Re: [rules-users] NullPointerException when load file rules

I'm using Drools 5.4.0 Beta 1 and my DRL is the Hello World of Drools :) (all my application is the Hello World of Drools, because I'm trying to do a OSGi bundle with this application). In my OSGi framework is running drools.core, drools.compiler and knowledge-api, and others bundles. Thanks for reply me. On Tue, Jan 10, 2012 at 6:15 PM, Swindells, Thomas <TSwindells(a)nds.com&gt; wrote: > > Looking at the stack trace, if you are on the same version as drools as me > it looks like it is this line > this.rule.setDialect( getDialect().getId() ); > > The most likely reason is your DRL isn't valid - perhaps where you are > specifying the dialect, or it could be your > Dependencies aren't right or something. > Which version of drools are you using. Have you tried reducing your DRL > file to the minimum that generates the error - then post that DRL if you > need further help. > > Thomas > > > -----Original Message----- > > From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users- > > bounces(a)lists.jboss.org] On Behalf Of jjmartinez > > Sent: 10 January 2012 17:05 > > To: rules-users(a)lists.jboss.org > > Subject: Re: [rules-users] NullPointerException when load file rules > > > > Anybody can help me? I don't know why my application show these errors. > > > > Thanks in advance! > > > > java.lang.NullPointerException >        at > org.drools.rule.builder.RuleBuildContext.<init>(RuleBuildContext.java:88) >        at > org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1149) >        at > org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:636) >        at > org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:266) >        at > org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:458) >        at > org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28) >        at drools.ejemplos.DroolsTest.readKnowledgeBase(DroolsTest.java:85) >        at drools.ejemplos.DroolsTest.execute(DroolsTest.java:64) >        at drools.ejemplos.DroolsTest.<init>(DroolsTest.java:56) >        at drools.ejemplos.Activator.start(Activator.java:14) >        at > org.knopflerfish.framework.BundleImpl.start0(BundleImpl.java:356) >        at > org.knopflerfish.framework.BundleThread.run(BundleThread.java:107) > > > > ************************************************************************************** > This message is confidential and intended only for the addressee. If you > have received this message in error, please immediately notify the > postmaster(a)nds.com and delete it from your system as well as any copies. The > content of e-mails as well as traffic data may be monitored by NDS for > employment and security purposes. To protect the environment please do not > print this e-mail unless necessary. > > NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 > 4EX, United Kingdom. A company registered in England and Wales. Registered > no. 3080780. VAT no. GB 603 8808 40-00 > > ************************************************************************************** > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users