I've downloaded last stable build (number 3845, made 2010-04-14) from
Drools Hudson (http://hudson.jboss.org/hudson/job/drools/). After
running my tests I got same problem (but little different StackTrace):
java.lang.NullPointerException
at org.drools.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java:235)
at org.drools.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java:413)
at
org.drools.common.AbstractRuleBase.removeRule(AbstractRuleBase.java:732)
at
org.drools.common.AbstractRuleBase.removePackage(AbstractRuleBase.java:660)
at
org.drools.impl.KnowledgeBaseImpl.removeKnowledgePackage(KnowledgeBaseImpl.java:166)
Maybe I should download Drools from other place?
Piotr
On 2010-04-21 19:36, Edson Tirelli wrote:
I fixed a couple problems with rule removal in trunk. Can you check
if trunk works for you?
Edson
2010/4/21 Piotr Jedrychowski <[email protected]
<mailto:[email protected]>>
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
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--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com <http://www.jboss.com>
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https://lists.jboss.org/mailman/listinfo/rules-users
