Re: [rules-users] RE: Is the future avail in 4.0
Sikkandar Nawabjan wrote:
Hi,
I have couple of questions
1) I want to validate a Object and based upon certain condition set the flag and that flag available in my working memory context so that all the rules will execute based on the value of this flag. Is there any way to set the Global variable in working memory environment and use it in predicate logic.
I beleive passing Global variable using setGLobal() is possible but we can't
use it in predicate logic.
globals can be used in evals, however they should be considered
immutable if you do that and should be set before you assert any working
memory data.
2) my second quetion is i have 2 classes say
Public class B extends Class A{
private boolean flag;
}
am validating my rule using of type B.
But i want to assert object of class A. in normal java we do downcasting B b
= (B)obj;
if i don't do that will downcast will happen at the working memory side
automatically??
If you assert A and there is a pattern on B, A will be matched against it.
Basha
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Re: [rules-users] RE: Is the future avail in 4.0
(1) Theres nothing stopping you using a singleton to hold state, so this
provides what you want:-
rule 1
when
$o : AnObject( someField == someCriteria )
then
boolean someFlag = true;
insert(new State( someFlag ) );
end
rule 2
when
State (someFlag == true )
$o : AnotherObject ( )
then
//something else
end
You could also have the first check activate another AgendaGroup, for
example:-
rule 1
when
$o : AnObject( someField == someCriteria )
then
drools.setFocus(SomeOtherGroup);
end
rule 2
agenda-group SomeOtherGroup
when
$o : AnotherObject ( )
then
//something else
end
(2) I believe the ObjectTypeNode filters based on Class.isInstance() and
therefore you should be able to code rules based upon the sub-class and
insert super-classes.
With kind regards,
Mike
On 06/10/2007, Sikkandar Nawabjan [EMAIL PROTECTED] wrote:
Hi,
I have couple of questions
1) I want to validate a Object and based upon certain condition set the
flag and that flag available in my working memory context so that all the
rules will execute based on the value of this flag. Is there any way to set
the Global variable in working memory environment and use it in predicate
logic.
I beleive passing Global variable using setGLobal() is possible but we
can't use it in predicate logic.
2) my second quetion is i have 2 classes say
Public class B extends Class A{
private boolean flag;
}
am validating my rule using of type B.
But i want to assert object of class A. in normal java we do
downcasting B b = (B)obj;
if i don't do that will downcast will happen at the working memory side
automatically??
Basha
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Re: [rules-users] DRL doubts
Oh yes I have, but I'd like to see something different. There are no examples with brl files (well, I didn't find any). :) On 10/5/07, Anstis, Michael (M.) [EMAIL PROTECTED] wrote: Have you downloaded the examples? -- *From:* [EMAIL PROTECTED] [mailto: [EMAIL PROTECTED] *On Behalf Of *Thiago H. Pojda *Sent:* 05 October 2007 02:28 *To:* rules-users@lists.jboss.org *Subject:* [rules-users] DRL doubts Hello, I'm building a rule structure (drl) from scratch. My first idea was to make a drl with it's corresponding dsl like: Geral.drl - Geral.dsl. But I saw some other kind of structures, like brl files and now I'm not sure what to use. If you guys could send me some some examples of working structures it would be great. I'm trying to make something organized, and looking at rules from more experienced people would help a lot. I'd like to have a general idea of things so I can make a better choice. Any help would be appreciated. Thank you, -- Thiago Henrique Pojda Curitiba - PR - Brasil +55 41 99239019 ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Thiago Henrique Pojda Curitiba - PR - Brasil +55 41 99239019 ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Red Hat Developer Studio (Beta 1) and Drools Plugin - Error creating the Agenda view.
Folks, I'm Using RHDS Beta 1 - clean install and the only plugin is Drools-Eclipse (snapshot of Thurs 3rd Oct). OS is Vista, using Java 1.6.0_02 . When I switch to Drools Perspective and try to open the Agenda View I get the following error : Error creating the view. org/eclipse/debug/internal/ui/contexts/provisional/IDebugContextListener Global Data View , Working Memory View also have the same error. Strangely , Audit View works ok. Any suggestions? Paul ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Red Hat Developer Studio (Beta 1) and Drools Plugin - Error creating the Agenda view.
Paul, Correct me if I'm wrong, but I think RHDS is on top of Eclipse Europe (3.3), and the current version of the Drools plugin is still targeted to Eclipse 3.2. Most of it will work, but debug is one of the areas where there have been some changes in the internal eclipse APIs. We'll be upgrading to Eclipse 3.3 after Drools 4.0.2 has been released (any day now), so once that's done, builds will be available for Eclipse 3.3 as well. Kris - Original Message - From: Paul Browne [EMAIL PROTECTED] To: Rules Users List rules-users@lists.jboss.org Sent: Saturday, October 06, 2007 11:40 PM Subject: [rules-users] Red Hat Developer Studio (Beta 1) and Drools Plugin - Error creating the Agenda view. Folks, I'm Using RHDS Beta 1 - clean install and the only plugin is Drools-Eclipse (snapshot of Thurs 3rd Oct). OS is Vista, using Java 1.6.0_02 . When I switch to Drools Perspective and try to open the Agenda View I get the following error : Error creating the view. org/eclipse/debug/internal/ui/contexts/provisional/IDebugContextListener Global Data View , Working Memory View also have the same error. Strangely , Audit View works ok. Any suggestions? Paul ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] BRMS - how to use variables on Action part?
On the RHS, if you put = it will allow you to type in that calculation. I guess that is not as intuitive as it shoudl be (on the LHS it makes you tell it what you want to do), I am open to considering changing that so it is more obvious. Yes, you can only access setters this way (at the moment). Everything is based around fields and facts, (not so much objects). The balancing act is to not put too much power into the GUI (as if you want more, that is what DRL is for). On 10/4/07, Felipe Piccolini [EMAIL PROTECTED] wrote: Ok, so to fit on the not ignored emails from the list Mark posted, I changed the title. However I following in the list anyways beacuse Im resending this email in less than 3 days. Note: Im not desperate, nor this is for today. This just came out today yesterday and well... its important to me, but I think I can get a work around for now. So here is the real on-topic question. - Anyone knows how to use variables (from fields) setted on LHS, to modify a field on the RHS using the GUI editor from BRMS? What I need is to write this rule on BRMS. rule Set approvedMount for a women no-loop true when $p: Person($sex: sex == F, $income: incomeMount) then $p.setApprovedMount($income * 1.2); update($p); end I know I can use formulas, but I only know how to set those on LHS, I dont know how to put a formula on RHS (setter of the field to modify). Thanks. *Felipe Piccolini M.* [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
