Re: [rules-users] Need help related to collection of data accessing in rule file.
I have the same problem as I'm trying to create a decision table via excel
where the fact is a root object A where A has a collection B, and B has a
collection C. My rules are based out of the instance A, loop for each object
in B, and within that, loop each object in C. Not sure how I can write an
expression for the same.
From the examples, I see that one can access a particular element in A
by
$a.listname[1] but in my case, I need to access all elements in the loop.
Any suggestions?
prasad raju sagi wrote:
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 -> 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(a)yahoo.com>
To: rules-users(a)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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