) - { - System.out.println(CLASS + ": Shutting down listener for " + _topicName); - synchronized (_lock) - { - _finished++; - _lock.notifyAll(); - } - } - else - { - System.out.println(CLASS + ": Received message for topic: " + _topicName + ": " + text); - } - } - catch (JMSException exp) - { - System.out.println(CLASS + ": Caught an exception handling a received message"); - exp.printStackTrace(); - synchronized (_lock) - { - _failed=true; - _lock.notifyAll(); - } - } - } - } -} |