7:49 p.m.
HI.
I am getting following exception.
Exception in thread "main" org.drools.RuntimeDroolsException:
d1.rule.Rule_8f09c0aa350100000080cb1e0dd40f6fEval4Invoker@f6f66af4 :*
java.lang.ClassCastException: d1.rule.facts.Medication cannot be cast to
d1.rule.facts.Procedure*
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.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:72)
at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:161)
at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:458)
at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:386)
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:134)
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.common.NamedEntryPoint.insert(NamedEntryPoint.java:330)
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 d1.rule.facts.PatientFacts.loadFactsInSession(PatientFacts.java:6075)
at d1.rule.DREvaluator.startEvaluation(DREvaluator.java:278)
at d1.rule.DREvaluator.main(DREvaluator.java:72)
Caused by: java.lang.ClassCastException: d1.rule.facts.Medication cannot be
cast to d1.rule.facts.Procedure
at
d1.rule.Rule_8f09c0aa350100000080cb1e0dd40f6fEval4Invoker.evaluate(Unknown
Source)
at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:114)
Following is the rule. I found that due to "or" the Procedure block not
runs.
If I change "or" to "and" than procedure block executed & the
error not
produced.
I am not sure what's the problem, I am using Drool 5.3
rule "8f09c0aa350100000080cb1e0dd40f6f"
when #conditions
(
$cepFacts: CEPFacts(id=="D1")
and
eval($cepFacts.initialize())
and
(
(
$DxDate_1 : ( Medication( name equalsIgnoreCase "Ofloxacin" ) )
and
eval($cepFacts.checkRelativeValues($DxDate_1) )
)
or
(
$DxDate_2 : ( Procedure( name equalsIgnoreCase "Pres antibiotic" )
)
and
eval($cepFacts.checkRelativeValues($DxDate_2) )
)
)
and
(
$DxDate_3 : ( Medication( name equalsIgnoreCase "Trazodone" ) )
and
eval($cepFacts.checkTimeIs($DxDate_3)
)
)
then
resultIds.add("8f09c0aa350100000080cb1e0dd40f6f");
end
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1:12 a.m.
This is a bug in the DRL parser/builder. Even when you (as you should)
omit the parentheses around the patterns "Medication" and "Procedure"
(see below) you get the same exception:
( $Dx1 : Medication( name == "Oflo" )
and
eval($x.check($Dx1) )
)
or
( $Dx2 : Procedure( name == "Pre" )
and
eval($x.checks($Dx2) )
)
However, you can use a workaround with the semantically equivalent inline eval:
( $Dx1 : Medication( name == "Oflo", eval($x.check($Dx1) )
or
$Dx2 : Procedure( name == "Pre", eval($x.checks($Dx2) ) )
Note: The similarity between treatment by Medication and Procedure
suggests that there should be an interface Treatment implemented by
both, so you might simplify this to
$Dx1: Treatment( name == "Oflo" || == "Pre", eval( $x.checks(
$Dx1 ) )
-W
On 29/02/2012, kashif10 <kash452(a)yahoo.com> wrote:
HI.
I am getting following exception.
Exception in thread "main" org.drools.RuntimeDroolsException:
d1.rule.Rule_8f09c0aa350100000080cb1e0dd40f6fEval4Invoker@f6f66af4 :*
java.lang.ClassCastException: d1.rule.facts.Medication cannot be cast to
d1.rule.facts.Procedure*
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.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:72)
at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:161)
at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:458)
at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:386)
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:134)
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.common.NamedEntryPoint.insert(NamedEntryPoint.java:330)
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 d1.rule.facts.PatientFacts.loadFactsInSession(PatientFacts.java:6075)
at d1.rule.DREvaluator.startEvaluation(DREvaluator.java:278)
at d1.rule.DREvaluator.main(DREvaluator.java:72)
Caused by: java.lang.ClassCastException: d1.rule.facts.Medication cannot be
cast to d1.rule.facts.Procedure
at
d1.rule.Rule_8f09c0aa350100000080cb1e0dd40f6fEval4Invoker.evaluate(Unknown
Source)
at org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:114)
Following is the rule. I found that due to "or" the Procedure block not
runs.
If I change "or" to "and" than procedure block executed & the
error not
produced.
I am not sure what's the problem, I am using Drool 5.3
rule "8f09c0aa350100000080cb1e0dd40f6f"
when #conditions
(
$cepFacts: CEPFacts(id=="D1")
and
eval($cepFacts.initialize())
and
(
(
$DxDate_1 : ( Medication( name equalsIgnoreCase "Ofloxacin" ) )
and
eval($cepFacts.checkRelativeValues($DxDate_1) )
)
or
(
$DxDate_2 : ( Procedure( name equalsIgnoreCase "Pres antibiotic" )
)
and
eval($cepFacts.checkRelativeValues($DxDate_2) )
)
)
and
(
$DxDate_3 : ( Medication( name equalsIgnoreCase "Trazodone" ) )
and
eval($cepFacts.checkTimeIs($DxDate_3)
)
)
then
resultIds.add("8f09c0aa350100000080cb1e0dd40f6f");
end
--
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8:21 a.m.
Thanks a lot Laune, for the suggestion,
I was adding eval condition using "and", as I thought that I can't add eval
condition using $Dx1 inside the $DX1 matching assignment. but your
suggestion working fine, by putting eval inside the $Dx1 assignment
matching.
As far as generalize Facts bean is concerned, yes we do have a proper OOD
design of our facts bean.
But there are some fields which may differ b/w different facts beans, such
as we have formulation in medication, but procure don't have formulation
field.
Secondly we want to match only specialize facts with rule... I mean we don't
want to match Medication fact having same name as Procedure required in
Rule.
One more question, is it work with Drool 5.1 too?
I already went through Drool Documents found on the official site, but is
there any resource to learn more about the syntax?
Thanks.
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9:47 a.m.
On 29 February 2012 15:21, kashif10 <kash452(a)yahoo.com> wrote:
One more question, is it work with Drool 5.1 too?
Inline eval() works with 5.1 and later.
I already went through Drool Documents found on the official site,
but is
there any resource to learn more about the syntax?
You can learn a lot from the examples that come with Drools. They have been
consolidated and extended for 5.2.0.
-W
Thanks.
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12:57 p.m.
Thanks,
Yes I tried & it's working fine on our server running Drool. 5.1.
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4653
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4654
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4 comments
2 participants
participants (2)
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kashif10 -
Wolfgang Laun