i just use this sort of rule rule "Hello World"
dialect "mvel"
when
m : Message( $message1 : message )
mdup : Message($message2:message==$message1,eval(this!=m) )
then
System.out.println("Rule Fired1111"+m +"::"+mdup );
System.out.println("Rule Fired"+$message1 +"::"+$message2 );
end
if i put rule parameter dialect "MVEL" the error "this should be used in
static context" is gone. But now the rule is firing whatever may be the data
i assert 2 objects with message Hello and Hello11111.
still the rule is firing(2 times).
Thanks and regs,
basha
Message: 1
Date: Wed, 14 Nov 2007 09:48:02 -0200
From: "Edson Tirelli" <[EMAIL PROTECTED]>
Subject: Re: [rules-users] RE: how to find duplicate inlineeval
To: "Rules Users List" <[email protected]>
Message-ID:
<[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"
Sorry, you lost me. What is the error message?
Can you send us a self contained test showing the problem you are having?
[]s
Edson
2007/11/14, Sikkandar Nawabjan <[EMAIL PROTECTED]>:
>
> Edson,
>
> As you said i used inline eval. But am getting erroe message like this
> can't be used in static context.am using statelesssession to assert my
> objects.
>
> i also put eval(this!=obj1) as follows.
>
> $obj1:Object1($id:id,$name:name)
> $obj2:Object1(id==$id,$name:name==$name, eval( this!=$obj1
> )) eval($obj2!= $obj1)
>
> Though my references are different the rule is not firing
>
>
> Thanks and Regs
>
> Basha
>
> From: [EMAIL PROTECTED] on behalf of Edson Tirelli
> Sent: Tue 11/13/2007 9:35 PM
> To: Rules Users List
> Subject: Re: [rules-users] RE: how to find duplicate
>
>
>
>
> Sikkandar,
>
> The only way to check for identity is to use an inline eval and use
> java code to check that:
>
> when
> $obj1:Object1($id:id,$name:name)
> $obj2:Object1(id==$id,$name:name==$name, eval( this!=$obj1 ))
> then
>
> Another option is to configure your rulebase to not allow the same
> object to be matched by more than one pattern in your rules. To do that you
> can either set a system property:
>
> drools.removeIdentities = true
>
> Or you can use drools API:
>
> RuleBaseConfiguration conf = new RuleBaseConfiguration();
> conf.setRemoveIdentities( true );
> RuleBase rulebase = RuleBaseFactory.newRuleBase( conf );
>
> If you do that, your rule can be written as this:
>
> when
> $obj1:Object1($id:id,$name:name)
> $obj2:Object1(id==$id,$name:name==$name)
> then
>
> Since the engine will never allow the same fact to simultaneously match
> both patterns.
>
> []s
> Edson
<<winmail.dat>>
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