Fw: [rules-users] rules questions...

Sun Jan 7 16:49:48 EST 2007

ok..after playing a while with this global thing...i found out that global variables cant be asserted...

any other idea of how to use an asserted arrayList on the consequence without writing it on the conditions?

Joel G. Rivera-Gonzalez
PRT

"The first 90% of a project takes 90% of the time, the last 10% takes the other 90% of the time" - Murphy's Law

----- Original Message ----
From: Joel G. Rivera-González <el_pio at yahoo.com>
To: drools <rules-users at lists.jboss.org>
Sent: Sunday, January 7, 2007 10:48:50 AM
Subject: Re: Fw: [rules-users] rules questions...

thanks for your input...this is exactly what i was looking for !

:)

Joel G. Rivera-Gonzalez
PRT

"The first 90% of a project takes 90% of the time, the last 10% takes the other 90% of the time" - Murphy's Law

----- Original Message ----
From: Steven Williams <stevenw at objectconsulting.com.au>
To: Joel G. Rivera-González <el_pio at yahoo.com>
Cc: rules-users at lists.jboss.org
Sent: Sunday, January 7, 2007 3:53:34 AM
Subject: Re: Fw: [rules-users] rules questions...

Hi Joel,

I think you should rather use a global for the ArrayList:

global java.util.List myList

rule
 "cancel_menu"
  when
        MegaTransferObject(other_EffectiveOrderTypeDsl != null, other_EffectiveOrderTypeDsl == 
Constants.NEW_OPEN_ORDER_TYPE)
        not MegaTransferObject(orders_FkOrderStatusId != null, orders_FkOrderStatusId == Constants.PENDING_TO_BE_SUBMITTED_ORDER_STATUS)    
  then
        myList.add(new String[]{Constants.SERVICE_ASSURANCE_TREE_MENU_DSL
, Constants.SERVICE_ASSURANCE_MENU_CANCEL});    
end

btw - you don't need to put "and" at the end of each constraint.

cheers
Steve

On 1/7/07, 
Joel G. Rivera-González <el_pio at yahoo.com> wrote:

this is a one of my rules...
rule "cancel_menu"

    when
        arrayList : ArrayList()
        MegaTransferObject(other_EffectiveOrderTypeDsl != null, other_EffectiveOrderTypeDsl == 
Constants.NEW_OPEN_ORDER_TYPE) and
        not MegaTransferObject(orders_FkOrderStatusId != null, orders_FkOrderStatusId == Constants.PENDING_TO_BE_SUBMITTED_ORDER_STATUS
)
    then
        arrayList.add(new String[]{Constants.SERVICE_ASSURANCE_TREE_MENU_DSL
, Constants.SERVICE_ASSURANCE_MENU_CANCEL});
end

i do an assert of an empty arrayList...
when i use this 
 arrayList : ArrayList() on the when the rule fire an error...why?
will the ArrayList be the same on all the rules (i think it will but want to make sure)

Joel G.
 Rivera-Gonzalez
PRT

"The first 90% of a project takes 90% of the time, the last 10% takes the other 90% of the time" - Murphy's Law

----- Original Message ----
From: Kumaran S <
kumaran.shanmuhan at gmail.com>
To: Joel G. Rivera-González <el_pio at yahoo.com>
Sent: Friday, January 5, 2007 5:42:01 PM

Subject: Re: [rules-users] rules questions...

getResourceAsStream(ruleDrl) expects to find a drl file based on the location represented by "
ruleDrl".
 It should be noted that the location should be accessible from the CLASSPATH.  You could get a null pointer exception, if the location is not accessible from your CLASSPATH.

On 1/5/07, Joel G. Rivera-González <el_pio at yahoo.com> wrote:

Trying to figure out the new rule system...
but it doesnt work...

This is my rule:

package com.prtc.struts.rules

import com.prtc.db.MegaTransferObject
import java.util.ArrayList
import com.prtc.struts.Constants

rule "cancel_menu"

    when
        megaTO : MegaexistMegaTransferObject()

        megaTO(other_EffectiveOrderTypeDsl != null) and   
        megaTO(other_EffectiveOrderTypeDsl == Constants.NEW_OPEN_ORDER_TYPE

) and
        megaTO(orders_FkOrderStatusId != null) and   
        megaTO(orders_FkOrderStatusId == 
Constants.PENDING_TO_BE_SUBMITTED_ORDER_STATUS)

    then

        System.out.println("Hello");
end

part of my
 code:
        InputStreamReader ir = new InputStreamReader(RuleBuilderMgr.class.getClassLoader().getResourceAsStream(ruleDrl));  //the null pointer is from this line.      

        builder.addPackageFromDrl(ir);

this is the result:

7661 [main] DEBUG org.apache.commons.jci.compilers.JaninoJavaCompiler  - compiling com.prtc.struts.rules.Rule_cancel_menu_0

7942 [main] DEBUG org.apache.commons.jci.compilers.JaninoJavaCompiler  - compile com.prtc.struts.rules.Rule_cancel_menu_0
8062 [main] DEBUG
 org.apache.commons.jci.compilers.JaninoJavaCompiler  - compiled com.prtc.struts.rules.Rule_cancel_menu_0
8062 [main] DEBUG org.apache.commons.jci.compilers.JaninoJavaCompiler

  - compiling com.prtc.struts.rules.Rule_cancel_menu_0ConsequenceInvoker
8072 [main] DEBUG org.apache.commons.jci.compilers.JaninoJavaCompiler  - compile 
com.prtc.struts.rules.Rule_cancel_menu_0ConsequenceInvoker
8092 [main] DEBUG org.apache.commons.jci.compilers.JaninoJavaCompiler  - compiled com.prtc.struts.rules.Rule_cancel_menu_0ConsequenceInvoker

8102 [main] FATAL com.prtc.struts.util.ConstructServiceAssuranceTreeMenu  - Exception in
 ShowIspServiceAssuranceAction.execute --> java.lang.NullPointerException
8102 [main] FATAL com.prtc.struts.util.ConstructServiceAssuranceTreeMenu

  - java.lang.NullPointerException
    at com.prtc.struts.util.ConstructServiceAssuranceTreeMenu.construct(ConstructServiceAssuranceTreeMenu.java:74)

    at com.prtc.lc.rules.managers.RuleTester.test1(RuleTester.java:299)
    at 
com.prtc.lc.rules.managers.RuleTester.main(RuleTester.java:54)

Joel G. Rivera-Gonzalez
PRT

"The first 90% of a project takes 90% of the time, the last 10% takes the other 90% of the time" - Murphy's
 Law

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