[jboss-jira] [JBoss JIRA] (DROOLS-1451) NPE when building KieBase with OOPath in a declared window

[Marek Winkler (JIRA)]

Marek Winkler created DROOLS-1451:
-------------------------------------

             Summary: NPE when building KieBase with OOPath in a declared window
                 Key: DROOLS-1451
                 URL: https://issues.jboss.org/browse/DROOLS-1451
             Project: Drools
          Issue Type: Bug
          Components: core engine
    Affects Versions: 7.0.0.Beta6
         Environment: Reproducible with 7.0.0-SNAPSHOT.
            Reporter: Marek Winkler
            Assignee: Mario Fusco


When using an OOPath expression in a declared window (does not matter if a length or a time window), a NPE is thrown. For instance, a rule such as:

{code}
declare window Pings
  MessageEvent( /msg{ message == 'Ping' } ) over window:length( 2 )
end

rule R when
  $messageEvent: MessageEvent() from window Pings
then
  events.add( $messageEvent );
end
{code}

produces the following exception (see the attachment for the full stacktrace) when building the KieBase:
{code}
java.lang.NullPointerException
	at org.drools.core.reteoo.builder.WindowReferenceBuilder.build(WindowReferenceBuilder.java:40)
	at org.drools.core.reteoo.builder.PatternBuilder.attachPattern(PatternBuilder.java:116)
	at org.drools.core.reteoo.builder.PatternBuilder.build(PatternBuilder.java:77)
	at org.drools.core.reteoo.builder.GroupElementBuilder$AndBuilder.build(GroupElementBuilder.java:108)
	at org.drools.core.reteoo.builder.GroupElementBuilder.build(GroupElementBuilder.java:68)
	at org.drools.core.reteoo.builder.ReteooRuleBuilder.addSubRule(ReteooRuleBuilder.java:164)
	at org.drools.core.reteoo.builder.ReteooRuleBuilder.addRule(ReteooRuleBuilder.java:136)
	at org.drools.core.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:110)
...
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.createKieBase(KieContainerImpl.java:630)
...
{code}



--
This message was sent by Atlassian JIRA
(v7.2.3#72005)