[rules-users] Class Cast Exception

[Mark Proctor]

Doesn't Seam have it's over version of Drools, maybe thats on a 
different version?

Robert Morse wrote:
> This has come up before, but I think my circumstances may be different.
> I'm using Seam 2.0.0.CR2, Drool 4.0.3, and JBoss AS 4.2.1 along with 
> all of the relevant support jars.
> I have a Java Application that uses the JBoss server for entity beans, 
> etc.   It uses Drools PackageBuilder, loads the drl file and fires the 
> rules without any problems.
>
> I'm now moving that same functionality to a stateful Seam bean.   When 
> a user clicks on a button, I invoke an action which executes the same 
> code as in the stand alone java application.   However, when it 
> attempts to create a new PackageBuilder via new PackageBuilder() it 
> throws:
>
> 18:05:18,610 ERROR [STDERR] org.drools.RuntimeDroolsException: Unable 
> to load dialect 
> 'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java'
> followed by:
>
> 18:05:18,621 ERROR [STDERR] Caused by: java.lang.ClassCastException: 
> org.drools.rule.builder.dialect.java.JavaDialectConfiguration
> 18:05:18,621 ERROR [STDERR]     at 
> org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:147) 
>
>
> I've seen this posted several times, and the suggested cause is 
> missing jars in the classpath.   However, I have all of the 4.0.3 
> Drools jars, mvel14, and jdt-core jars in place.
> Obviously, it's some configuration problem since I have the exact 
> thing working as a java application.
>
> Any suggestions?
>
> Thanks.
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>