Problem with Background Callable Object

Hi All,
I am trying to create a background callable object in GP. From my understanding and according to the help document here is what I did:
- Generated a deployable proxy development component using the Top down approach.
- Created a Java Development component which implements the interface IGPBackgroundCallableObject. This Development component has the proxy object generated in Step 1 in the Used DCs. Internally this class does a JNDI lookup to the deployed Webservice Client and executes the webservice. Then I add this class as a public part in the Development Component.
- Create a J2EE Library that has the public part of the class generated in Step 2 as the Used DCs.
- Deploy the Library and use that in the GP Design time to create the Callable object.
Following are the problems that I am facing:
- The Java class that consumes the deployable proxy does not seem to recognize the classes that are present in the proxy object. Even though there is a reference to it.
- If we try to include the proxy project in the Java Build path of the class it simply removes the link at build time.
- At one instance it somehow succeeded during the build phase and I deployed the library to the J2EE engine but while testing the callable project it came up with a NoClassDef exception. Basically it was unable to find the proxy object’s classes.
I am not sure if I am doing anything wrong or the process that I am following is not right. I would appreciate if anyone could help me understand what the problem is and how do we go about achieving the above scenario.
Best regards,
Sudhi

Hi Jorgen,
This behavior is completely normal. It can seem awkward but what you described is somehow logical.
Let's say you have three actions, the second one is the email notification. When completing the first action, the second action is triggered. As it is a background callable object, it is put into the queue and wait for processing. As the refresh of the screen is faster than the processing of the callable object, the next action (the third) is not yet active/ready to be processed.
When the email is sent (i.e. the background callable object executed), a callback takes place and the next activity is triggered. Then, the 3 action is active and can be shown.
Due to technical restriction of Web Dynpro, it is not possible to refresh the screen when the action is ready to be processed. The user has to refresh it explictly.
With SP12, the processing of the queue has been improved and it's much more faster than before. The "problem" you noticed shouldn't be there anymore.
Hope this helps.
David

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