WebSphere WebSphere Application Server Network Deployment, Version 6.1.x Operating Systems: AIX, HP-UX, i5/OS, Linux, Solaris, Windows, z/OS

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

About this task

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 using 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 that is 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.

If you want to use a JAX-RPC client to send messages over the service integration bus, you 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 binding namespace is set to indicate that the client uses the messaging bus directly.
  • The endpoint address is set to include the particular destination and (optionally) the format of messages that the client uses.
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:
  • Create an outbound service. An outbound service represents an externally-provided Web service. In this case, requests from the JAX-RPC client pass through the service destination and are then sent on to the service provider defined by the outbound service configuration.
  • Create an inbound service. An inbound service represents a service provided somewhere within or beyond the messaging bus. You can create an inbound service on any existing destination. The creation of an inbound service associates a WSDL port type with the destination. When retargeting to a destination with an inbound service, the client application needs to specify both the destination name and inbound service name, because it is possible to configure more than one inbound service against a single destination. In this case, requests from the JAX-RPC client pass through the destination and then onwards through the service integration bus depending on routing that is done at the initial destination.

To have Web service messages sent directly to a destination using a JAX-RPC client, complete the following steps:

Procedure

  1. Create the JAX-RPC client application.
  2. Create the outbound service or inbound service with which you want the JAX-RPC client application to exchange messages.
  3. Use the administrative console to access the port information for your JAX-RPC client application, as described in Configuring Web service client bindings and Web services client port information.
  4. Override the default SOAP binding for your JAX-RPC client application. Change the binding namespace to http://www.ibm.com/ns/2004/02/wsdl/mp/sib
  5. Override the endpoint that your 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 you change the binding namespace, any JAX-RPC handler lists that were configured for the retargeted port are ignored. For clients that are 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:

Related tasks
Creating a new JAX-RPC handler configuration
Creating a new JAX-RPC handler list
Related reference
Implementing JAX-RPC handlers to access SDO messages
JAX-RPC: Core Web services API in the Java platform
Getting Started with JAX-RPC
A developer introduction to JAX-RPC, Part 2: Mine the JAX-RPC specification to improve Web service interoperability
Support for J2EE Web Services in WebSphere Studio Application Developer V5.1 -- Part 3: JAX-RPC Handlers

Task topic

Terms of use | Feedback


Timestamp icon Last updated: 26 February 2009
http://publib.boulder.ibm.com/infocenter/wasinfo/v6r1/index.jsp?topic=/com.ibm.websphere.pmc.nd.multiplatform.doc/tasks/tjw_jaxrpc_client.html

Copyright IBM Corporation 2004, 2009. All Rights Reserved.
This information center is powered by Eclipse technology. (http://www.eclipse.org)