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<h1>Embedded Example</h1>
<p>This example shows how to setup and run HornetQ embedded.</p>
<p>HornetQ was designed to use POJOs (Plain Old Java Objects), what makes embedding HornetQ as simple as instantiating a few objects.</p>
<p>In this example, we are using two jars:</p>
<ul>
<li>hornetq-server.jar</li>
<li>netty.jar</li>
</ul>
<p>HornetQ Embedded could be used from very simple use cases with only InVM support to very complex cases with clustering, persistence and fail over.</p>
<h2>Example step-by-step</h2>
<p><i>To run the example, simply type <code>mvn -Pexample</code> from this directory</i></p>
<p>In this we don't use any configuration files. (Everything is embedded). We simply instantiate ConfigurationImpl, HornetQServer, start it and operate on JMS regularly</p>
<ol>
<li>Create the Configuration, and set the properties accordingly</li>
<pre class="prettyprint">
Configuration configuration = new ConfigurationImpl();
configuration.setEnablePersistence(false);
configuration.setSecurityEnabled(false);
configuration.getAcceptorConfigurations().add(new TransportConfiguration(InVMAcceptorFactory.class.getName()));
</pre>
<li>Create and start the server</li>
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HornetQServer server = HornetQ.newHornetQServer(configuration);
server.start();
</pre>
<li>As we are not using a JNDI environment we instantiate the objects directly</li>
<pre class="prettyprint">
ServerLocator serverLocator = HornetQClient.createServerLocatorWithoutHA(new TransportConfiguration(InVMConnectorFactory.class.getName()));
ClientSessionFactory sf = serverLocator.createSessionFactory();
</pre>
<li>Create a Core Queue</li>
<pre class="prettyprint">
ClientSession coreSession = sf.createSession(false, false, false);
final String queueName = "queue.exampleQueue";
coreSession.createQueue(queueName, queueName, true);
coreSession.close();
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<li>Create the session and producer</li>
<pre class="prettyprint">
session = sf.createSession();
ClientProducer producer = session.createProducer(queueName);
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<li>Create and send a Message</li>
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ClientMessage message = session.createMessage(false);
message.putStringProperty(propName, "Hello sent at " + new Date());
System.out.println("Sending the message.");
producer.send(message);
</pre>
<li>Create the message consumer and start the connection</li>
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ClientConsumer messageConsumer = session.createConsumer(queueName);
session.start();
</pre>
<li>Receive the message</li>
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ClientMessage messageReceived = messageConsumer.receive(1000);
System.out.println("Received TextMessage:" + messageReceived.getProperty(propName));
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<li>Be sure to close our resources!</li>
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if (sf != null)
{
sf.close();
}
</pre>
<li>Stop the server</li>
<pre class="prettyprint">
server.stop();
</pre>
</ol>
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