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Sending web service messages directly over the bus from a JAX-RPC client

Use this task to send web service messages over a bus by retargeting the JAX-RPC client.

Java API for XML-based remote procedure calls (JAX-RPC) client applications send and receive web service request and response messages. JAX-RPC client applications that use the IBM JAX-RPC run-time environment can do this in a number of different ways, depending on the bindings in the WSDL document that they are developed against, and the configuration data used at run time.

For an introduction to basic JAX-RPC programming concepts, including the JAX-RPC client and server programming models, see Getting Started with JAX-RPC.

To use a JAX-RPC client to send messages over the service integration bus, we have two choices:

Retargeting involves setting the following two values into the client application deployment descriptor, or specifying them dynamically at run time from within the client application:

The destination also needs to be configured so that it knows the port type of messages that the JAX-RPC client is using. There are two ways to achieve this:

To have web service messages sent directly to a destination using a JAX-RPC client:


Tasks

  1. Create the JAX-RPC client application.
  2. Create the outbound service or inbound service with which we want the JAX-RPC client application to exchange messages.

  3. Use the administrative console to access the port information for our JAX-RPC client application, as described in Configure web services client bindings and Web services client port information.
  4. Override the default SOAP binding for our JAX-RPC client application. Change the binding namespace to http://www.ibm.com/ns/2004/02/wsdl/mp/sib
  5. Override the endpoint that the JAX-RPC client application uses to send web service requests. The new endpoint should use the sib: URL syntax and include either the outbound service destination name, or both the inbound service name and its corresponding destination name.


What to do next

After we change the binding namespace, any JAX-RPC handler lists that were configured for the retargeted port are ignored. For clients developed against WSDL with a SOAP binding, retargeting directly to the bus causes the handlers to be ignored. However if the client is developed against the non-bound WSDL for the service, retargeting to the bus is not considered to be changing the binding namespace, and so the handler information is retained. In this case the JAX-RPC handlers are called with the SDOMessageContext subclass.

Associated reference information:


Subtopics

  • Implement JAX-RPC handlers to access SDO messages
  • JAX-RPC: Core web services API in the Java platform
  • Getting Started with JAX-RPC
  • Support for J2EE Web Services in WebSphere Studio Application Developer V5.1 -- Part 3: JAX-RPC Handlers
  • Create a new JAX-RPC handler configuration
  • Create a new JAX-RPC handler list