[rules-users] Exception in thread "main" org.drools.ProviderInitializationException

[Mark Proctor]

you are mixing jar versions. Specifically project 5.1.1 and product 5.0.1.

If you are customer with a Red Hat BRMS subscription, can you please ask this question on the customer support portal. Where it will be handled under SLA for guaranteed response times.

Either way, you can't mix and match jar versions.

Mark
On 16 Sep 2013, at 09:24, poonam.ligade at wipro.com wrote:

> 
>  Hi,
> 
> I have included following jars:
> 
> drools-api-5.0.1.BRMS
> drools-compiler-5.1.1
> drools-api-5.1.1
> drools-core-5.1.1
> 
> I am getting below error:
> 
> Exception in thread "main" org.drools.ProviderInitializationException: Provider org.drools.builder.impl.KnowledgeBuilderProviderImpl could not be set.
>     at org.drools.builder.KnowledgeBuilderFactory.loadProvider(KnowledgeBuilderFactory.java:111)
>     at org.drools.builder.KnowledgeBuilderFactory.getKnowledgeBuilderProvider(KnowledgeBuilderFactory.java:101)
>     at org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(KnowledgeBuilderFactory.java:29)
>     at com.comp.drools.SimpleRule.createKnowledgeBase(SimpleRule.java:84)
>     at com.comp.drools.SimpleRule.main(SimpleRule.java:32)
> Caused by: java.lang.ClassNotFoundException: org.drools.builder.impl.KnowledgeBuilderProviderImpl
>     at java.net.URLClassLoader$1.run(Unknown Source)
>     at java.net.URLClassLoader$1.run(Unknown Source)
>     at java.security.AccessController.doPrivileged(Native Method)
>     at java.net.URLClassLoader.findClass(Unknown Source)
>     at java.lang.ClassLoader.loadClass(Unknown Source)
>     at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
>     at java.lang.ClassLoader.loadClass(Unknown Source)
>     at java.lang.Class.forName0(Native Method)
>     at java.lang.Class.forName(Unknown Source)
>     at org.drools.builder.KnowledgeBuilderFactory.loadProvider(KnowledgeBuilderFactory.java:108)
>     ... 4 more
> 
> I have configured eclipse JBPM plugin
> using java 7 and apache tomcat 7
> 
> Please help me finding solution ASAP.
> 
> Thanks,
> Poonam.
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