topic Re: How to resolve variables outside process context in Alfresco Archive

How to resolve variables outside process context

newbbie — Thu, 02 Aug 2012 04:12:24 GMT

I am implementing a "Global Variable" which could be outside the process context and it is not like the process level "global variable" as mentioned in Activiti. 1. I created a resolver api (based on this post http://forums.activiti.org/en/viewtopic.php?f=3&t=268&view=previous), just to reso

Re: How to resolve variables outside process context

frederikherema1 — Thu, 02 Aug 2012 06:32:36 GMT

No need to fiddle around with the Variable-scope. Instead, create a custom ExpressionManager (extending the default one) which adds a new ELResolver to the chain. The ELResolver should "kick in" when the "key" of the property starts with "global_".

See http://forums.activiti.org/en/viewtopic.php?f=6&t=4291&p=16719&hilit=expressionManager#p16719 for details

Re: How to resolve variables outside process context

newbbie — Sun, 05 Aug 2012 18:11:58 GMT

Thank you very much for your reply.

I have a custom resolver, which is backed up by a map. The information of this map comes from some persistent source, ex. a database/registry, does it mean, it is the resolver's responsibility to fetch the data from the database, or the custom expression manager? what is the common way to do it?

2nd question: how to test the following case: "passing a JPA object as an input parameter to a java service task"?

Thanks,
newbbie

Re: How to resolve variables outside process context

naag — Thu, 09 Aug 2012 09:50:44 GMT

Hi newbie,

1) Why don't you look at the Activiti sources and see how it's done there? E.g. look at the classes VariableScopeResolver and VariableScopeResolverFactory. You should see that it's the Resolver's responsibility if I'm not mistaken…

2) What exactly do you mean? 😉

Peter

Re: How to resolve variables outside process context

newbbie — Thu, 16 Aug 2012 22:37:32 GMT

Thanks Peter. You are right about the first question. For the second question, I found some tests in the repository, which helped out.

Thanks,
newbbie