[rules-users] Drools in jBPM

[Mark Proctor]

Have you tried using Drools Flow instead?

Mark
On 30/12/2009 16:49, fraction8 wrote:
> I have problem in using drools in simple jBPM application. Every thing works
> fine while it is runs under JUNIT but when I export it to jBPM i got
> exception
>
> org.jboss.resteasy.spi.UnhandledException:
> org.drools.RuntimeDroolsException: Unable to resolve class
> 'myclass.jbpm.vrk.Claim'
>
> org.jboss.resteasy.core.SynchronousDispatcher.handleApplicationException(SynchronousDispatcher.java:319)
>
> org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:230)
>
> org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:206)
>
> org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:360)
>
> org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:173)
>
> org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:93)
>
> org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:68)
> 	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
>
> org.jboss.bpm.console.server.util.GWTJsonFilter.doFilter(GWTJsonFilter.java:59)
>
> root cause
>
> org.drools.RuntimeDroolsException: Unable to resolve class
> 'myclass.jbpm.vrk.Claim'
>
> org.drools.base.ClassFieldAccessorCache.getClass(ClassFieldAccessorCache.java:269)
>
> org.drools.base.ClassFieldAccessorCache.getReadAcessor(ClassFieldAccessorCache.java:241)
>
> org.drools.base.ClassFieldAccessorStore.wire(ClassFieldAccessorStore.java:379)
>
> org.drools.base.ClassFieldAccessorStore.merge(ClassFieldAccessorStore.java:270)
> 	org.drools.common.AbstractRuleBase.addPackages(AbstractRuleBase.java:466)
> 	org.drools.reteoo.ReteooRuleBase.addPackages(ReteooRuleBase.java:379)
>
> org.drools.impl.KnowledgeBaseImpl.addKnowledgePackages(KnowledgeBaseImpl.java:121)
> 	myclass.jbpm.drools.DroolsRulesManager.runDrlRule(Unknown Source)
>
>
> My drl is very simple:
> import myclass.jbpm.vrk.Claim;
>
> rule "Rule 01"
>      when
>          $claim : Claim( $date : date, $elements : elements, $simpleClaim :
> simpleClaim )
>          eval( $elements<= 10 )
>      then
>      	$claim.setSimpleClaim( true );
>          System.out.println("It's a simple claim!: " + $date + ", elements: "
> + $elements + ", simple: " + $simpleClaim);
> end
>
> The only way to solve it is to write new ClassLoader and pass it to
> KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(null,
> myNewClassLoader);
> , or this error is caused by something else?
>