[jboss-jira] [JBoss JIRA] (DROOLS-180) NPE when trying to add the same resource twice

[Mario Fusco (JIRA)]

     [ https://issues.jboss.org/browse/DROOLS-180?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco resolved DROOLS-180.
--------------------------------

    Fix Version/s: 6.0.0.CR1
       Resolution: Done

    
> NPE when trying to add the same resource twice
> ----------------------------------------------
>
>                 Key: DROOLS-180
>                 URL: https://issues.jboss.org/browse/DROOLS-180
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>            Reporter: Mario Fusco
>            Assignee: Mario Fusco
>             Fix For: 6.0.0.CR1
>
>
> Trying to add the same resource twice to the KnowledgeBuilder like in
> {code} 
>         String str =
>                 "rule R when\n" +
>                 "  $s : String()\n" +
>                 "then\n" +
>                 "end\n";
>         KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
>         kbuilder.add( ResourceFactory.newByteArrayResource( str.getBytes() ), ResourceType.DRL );
>         kbuilder.add( ResourceFactory.newByteArrayResource( str.getBytes() ), ResourceType.DRL );
> {code}
> generates the following NullPointerException:
> {code}
> java.lang.NullPointerException
> 	at org.drools.compiler.compiler.PackageBuilder.validateUniqueRuleNames(PackageBuilder.java:1351)
> 	at org.drools.compiler.compiler.PackageBuilder.initPackageRegistry(PackageBuilder.java:947)
> 	at org.drools.compiler.compiler.PackageBuilder.addPackage(PackageBuilder.java:899)
> 	at org.drools.compiler.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:484)
> 	at org.drools.compiler.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:688)
> 	at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:51)
> 	at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:40)
> {code}

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