[rules-users] loading rules and drools classes via URLClassLoader

[ukriegel]

Hi there,
we tried to use drools jars from an url:
1. define an URLClassLoader with all the urls of the necessary drools jars
in the search path.
2. initialize a KnowledgeBaseConfiguration with that class loader
   KnowledgeBaseConfiguration knowledgeBaseCfg = KnowledgeBaseFactory
				.newKnowledgeBaseConfiguration(null, dcURLClassLoader);
3. initialize a KnowledgeBase with that configuration
   KnowledgeBase kbase = KnowledgeBaseFactory
				.newKnowledgeBase(knowledgeBaseCfg);
4. initialize a KnowledgeBuilderConfiguration with that class loader
   KnowledgeBuilderConfiguration knowledgeBuilderCfg =
KnowledgeBuilderFactory
				.newKnowledgeBuilderConfiguration(null, dcURLClassLoader);
5. initalize a knowledge builder
   kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(kbase,
					knowledgeBuilderCfg);
6. adding a knowledge resource to that builder results in a
org.drools.RuntimeDroolsException "Unable to load dialect
org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java" if the
drools jars are not in the start class path.

Did we something wrong or uses drools while adding ressources a classloader
different from that given in the configuration?.

Thanks in advance

Ulrich


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