[rules-users] NullPointerException with float field

[techy]

I have rule that logical comparison with two Float fields(like price <
bidPrice || price >= bidPrice ). I get following exception if one of field
is null. Is this expected behaviour? Please clarify. Thanks


Caused by: java.lang.NullPointerException
	at
org.drools.base.extractors.BaseObjectClassFieldExtractor.getFloatValue(BaseObjectClassFieldExtractor.java:84)
	at
org.drools.base.ClassFieldExtractor.getFloatValue(ClassFieldExtractor.java:191)
	at
org.drools.base.evaluators.FloatFactory$FloatLessEvaluator.evaluate(FloatFactory.java:250)
	at
org.drools.rule.VariableRestriction.isAllowed(VariableRestriction.java:73)
	at org.drools.rule.VariableConstraint.isAllowed(VariableConstraint.java:67)
	at org.drools.rule.AndConstraint.isAllowed(AndConstraint.java:47)
	at org.drools.rule.OrConstraint.isAllowed(OrConstraint.java:50)
	at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:137)
	at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:22)
	at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:145)
	at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:318)
	at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:145)
	at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:22)
	at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:145)
	at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:318)
	at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:162)
	at org.drools.reteoo.Rete.assertObject(Rete.java:175)
	at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:192)
	at
org.drools.reteoo.ReteooWorkingMemory.doInsert(ReteooWorkingMemory.java:71)
	at
org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1287)
	at
org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:103)
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