[rules-users] semantically equivalent DROOLS L-value expressions?

[Mark Proctor]

single equal sign, must be double:
> attrA = "foo"



On 22 Oct 2012, at 20:44, Cotton.Ben <ben.d.cotton.iii at gmail.com> wrote:

> Hi, I am a DROOLS newbie. I apologize if this has been asked before. This rule (R1) is not syntactically correct in the Eclipse .DRL view.
> 
> rule "R1" 
>     when  
>         Message( 
>              ((attrA = "foo" && _attrB == "bar") || AttrA== "foo")  //syntax error (curious, why?)
>         )
>     then 
>         System.out.println( "R1 pattern-matched Message.  DROOLS Consequence executing now." );    
> end
> 
> but R2 is syntactically correct =
> 
> rule "R2" 
>     when  
>         Message( attrA = "foo" && _attrB == "bar") || 
>         Message (AttrA== "foo")
> 
>     then 
>         System.out.println( "R2 pattern-matched Message.  DROOLS Consequence executing now." );    
> end
> 
> In Drools 5.2, are R1 and R2 semantically equivalent? 
> View this message in context: semantically equivalent DROOLS L-value expressions?
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20121023/c208ce96/attachment.html