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How to handle Response Failure in JMS and MDBs  RSS feed

Srinivasarao Borra
Posts: 7
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This is my first posting to this forum.Here is my problem.

My requirement is to make a copy of the selected record into all the child tables.While this functionality is happening at the back,the user should see the progress page in the front end.These two tasks should be done simultaneously.To implement this, I have chosen the JMS and MDB concept.

At the Back end I am sending a request message into the request queue and it will invoke the MDB and in turn it will invoke the business logic.Upon completeing this business logic(updating all child tables) I am sending the response into the response queue.At the front end the user is getting the progress page and it will be refreshed after every 3 seconds for checking whether there is any response in the response queue.If there is a response in the queue it is working fine.

What my prblem now is , when there is a problem in sending the response to the response queue itself how to make the user know that there is a problem with the response but the task got completed.He is still getting the progress page and it is getting refreshed even though there is no message.

Here is my technical flow.

1)Business Logic Flow.
TreeCopyAction->Delegate->EJB->send the request message->invokes MDB-> invokes business logic->sends the response to response queue.

2)Front End flow.
Progress JSP->ProgressAction->Delegate->EJB->check for messages.For every 3 seconds this JSP gets refreshed and it will check for the response.

Both the steps 1 & 2 are happening simultaneously.

Shall anybody suggest me the solution.Very Urgent.
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