[jboss-jira] [JBoss JIRA] (JBRULES-3641) UnknownDescriptionException: Descr ( class org.drools.lang.descr.MVELExprDescr ) is unknown to drools verifier.

[nick bauman (JIRA)]

nick bauman created JBRULES-3641:
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             Summary: UnknownDescriptionException: Descr ( class org.drools.lang.descr.MVELExprDescr ) is unknown to drools verifier.
                 Key: JBRULES-3641
                 URL: https://issues.jboss.org/browse/JBRULES-3641
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: drools-verifier
    Affects Versions: 5.4.0.Final
         Environment: OSX 10.7.4 Apple Java 1.6.0_35
            Reporter: nick bauman
            Assignee: Mark Proctor


When the verifier encounters a rule such as:

rule "Contrived Example"
    when
        $pitem : PresentedItem(sequenceNumber > 0)
        $receipt : Receipt(items contains $pitem.id)
        $item : ReceiptItem(plan == foo.Plan.NULL_PLAN) from $receipt.items
    then
        log.info("Contrived Example ran");
end

It prints this exception to standard error and swallows the exception (as seen in VerifierImpl.java line 93):

org.drools.verifier.visitor.UnknownDescriptionException: Descr ( class org.drools.lang.descr.MVELExprDescr ) is unknown to drools verifier.
	at org.drools.verifier.visitor.DeclarativeInvokerDescrVisitor.visit(DeclarativeInvokerDescrVisitor.java:58)
	at org.drools.verifier.visitor.PatternDescrVisitor.visit(PatternDescrVisitor.java:297)
...

It seems to be choking on the token $receipt.items in the rule. Not sure if this is a bug or an accidental bit of debug code using stack traces that snuck into a release. I'd like to know which, at least. Thank you.

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