[jboss-jira] [JBoss JIRA] Created: (JBRULES-1003) NullPointerException being thrown while removing a package from RuleBase

[Sarika Khamitkar (JIRA)]

NullPointerException being thrown while removing a package from RuleBase
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                 Key: JBRULES-1003
                 URL: http://jira.jboss.com/jira/browse/JBRULES-1003
             Project: JBoss Rules
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: Reteoo
    Affects Versions:  4.0.0.MR3
         Environment: Windows XP
            Reporter: Sarika Khamitkar
         Assigned To: Mark Proctor


I get the following exception while removing a rule package from the RuleBase.
java.lang.NullPointerException
            at org.drools.reteoo.CompositeObjectSinkAdapter.removeObjectSink(CompositeObjectSinkAdapter.java:125)
            at org.drools.reteoo.ObjectSource.removeObjectSink(ObjectSource.java:123)
            at org.drools.reteoo.ObjectTypeNode.removeObjectSink(ObjectTypeNode.java:297)
            at org.drools.reteoo.ObjectTypeNode.remove(ObjectTypeNode.java:232)
            at org.drools.reteoo.AlphaNode.remove(AlphaNode.java:187)
            at org.drools.reteoo.AlphaNode.remove(AlphaNode.java:187)
            at org.drools.reteoo.BetaNode.remove(BetaNode.java:185)
            at org.drools.reteoo.BetaNode.remove(BetaNode.java:187)
            at org.drools.reteoo.RuleTerminalNode.remove(RuleTerminalNode.java:439)
            at org.drools.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java:135)
            at org.drools.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java:259)
            at org.drools.common.AbstractRuleBase.removePackage(AbstractRuleBase.java:408)
....
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A sample of the drl files:

package rule2392016206

import com.servlets.Record;
import com.servlets.Field;
import com.servlets.rules.RulesTrigger;

rule "Property damage"
when
rulesTrigger: RulesTrigger(clientID == 123, triggerType == 2)
record: Record(coreTypeIDList contains "123")
(Field (ID == 123, dateValue >= "04-Jul-2000") and Field (ID == 456, fieldValue > 10) ) 
then
rulesTrigger.sendEmail(2392016206L, record);
end
--------------------------
The NullPointerException occurs when I execute the following code.
ruleBase.removePackage("rule2392016206");


Before removing the package, I am iterating through all the packages in the ruleBase and I can see this package name in the list. One more thing I noticed was that if the number of packages in the ruleBase is lesss than 4, then the exception is not thrown.






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