By your description, they look like problems, so please open a ticket
for them.
Edson
2011/12/28 Miles Wen <miles.wy.1(a)gmail.com>
Hi all,
I'm using drools 5.3.0.Final.And I think I found two possibly bugs:
1): drl compilation failed when encountering multiple continuous '!'
(a.k.a 'not' operator)s.for example:
rule "out"
when
Msg(!!!false)
then
end
the code above won't compile, but 'Msg(!false)' compiles correctly. I
remember there's no such problems when using drools 5.0, this caused some
incompatibility issues in our system...
2): Weird exception thrown: java.lang.ClassCastException:
org.drools.reteoo.InitialFactImpl cannot be cast to XXX..., for example:
rule "test"
when
l1:Msg(str == 'test') and
l2:Msg(!bool) or
eval(!false)
then
end
this code above throws exception at runtime:
org.drools.RuntimeDroolsException: Unexpected exception executing action
org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteAssertAction@743fbbfc
at
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:977)
at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:315)
at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:291)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:886)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:845)
at
org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:255)
at com.sample.DroolsTest.main(DroolsTest.java:56)
Caused by: org.drools.RuntimeDroolsException:
com.sample.Rule_testEval0Invoker@3e1b05a2 : java.lang.ClassCastException:
org.drools.reteoo.InitialFactImpl cannot be cast to com.sample.Msg
at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:119)
at
org.drools.reteoo.EvalConditionNode.assertLeftTuple(EvalConditionNode.java:178)
at
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:197)
at
org.drools.reteoo.SingleLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:146)
at
org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:158)
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)
at
org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:215)
at
org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:244)
at org.drools.reteoo.Rete.assertObject(Rete.java:107)
at
org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:284)
at
org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteAssertAction.execute(ReteooWorkingMemory.java:404)
at
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:975)
... 6 more
Caused by: java.lang.ClassCastException: org.drools.reteoo.InitialFactImpl
cannot be cast to com.sample.Msg
at com.sample.Rule_testEval0Invoker.evaluate(Unknown Source)
at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:114)
... 17 more
Is there any workaround for those problems? especially the 2nd one...
Any help would be appreciated,
Thanks!
--
Regards.
Miles. Wen
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--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @
www.jboss.com