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MQSeries.net Forum Index » Workflow Engines - IBM MQ Workflow & Business Process Choreographer » Invoking Java class as activity implementation in webclient

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anuppc
PostPosted: Wed Jan 21, 2004 8:22 am    Post subject: Invoking Java class as activity implementation in webclient Reply with quote

Voyager

Joined: 22 Oct 2002
Posts: 93
Location: Montreal
Hi,

I have been trying to figure out a standard way to invoke ejbs from workflow. We have a customized webclient. The activity implementations are usually jsps. Is it a good practice to invoke ejb by using the jsp as the ejb client? For manual activities it may be a reasonable approach! What about automatic activities?

This is what i attempted to do ... unfortunately i could not get what i wanted...

In the original fdl i had a manual Activity B which had an associated program ProgramB.jsp ... which resides in the /programs folder of the web application.

I modified the fdl to make the Activity B as automatic. The ProgramB properties were also altered to "run unattended".

To Invoke the test java class i tried using the fmcoxjvm.dll to invoke automatic activity. I ran the dll in unfenced mode. The java class was passed as Command line parameters.

Do i have to provide the path to fmcoxjvm.dll ? Where do i put the java class? Under /programs folder of the web application?

Im using MQWorkflow 3.4 and websphere 5 .(both on the same box).

thanks

Anup
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anuppc
PostPosted: Wed Jan 21, 2004 8:28 am    Post subject: Reply with quote

Voyager

Joined: 22 Oct 2002
Posts: 93
Location: Montreal
By the way had a look at the wa03 support pack... too bad it is based on websphere 3.5 uggghh.... and has brief explanation... if anyone has implemented standard framework to invoke java classes/ejbs as activity implementation do let me know.

Thanks.
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anuppc
PostPosted: Wed Jan 21, 2004 10:46 am    Post subject: Reply with quote

Voyager

Joined: 22 Oct 2002
Posts: 93
Location: Montreal
I tried the same with the fat client... made some modifications in the fdl too to test my setup... in the program properties i set "path and file name" to C:\Program Files\IBM WebSphere MQ Workflow\BIN\fmcnshow.exe

It still didnt invoke! The activity is still in ready state.. is there anything wrong with what iam trying to do? how do i debug?

Thanks
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Ratan
PostPosted: Wed Jan 21, 2004 11:23 am    Post subject: Reply with quote

Grand Master

Joined: 18 Jul 2002
Posts: 1245
When the Activity is automatic there is nothing to do on the webClient.

Run a PEA with the user you assigned for the automatic activity on the server side.

have the EJB (or Whatever) be accessible to your PEA.
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anuppc
PostPosted: Wed Jan 21, 2004 11:36 am    Post subject: Reply with quote

Voyager

Joined: 22 Oct 2002
Posts: 93
Location: Montreal
Run a PEA with the user you assigned for the automatic activity on the server side.

what do u mean by that? user is admin and i thought the program being "run unattended" would run automatically without any intervention.

i have the activity modeled as automatic and i have simple batch file exec.bat which has a command like

set path=blah blah

java Test

The batch file is defined for the associated program's windows NT tab
It doesnt seem to invoke the batch file..

Any ideas...thanks

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Ratan
PostPosted: Wed Jan 21, 2004 1:42 pm    Post subject: Reply with quote

Grand Master

Joined: 18 Jul 2002
Posts: 1245
Where do you expect the program to run?

Ans: PEA.
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