2 Replies Latest reply on Jul 30, 2010 6:10 AM by fmancini

Automatically restart process execution flow from a specific state

fmancini Jul 30, 2010 5:17 AM

Hi all,

can anyone help me with the following problem?

My process definition is something like this: 'STATE A' --> 'NODE 1' --> 'NODE 2' --> 'STATE B'.

'NODE 2' is querying a DB to retrieve some information. If the DB system is not available, an exception is thrown and JBPM takes the execution flow back to 'STATE B', and this works fine.

My problem is that I want to automatically leave the node 'STATE A' after a fixed timed period, let's say 10 seconds. Is this possible?

I've tried adding a 'node-enter' event on the node 'STATE A' but it seems like it's not fired when the exception is thrown.

I'm using JBPM3.2.8 on JBOSS5.1.

Thank you in advance for any suggestion.

1. Re: Automatically restart process execution flow from a specific state

h.peter Jul 30, 2010 5:36 AM (in response to fmancini)

Hello,

Why don't you try to use a Java node to run the query, catch possible exceptions and set a flag in the execution. You could then add a decision node which either routes the execution to its normal way or to a tempoparly 'DB query failure' state which has a timed transition that leads back to the first node.

Regards,
Peter
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2. Re: Automatically restart process execution flow from a specific state

fmancini Jul 30, 2010 6:10 AM (in response to h.peter)

Thank you Peter, this is a nice idea.
Anyway I'd like to have a global behavior for all the nodes and not delegate the error management to the process designer.
But I'll adopt your solution if I won't be able to find a global solution!

Regards,
F
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