[rules-users] reloadKnowledgeBase java.lang.NullPointerException

[Wolfgang Laun]

Browsing over the text, this hit my eye: DROOLS_GUVNOR_*CHAGNE*_SET_XML_PATH

Change this to CHANGE!
-W


On 30 August 2011 11:32, ayonchak <ayon.chakraborty at genworth.com> wrote:

> Hi All,
>
> I am getting Nullpointer exception the application is trying to
> reloadKnwledgeBase. I have the following code in application.
>
> public void init() {
>                logger.info("Group Rule Engine Initiated..!!");
>                /**
>                 * Polling interval needs to be externalized
>                 */
>
>                knowledgeAgent =
> KnowledgeAgentFactory.newKnowledgeAgent("FiveSeries");
>                knowledgeAgent.applyChangeSet(ResourceFactory
>                                .newFileResource(propertyReader
>
>  .getProperty("DROOLS_GUVNOR_CHAGNE_SET_XML_PATH")));
>
>                ResourceFactory.getResourceChangeScannerService().start();
>                ResourceFactory.getResourceChangeNotifierService().start();
>
>                if (knowledgeAgent != null &&
> knowledgeAgent.getKnowledgeBase()!=null &&
> !knowledgeAgent.getKnowledgeBase().getKnowledgePackages().isEmpty()) {
>                        knowledgeBase = knowledgeAgent.getKnowledgeBase();
>                }
>                logger.info("Group Rule Engine is ready to use..!!");
>        }
>
>        public void reloadKnowledgeBase() {
>                if (knowledgeAgent != null &&
> knowledgeAgent.getKnowledgeBase()!=null &&
> !knowledgeAgent.getKnowledgeBase().getKnowledgePackages().isEmpty()) {
>                        knowledgeBase = knowledgeAgent.getKnowledgeBase();
>                        logger.debug("KnowledgeBase reloaded..!!");
>                } else {
>                        logger.info("KnowledgeBase not reloaded..!!");
>
>  ResourceFactory.getResourceChangeScannerService().stop();
>
>  ResourceFactory.getResourceChangeNotifierService().stop();
>                        init();
>                }
>        }
>
> reloadKnowledgeBase() is called once in application during Login. The
> problem is occurring in Development application. When I am using that
> Change-Set.xml in my local application, it is working perfectly fine. I m
> not getting the problem. I bounced both Jboss and application servers but
> still no luck!
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/reloadKnowledgeBase-java-lang-NullPointerException-tp3295019p3295019.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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>
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