[rules-users] Need help related to collection of data accessing in rule file.

[prasad raju sagi]

Hi ,

I am trying to create rule  on a fact , which contains arraylist of collection and the object in the collection internally contains an arraylist of another collection of objects.

This looks like  object A contains collection of objects B and B contains collection object C

A ->  blist ( Arraylist<B> )

B -> clist (ArrayList<C> )

C-> dlist( ArrayList<D>)

D-> type ( string)

I am inseting A as fact to the working memory.

I am in confusion state like how to write the rule to place conditions  on collection C. 

Can I use from in the form of nested from in rule statment.
Thanks
Prasad Raju Sagi
Mobile: 847-644-4103 




________________________________
From: Aziz Boxwala <boxwala at yahoo.com>
To: rules-users at lists.jboss.org
Sent: Thursday, June 11, 2009 1:58:28 PM
Subject: [rules-users] process order example not working fully


I am trying to execute a ruleflow and use rules to assign tasks within the ruleflow in Drools 5.0.1. I have a drl file included in my knowledge base that tries to assign a task to a user when a new human task is created. This is based on the example in org.drools.example.process.order. I can't get my code to work. I don't the rules in the example are working either (dslr for the task assignment or the drl for dynamic logging). After some attempts, I found that this condition 
    WorkItemNodeInstance()
does not evaluate to true ever.

Do I have to do anything special to make the WorkItemNodeInstance appear in working memory?

Thanks for any help.

--Aziz


      
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