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

[Steven Williams]

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
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
> >
>
>
> --
> Give me a lever long enough... Single-handed, I shall move the world!
>
>
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
>


-- 
Steven Williams

Supervising Consultant

Object Consulting
Office: 8615 4500 Mob: 0439 898 668 Fax: 8615 4501
stevenw at objectconsulting.com.au
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