<br> I fixed a couple problems with rule removal in trunk. Can you check if trunk works for you?<br><br> Edson<br><br><div class="gmail_quote">2010/4/21 Piotr Jedrychowski <span dir="ltr"><<a href="mailto:pjedrychowski@proximetry.pl">pjedrychowski@proximetry.pl</a>></span><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hello.<br>
<br>
I have a problem with removing knowledge packages. During running this<br>
source code<br>
Collection<KnowledgePackage> knowledgePackages =<br>
knowledgeBase.getKnowledgePackages();<br>
if (knowledgePackages != null) {<br>
List<String> packageNames = new ArrayList<String>();<br>
for (KnowledgePackage singlePackage : knowledgePackages) {<br>
packageNames.add(singlePackage.getName());<br>
}<br>
<br>
for (String singlePackageName : packageNames) {<br>
knowledgeBase.removeKnowledgePackage(singlePackageName);<br>
}<br>
}<br>
<br>
I'm getting NullPointerException with this StackTrace:<br>
java.lang.NullPointerException<br>
at org.drools.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java:235)<br>
at org.drools.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java:366)<br>
at<br>
org.drools.common.AbstractRuleBase.removeRule(AbstractRuleBase.java:712)<br>
at<br>
org.drools.common.AbstractRuleBase.removePackage(AbstractRuleBase.java:640)<br>
at<br>
org.drools.impl.KnowledgeBaseImpl.removeKnowledgePackage(KnowledgeBaseImpl.java:166)<br>
<br>
I found this links in Internet:<br>
<a href="http://seamframework.org/Community/DroolsGuvnorCacheIssue" target="_blank">http://seamframework.org/Community/DroolsGuvnorCacheIssue</a><br>
<a href="http://lists.jboss.org/pipermail/rules-users/2007-November/003917.html" target="_blank">http://lists.jboss.org/pipermail/rules-users/2007-November/003917.html</a><br>
<br>
Maybe someone had similar problem and could help me?<br>
<br>
I'm using:<br>
* JBoss <a href="http://4.2.3.GA" target="_blank">4.2.3.GA</a><br>
* Drools 5.0<br>
<br>
Regards,<br>
Piotr<br>
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</blockquote></div><br><br clear="all"><br>-- <br> Edson Tirelli<br> JBoss Drools Core Development<br> JBoss by Red Hat @ <a href="http://www.jboss.com">www.jboss.com</a><br>