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Messaging and ESB
Implementing Messaging : Consuming messages : Subscribing to a topic
 

Subscribing to a topic

In the Pub/Sub domain, applications subscribe to topics of interest. The application calls the subscribe procedure in pubsubsession.p or jmssession.p with the topic name and a handle to the Message Consumer object. The application implements a message-handling routine for handling the incoming messages, as well as a Message Consumer object that contains the message handler and provides context to the application when it processes messages.
* Durable subscriptions