Example: Getting messages from a WS-Notification pull point

Example code that describes a client acting in the pull style consumer role, requesting messages from a pull point.

Example

This example is based on using the Java API for XML-based remote procedure call (JAX-RPC) APIs in conjunction with code generated using the WSDL2Java tool (run against the Notification Broker WSDL generated as a result of creating your WS-Notification service point) and WebSphere® Application Server APIs and SPIs.

// Look up the JAX-RPC service. The JNDI name is specific to your Web services client implementation
InitialContext context = new InitialContext();
javax.xml.rpc.Service service = (javax.xml.rpc.Service) context.lookup(
    "java:comp/env/services/NotificationBroker");

// Get a stub for the port on which you want to invoke operations
NotificationBroker stub = (NotificationBroker) service.getPort(NotificationBroker.class);

// Associate the request with a pull point. The pullPointEPR is the EndpointReference returned
// from invoking the CreatePullPoint operation
((Stub) stub)._setProperty(WSAConstants.WSADDRESSING_DESTINATION_EPR, pullPointEPR);

// Specify the number of messages you want to retrieve
Integer numberOfMessages = new Integer(2);

// Create any optional information
SOAPElement[] optionalInformation =  new SOAPElement[] {};

// Create the request information
GetMessages request = new GetMessages(numberOfMessages, optionalInformation);

// Invoke the GetMessages operation by calling the associated method on the stub
GetMessagesResponse response = stub.getMessages(request);

// Get the messages returned from the response
NotificationMessage[] messages = response.getMessages();



Related concepts
JAX-RPC
Learning about WS-Notification
Related tasks
Writing a WS-Notification application that exposes a Web service endpoint
Writing a WS-Notification application that does not expose a Web service endpoint
WS-Notification - publish and subscribe messaging for Web services
Securing WS-Notification
Developing applications that use WS-Notification
Related reference
Example: Subscribing a WS-Notification consumer
Example: Pausing a WS-Notification subscription
Example: Publishing a WS-Notification message
Example: Creating a WS-Notification pull point
Example: Registering a WS-Notification publisher
Example: Notification consumer Web service skeleton
Sharing event notification messages with other bus client applications
WS-Notification troubleshooting tips
Related information
WSDL2Java command for JAX-RPC applications
Reference topic Reference topic    

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Last updatedLast updated: Aug 30, 2013 4:53:43 PM CDT
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