Re: [rules-users] NullPointerException during removing knowledge packages

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(a)proximetry.pl <mailto:pjedrychowski@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 <http://4.2.3.GA> * Drools 5.0 Regards, Piotr _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org <mailto:rules-users@lists.jboss.org> https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli JBoss Drools Core Development JBoss by Red Hat @ www.jboss.com <http://www.jboss.com> _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users