[rules-dev] A possible 'or ' bug

Stjepan Cvitanovic stjepan.cvitanovic at gmail.com
Thu Dec 6 07:22:27 EST 2007


Hello
I'd like to report a (possible) bug,
I've tried to run this on the latest version of drools (4.0.3) but I get an
error:
applyOrTransformation could not find transformation for parent 'OR' and
child 'OR'
java.lang.RuntimeException: applyOrTransformation could not find
transformation for parent 'OR' and child 'OR'
    at org.drools.rule.LogicTransformer.applyOrTransformation(
LogicTransformer.java:148)
    at org.drools.rule.LogicTransformer.processTree(LogicTransformer.java
:140)
    at org.drools.rule.LogicTransformer.transform(LogicTransformer.java:76)
    at org.drools.rule.Rule.getTransformedLhs(Rule.java:419)
    at org.drools.reteoo.builder.ReteooRuleBuilder.addRule(
ReteooRuleBuilder.java:102)
    at org.drools.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:116)
    at org.drools.reteoo.ReteooRuleBase.addRule(ReteooRuleBase.java:268)
    at org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java
:337)
    at hr.combis.rule.editor.tester.RuleTesterFDAImpl.createRuleBase(
RuleTesterFDAImpl.java:210)
    at hr.combis.rule.editor.tester.RuleTesterFDAImpl.init(
RuleTesterFDAImpl.java:159)
    at hr.combis.rule.editor.testing.TestingExecutor.run(
TestingExecutor.java:129)
    at java.lang.Thread.run(Thread.java:595)
this is what the rule looks like:

wine : Wine(color == "red")
or
(
    cheese : Cheese(smelly == "yes")
    *and*
        (
            person : Person(height == 12, fovouriteCheese == cheese)
            *or*
            person : Person(height == 13, fovouriteCheese == cheese)
        )
)

the rule looks perfectly sensical to me. If I change it to this (which, btw.
looks non-sensical)
wine : Wine(color == "red")
or
(
    cheese : Cheese(smelly == "yes")
    *or*
        (
            person : Person(height == 12, fovouriteCheese == cheese)
            *and*
            person : Person(height == 13, fovouriteCheese == cheese)
        )
)


I'm not saying the second one shouldn't work(I fail to make the sense of it
however), but it looks to me, the first one should.
Am I wrong, or is this really a bug?
-- 
lp
------
Stjepan
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