[rules-users] LHS Dao Calls

Mon Apr 9 18:22:46 EDT 2007

Anyone Please ? Database calls from LHS ..

when

item : ItemVo(itemStatusCode != ItemVo.STATUS_ACTIVE ,
(itemValidationDao.isValidItemStatus(itemStatusCode)))

anyone has the right syntax ..  thanks

________________________________

From: Sanjay Singh - s0singh 
Sent: Monday, April 09, 2007 8:33 AM
To: 'Rules Users List'
Subject: RE: [rules-users] LHS Dao Calls

Has anyone in the users list tested any DAO calls from condition side
.... without using from keyword .. something like this .. i know i am
supposed to test this in trunk but is there anyone who has actually done
it either in trunk or M1

________________________________

From: rules-users-bounces at lists.jboss.org
[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Edson Tirelli
Sent: Friday, April 06, 2007 1:50 PM
To: Rules Users List
Subject: Re: [rules-users] LHS Dao Calls

   Sanjay, 

   Are you trying with trunk? there was an issue using globals inside
predicates that was fixed after M1... 
   Let me know...

   []s
   Edson

2007/4/6, Sanjay Singh - s0singh < Sanjay.Singh at wal-mart.com>: 

	Thanks Edson .. i tried with these syntaxes but does not work ..
any other clues  ? just to let you know that itemValidationDao is
declared global and itemvo is asserted 

	when

	item : ItemVo(itemStatusCode != ItemVo.STATUS_ACTIVE ,
(itemValidationDao.isValidItemStatus(itemStatusCode)))

	Caused by: org.drools.rule.InvalidRulePackage: unknown:15:70
Unexpected token '('

	unknown:16:1 mismatched token: [@160,673:676='then',<33>,16:1];
expecting type ')'

	unknown:17:29 Unexpected token '"itemStatusCode"'

	unknown:18:22 Unexpected token '"Item is cross ref prime"'

	when

	item : ItemVo(statusCode : itemStatusCode !=
ItemVo.STATUS_ACTIVE , itemValidationDao.isValidItemStatus(statusCode))

	Caused by: org.drools.rule.InvalidRulePackage: unknown:15:70
Unexpected token 'itemValidationDao'

	unknown:16:1 mismatched token: [@158,671:674='then',<33>,16:1];
expecting type ')'

	unknown:17:29 Unexpected token '"itemStatusCode"'

	unknown:18:22 Unexpected token '"Item is cross ref prime"'

	This also does not seem to work -- i have 3.1.0 M1 version .. 
	item : ItemVo ( itemStatusCode == ItemVo.STATUS_ACTIVE | ==
ItemVo.STATUS_DELETE )
	while this still works :
	item : ItemVo(itemStatusCode == ItemVo.STATUS_INACTIVE) or
ItemVo(itemStatusCode == ItemVo.STATUS_DELETE)

________________________________

	From: rules-users-bounces at lists.jboss.org
[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Edson Tirelli
	Sent: Friday, April 06, 2007 10:22 AM
	To: Rules Users List
	Subject: Re: [rules-users] LHS Dao Calls

	   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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	*** This email and any files transmitted with it are
confidential
	and intended solely for the individual or entity to whom they
are
	addressed. If you have received this email in error destroy it
	immediately.
******************************************************
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****************************
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	_______________________________________________
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	https://lists.jboss.org/mailman/listinfo/rules-users

-- 
  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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*** This email and any files transmitted with it are confidential
and intended solely for the individual or entity to whom they are
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**************** Wal-Mart Confidential ****************************
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