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

[Yuri de Wit (JIRA)]

MVEL direct property accessors being converted to a ReturnValueConstraint
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                 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: Mark Proctor


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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