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