[rules-users] NullPointerException during removing knowledge packages

[Edson Tirelli]

   I fixed a couple problems with rule removal in trunk. Can you check if
trunk works for you?

   Edson

2010/4/21 Piotr Jedrychowski <pjedrychowski at proximetry.pl>

> Hello.
>
> I have a problem with removing knowledge packages. During running this
> source code
> Collection<KnowledgePackage> knowledgePackages =
> knowledgeBase.getKnowledgePackages();
> if (knowledgePackages != null) {
>     List<String> packageNames = new ArrayList<String>();
>     for (KnowledgePackage singlePackage : knowledgePackages) {
>         packageNames.add(singlePackage.getName());
>     }
>
>     for (String singlePackageName : packageNames) {
>         knowledgeBase.removeKnowledgePackage(singlePackageName);
>     }
> }
>
> I'm getting NullPointerException with this StackTrace:
> java.lang.NullPointerException
>  at org.drools.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java:235)
>  at org.drools.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java:366)
>  at
> org.drools.common.AbstractRuleBase.removeRule(AbstractRuleBase.java:712)
>  at
> org.drools.common.AbstractRuleBase.removePackage(AbstractRuleBase.java:640)
>  at
>
> org.drools.impl.KnowledgeBaseImpl.removeKnowledgePackage(KnowledgeBaseImpl.java:166)
>
> I found this links in Internet:
> http://seamframework.org/Community/DroolsGuvnorCacheIssue
> http://lists.jboss.org/pipermail/rules-users/2007-November/003917.html
>
> Maybe someone had similar problem and could help me?
>
> I'm using:
> * JBoss 4.2.3.GA
> * Drools 5.0
>
> Regards,
> Piotr
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>



-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss by Red Hat @ www.jboss.com
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