topic Re: how to override ServiceTaskDelegateExpressionActivityBehavio in Alfresco Archive

how to override ServiceTaskDelegateExpressionActivityBehavio

workflowuser2 — Tue, 17 Jul 2012 22:26:52 GMT

HiI need to override ServiceTaskDelegateExpressionActivityBehaviorublic class CustomServiceTaskDelegateExpressionActivityBehavior extends ServiceTaskDelegateExpressionActivityBehavior {public CustomServiceTaskDelegateExpressionActivityBehavior(Expression expression) { super(expression);}publ

Re: how to override ServiceTaskDelegateExpressionActivityBehavio

frederikherema1 — Wed, 18 Jul 2012 06:09:29 GMT

Since the expression field is protected and has no accessor, you won't get in out in the normal way. I can think of 3 solutions, depending on what you're trying to reach:

Instead of overriding the class, try leveraging the ExpressionManagers resolvers. You can add an additional ELResolver in the chain of resolver, which will be called when an expression is evaluated. If the object requested is one you need "special" classloading for, do your fancy magic in the ELResolver and return it. The delegate will just be called as usual.

Use reflection to extract field from delegateBehavior (*fishy*)

Use custom activiti-version, modifying the BPMNParse

Re: how to override ServiceTaskDelegateExpressionActivityBehavio

ronald_van_kuij — Wed, 18 Jul 2012 07:45:07 GMT

My first question would be: why?

Re: how to override ServiceTaskDelegateExpressionActivityBehavio

workflowuser2 — Wed, 18 Jul 2012 17:51:55 GMT

My first question would be: why?

Hi Ronald,

I am trying some changes in the classloaders as mentioned in the following post:
http://forums.activiti.org/en/viewtopic.php?f=4&t=1433&start=0

The above might be helpful in solving an issue I have:

http://forums.activiti.org/en/viewtopic.php?f=6&t=4259

Activiti newbie