[jboss-jira] [JBoss JIRA] (DROOLS-1669) NullPointerException in FlatQueryResults.<init> ("left join" query)

[Tibor Zimányi (JIRA)]

    [ https://issues.jboss.org/browse/DROOLS-1669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13635786#comment-13635786 ] 

Tibor Zimányi commented on DROOLS-1669:
---------------------------------------

Poker: 2

> NullPointerException in FlatQueryResults.<init> ("left join" query)
> -------------------------------------------------------------------
>
>                 Key: DROOLS-1669
>                 URL: https://issues.jboss.org/browse/DROOLS-1669
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine, kie server
>    Affects Versions: 6.5.0.Final
>         Environment: Win7 x64, Tomcat 9, workbench-built DRL, managed KIE Server execution
>            Reporter: Russell Morrisey
>            Assignee: Mario Fusco
>
> The following DRL query passes build and validation in the workbench, but fails at runtime in KIE Server:
> {code:java}
> query "questionsKnowledge" ()
>     $question: Question()
>     $visible: QuestionVisible(question == $question) or not QuestionVisible(question == $question)
> end
> {code}
> The intent is that $visible may or may not be bound, depending on whether QuestionVisible is present. It looks like this causes an error in FlatQueryResults.(init):
> {code:java}
> 15:59:30.897 ERROR o.k.s.s.d.DroolsKieContainerCommandServiceImpl - Error calling container 'qna2'
> java.lang.NullPointerException: null
>         at org.drools.core.QueryResultsRowImpl.getFactHandle(QueryResultsRowImpl.java:99) ~[drools-core-6.5.0.Final.jar:6.5.0.Final]
>         at org.drools.core.QueryResultsRowImpl.getFactHandle(QueryResultsRowImpl.java:95) ~[drools-core-6.5.0.Final.jar:6.5.0.Final]
>         at org.drools.core.runtime.rule.impl.FlatQueryResults.<init>(FlatQueryResults.java:116) ~[drools-core-6.5.0.Final.jar:6.5.0.Final]
>         at org.drools.core.command.runtime.rule.QueryCommand.execute(QueryCommand.java:109) ~[drools-core-6.5.0.Final.jar:6.5.0.Final]
>         at org.drools.core.command.runtime.rule.QueryCommand.execute(QueryCommand.java:39) ~[drools-core-6.5.0.Final.jar:6.5.0.Final]
>         at org.drools.core.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:137) ~[drools-core-6.5.0.Final.jar:6.5.0.Final]
>         at org.drools.core.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:51) ~[drools-core-6.5.0.Final.jar:6.5.0.Final]
>         at org.drools.core.impl.StatelessKnowledgeSessionImpl.execute(StatelessKnowledgeSessionImpl.java:254) ~[drools-core-6.5.0.Final.jar:6.5.0.Final]
>         at org.kie.server.services.drools.RulesExecutionService.call(RulesExecutionService.java:52) ~[kie-server-services-drools-6.5.0.Final.jar:6.5.0.Final]
>         at org.kie.server.services.drools.DroolsKieContainerCommandServiceImpl.callContainer(DroolsKieContainerCommandServiceImpl.java:69) ~[kie-server-services-drools-6.5.0.Final.jar:6.5.0.Final
> ]
>         at org.kie.server.remote.rest.drools.CommandResource.manageContainer(CommandResource.java:72) [kie-server-rest-drools-6.5.0.Final.jar:6.5.0.Final]
> {code}



--
This message was sent by Atlassian JIRA
(v7.5.0#75005)