Examples of org.activemq.message.ActiveMQTopic

org.activemq.message.ActiveMQTopic
A Topic object encapsulates a provider-specific topic name. It is the way a client specifies the identity of a topic to JMS API methods. For those methods that use a Destination as a parameter, a Topic object may used as an argument . For example, a Topic can be used to create a MessageConsumer and a MessageProducer by calling:
- Session.CreateConsumer(Destination destination)
- Session.CreateProducer(Destination destination)
Many publish/subscribe (pub/sub) providers group topics into hierarchies and provide various options for subscribing to parts of the hierarchy. The JMS API places no restriction on what a Topic object represents. It may be a leaf in a topic hierarchy, or it may be a larger part of the hierarchy.

The organization of topics and the granularity of subscriptions to them is an important part of a pub/sub application's architecture. The JMS API does not specify a policy for how this should be done. If an application takes advantage of a provider-specific topic-grouping mechanism, it should document this. If the application is installed using a different provider, it is the job of the administrator to construct an equivalent topic architecture and create equivalent Topic objects. @see javax.jms.Session#createConsumer(javax.jms.Destination) @see javax.jms.Session#createProducer(javax.jms.Destination) @see javax.jms.TopicSession#createTopic(String)

                return new ActiveMQQueue(name);
            }
        });
        data.put("dynamicTopics", new LazyCreateContext() {
            protected Object createEntry(String name) {
                return new ActiveMQTopic(name);
            }
        });


        return new ReadOnlyContext(environment, data);
    }

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    /**
     * Factory method to create new Topic instances
     */
    protected Topic createTopic(String name) {
        return new ActiveMQTopic(name);
    }

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    /**
     * @see org.activemq.service.MessageContainerAdmin#empty()
     */
    public void empty() throws JMSException {
        if( manager.isConsumerActiveOnDestination(new ActiveMQTopic(destinationName)) ) {
            messageStore.removeAllMessages();
        } else {
            throw new JMSException("Cannot empty a topic while it is use.");
        }
    }

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    protected int prefetchValue = 10000000;


    protected Destination createDestination() {
        String subject = getClass().getName();
        if (isTopic) {
            return new ActiveMQTopic(subject);
        }
        else {
            return new ActiveMQQueue(subject);
        }
    }

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    protected JabberWireFormat format = new JabberWireFormat();


    public void testWrite() throws Exception {
        ActiveMQTextMessage message = new ActiveMQTextMessage();
        //message.setJMSType("id");
        message.setJMSReplyTo(new ActiveMQTopic("my.source"));
        message.setJMSDestination(new ActiveMQTopic("my.target"));
        message.setJMSCorrelationID("abc123");
        message.setText("hello there");


        StringWriter buffer = new StringWriter();
        PrintWriter out = new PrintWriter(buffer);

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        message.setJMSDestination(createDestination(subject));
        return message;
    }


    protected Destination createDestination(String subject) {
        return new ActiveMQTopic(subject);
    }

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import junit.framework.TestCase;


public class TopicExpressionConverterTest extends TestCase {
    
    public void testConvert() {
        ActiveMQTopic topic1 = new ActiveMQTopic("Hello");
        TopicExpressionType type = TopicExpressionConverter.toTopicExpression(topic1);
        ActiveMQTopic topic2 = TopicExpressionConverter.toActiveMQTopic(type);
        assertEquals(topic1, topic2);        
    }

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    /**
     * Factory method to create new Topic instances
     */
    protected Topic createTopic(String name) {
        return new ActiveMQTopic(name);
    }

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    public void XtestSendNotify() throws Exception {
        
        ActiveMQNotificationBroker broker = new ActiveMQNotificationBroker();
        ActiveMQConnection connection = broker.getConnection();
        Session session = connection.createSession(false, 0);
        ActiveMQTopic topic = new ActiveMQTopic("Test");
        MessageConsumer consumer = session.createConsumer(topic);
        
        NotifyDocument request = NotifyDocument.Factory.newInstance();
        Notify notify = request.addNewNotify();
        NotificationMessageHolderType messageHolder = notify.addNewNotificationMessage();

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     * @throws JMSException if the session fails to create a topic due to some internal error.
     * @since 1.1
     */
    public Topic createTopic(String topicName) throws JMSException {
        checkClosed();
        return new ActiveMQTopic(topicName);
    }

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Related Classes of org.activemq.message.ActiveMQTopic

JMSClient

org.activemq.ActiveMQConnectionFactory

org.activemq.ActiveMQSession

org.activemq.advisories.ConnectionAdvisor

org.activemq.broker.impl.AdvisorySupportTest

org.activemq.filter.DestinationMapTest

org.activemq.io.impl.ActiveMQMessageReaderTest

org.activemq.io.impl.ConsumerInfoReaderTest

org.activemq.io.impl.MessageAckReaderTest

org.activemq.io.impl.ProducerInfoReaderTest

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