[rules-users] LHS Dao Calls

[Edson Tirelli]

   Sunjay,

   Methods called by using the "from" CE are expected to return a collection
of VO's, not boolean results. For your case, probably what you want is
something like:

ItemVo( statusCode : itemStatusCode != null, (*
itemValidationDao.isValidItemStatus(statusCode)*) )

   A predicate allow you to call a method returning a boolean value and use
it as a constraint.

   []s
   Edson

2007/4/5, Sanjay Singh - s0singh <Sanjay.Singh at wal-mart.com>:
>
>  Here is a quick test i was trying to do for calling the dao in LHS but it
> fails .. what am i missing ..
>
> global com.itemfile.item.dao.ItemValidationDao itemValidationDao;
>
> global com.itemfile.rules.ValidationErrorMap errors;
>
> rule "Item should have a valid status"
>
> when
>
> ItemVo( statusCode : itemStatusCode != null)
>
> *ItemVo( statusCode == true ) from itemValidationDao.isValidItemStatus
> (statusCode)*
>
> then
>
> errors.addValidationError("nullItemStatusCode","Item Status Code is
> null");
>
> System.out.println("Item Base Defaults Called" +
> itemValidationDao.isValidItemStatus(statusCode));
>
> System.out.println("Item Status Code is null");
>
> end
>
> Caused by: org.drools.rule.InvalidRulePackage: unknown:32:28 Unexpected
> token 'itemValidationDao'
>
> isValidItemStatus ()  method returns a boolean and i need to check if
> thats true than go to the RHS side ....  somehow it does not recognize
> itemValidationDao in LHS side .. RHS same call works ...
>
>
> Can anybody suggest how to call database in LHS ...
>
> thanks
>
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-- 
  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
  Office: +55 11 3124-6000
  Mobile: +55 11 9218-4151
  JBoss, a division of Red Hat @ www.jboss.com
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