[rules-users] Unable to load dialect 'org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration:mvel error

[Edson Tirelli]

   This is a classpath problem for sure. Try deleting the MVEL jar and
downloading a fresh one, version 1.3.9, just to make sure it is not corrupt.
Also, it would be good to check for eventual classpath clashes.

2009/4/25 <rsundaar at aretus.biz>

> Hi,
>
> I am using Drools 4.0.7 and was able to successfully create a
> knowledgebase. I am trying to install the knowledgebase in tomcat/axis2. I
> am running into problems here. The exception is below:
>
> org.drools.RuntimeDroolsException: Unable to load dialect
> 'org.drools.rule.build
> er.dialect.mvel.MVELDialectConfiguration:mvel'
>         at
> org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBui
> lderConfiguration.java:160)
>         at
> org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigura
> tionMap(PackageBuilderConfiguration.java:146)
>         at
> org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderCo
> nfiguration.java:121)
>
>
> The files in the lib directory in the aar file are below:
>
> C:\Users\rsundaar\projects\temp\SimpleService>jar tvf SimpleService.aar
>      0 Sat Apr 25 21:23:36 EDT 2009 META-INF/
>     71 Sat Apr 25 21:23:36 EDT 2009 META-INF/MANIFEST.MF
>      0 Sat Apr 25 07:14:54 EDT 2009 com/
>      0 Sat Apr 25 07:14:54 EDT 2009 com/satsoc/
>      0 Sat Apr 25 08:20:12 EDT 2009 com/satsoc/prototype/
>   1216 Sat Apr 25 07:54:36 EDT 2009 com/satsoc/prototype/Message.class
>   2293 Sat Apr 25 21:22:14 EDT 2009
> com/satsoc/prototype/SimpleService.class
>      0 Thu Apr 23 06:34:56 EDT 2009 conf/
>      0 Sat Apr 25 20:29:14 EDT 2009 lib/
>  92015 Sat Mar 21 17:06:18 EDT 2009 lib/antlr-runtime.jar
> 109131 Fri Mar 20 23:56:50 EDT 2009 lib/drools-analytics-4.0.7.jar
>  10618 Fri Mar 20 23:56:50 EDT 2009 lib/drools-ant-4.0.7.jar
> 560267 Fri Mar 20 23:56:50 EDT 2009 lib/drools-compiler-4.0.7.jar
> 1096031 Fri Mar 20 23:56:48 EDT 2009 lib/drools-core-4.0.7.jar
>  78626 Fri Mar 20 23:56:48 EDT 2009 lib/drools-decisiontables-4.0.7.jar
>  23499 Fri Mar 20 23:56:48 EDT 2009 lib/drools-jsr94-4.0.7.jar
>  13749 Sat Mar 21 17:06:18 EDT 2009 lib/jsr94.jar
> 121070 Sat Mar 21 17:06:18 EDT 2009 lib/junit.jar
> 499068 Sat Mar 21 17:06:18 EDT 2009 lib/jxl.jar
> 870188 Sat Mar 21 17:06:18 EDT 2009 lib/mvel.jar
> 12745047 Sat Mar 21 16:55:50 EDT 2009 lib/org.drools.eclipse_4.0.7.jar
> 4372548 Sat Mar 21 15:35:48 EDT 2009
> lib/org.eclipse.jdt.core_3.4.4.v_894_R34x.j
> ar
> 895924 Sat Mar 21 17:06:18 EDT 2009 lib/xercesImpl.jar
> 109318 Sat Mar 21 17:06:18 EDT 2009 lib/xml-apis.jar
> 119888 Sat Mar 21 17:06:18 EDT 2009 lib/xpp3.jar
>  24677 Sat Mar 21 21:53:52 EDT 2009 lib/xpp3_min.jar
>
>
> I have looked through some of the earlier postings. Based on that I have
> made sure, mvel.jar and org.eclipse.jdt.core_3.4.4.v_894_R34x.jar are in the
> lib directory and still get the same error.
>
> Any clues? I would appreciate any help I can get from you!!
>
> Thanks,
> Ravi.
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>


-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss, a division of Red Hat @ www.jboss.com
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