Sameeh Harfoush [http://community.jboss.org/people/sameeh.harfoush] replied to 
the discussion

"jPDL vs. another process definition language"

To view the discussion, visit: http://community.jboss.org/message/533483#533483

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Hello,

I have been reading JPDL documentation and realized that we can add our custom 
implantation java classes to handle workflows according to some business 
requirements
We achieve such customization by implementing
* Custom actions by implanting *ActionHandler* interface 
* Decision handlers  by implementing *DecisionHandler* interface
* Task assignment handlers by extending *AssignmentHandler* interface
* Event listeners by extending *EventListener* interface
* Custom external activity behavior by extending *ExternalActivityBehaviour* 
interface
* User defined java classes and scripts by using java and script JPDL tags 

This can save lots of time and effort to develop a definition language and 
parser
I attached a file, that I got from JBPM documentationm, that contains examples 
on how to use the above listed handlers

1. So can      we use the above interfaces and implement them to have classes 
that behave      according to our business needs?
2. Is there a limitation to what extent we can control JPDL actions, decision, 
tasks, events, and activities behavior ?


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