[jboss-jira] [JBoss JIRA] Closed: (JBRULES-1101) MVEL direct property accessors being converted to a ReturnValueConstraint

[Edson Tirelli (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-1101?page=all ]

Edson Tirelli closed JBRULES-1101.
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    Resolution: Done

> MVEL direct property accessors being converted to a ReturnValueConstraint
> -------------------------------------------------------------------------
>
>                 Key: JBRULES-1101
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-1101
>             Project: JBoss Rules
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Drl Parser/Builder
>    Affects Versions:  4.0.0.GA
>            Reporter: Yuri de Wit
>         Assigned To: Edson Tirelli
>             Fix For: 4.0.1
>
>
> After narrowing down a performance issue with my drools app, I reached to the dev team and quickly it became clear that for some reason drools was not indexing my field constraints. After some investigation and some help from Conan  it became clear that one of the problem was that MVEL direct property accessors were being translated into a ReturnValueConstraint (afaik, an eval), which cannot be indexed by default.
> So I changed my rules to make sure that i used aliaes for the first 3 constrraints instead of property accessors and I was able to see trememdous perf improvements for my usecases.

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