[rules-users] NullPointerException when load file rules

[elMateo]

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 at nds.com>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 at lists.jboss.org [mailto:rules-users-
> > bounces at lists.jboss.org] On Behalf Of jjmartinez
> > Sent: 10 January 2012 17:05
> > To: rules-users at 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)
>
>
>
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