[jboss-jira] [JBoss JIRA] Created: (JBRULES-1588) collect fails when using treeset

[pchar (JIRA)]

collect fails when using treeset
--------------------------------

                 Key: JBRULES-1588
                 URL: http://jira.jboss.com/jira/browse/JBRULES-1588
             Project: JBoss Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 4.0.6
            Reporter: pchar
         Assigned To: Mark Proctor


Hi All,

i've a simple rules that retract objects form the WM

 rule "Retract From TreeSet"
	when
	$tree: TreeSet() from collect (Message()  )

	then
	System.out.println($tree.first());
	retract($tree.first());
end

after the firts run the following exception is thrown


org.drools.FactException: Retract error: handle not found for object: [Hello World]. Is it in the working memory?
[Hello World]
	at org.drools.base.DefaultKnowledgeHelper.retract(DefaultKnowledgeHelper.java:120)
	at com.sample.Rule_Retract_From_TreeSet_0.consequence(Rule_Retract_From_TreeSet_0.java:9)
	at com.sample.Rule_Retract_From_TreeSet_0ConsequenceInvoker.evaluate(Rule_Retract_From_TreeSet_0ConsequenceInvoker.java:22)
	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:550)
	at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:514)
	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:471)
	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:433)
	at com.sample.DroolsTest.main(DroolsTest.java:36)
org.drools.spi.ConsequenceException: org.drools.FactException: Retract error: handle not found for object: [Hello World]. Is it in the working memory?
	at org.drools.base.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:14)
	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:554)
	at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:514)
	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:471)
	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:433)
	at com.sample.DroolsTest.main(DroolsTest.java:36)
Caused by: org.drools.FactException: Retract error: handle not found for object: [Hello World]. Is it in the working memory?
	at org.drools.base.DefaultKnowledgeHelper.retract(DefaultKnowledgeHelper.java:120)
	at com.sample.Rule_Retract_From_TreeSet_0.consequence(Rule_Retract_From_TreeSet_0.java:9)
	at com.sample.Rule_Retract_From_TreeSet_0ConsequenceInvoker.evaluate(Rule_Retract_From_TreeSet_0ConsequenceInvoker.java:22)
	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:550)
	... 4 more



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