Bertrand, You're probably missing the org.drools.runtime.pipeline.impl.XStreamTransformerProviderImpl class in your classpath? Make sure you add the drools-transformer-xstream-5.x.jar to your classpath. Kris ----- Original Message ----- From: Bertrand Grottier To: rules-users(a)lists.jboss.org Sent: Tuesday, March 09, 2010 2:14 PM Subject: [rules-users] XStream Hello, My general aim is to load facts from a xml file. I tried to modify an example furnished in the documentation (Example 3.37. Constructing a pipeline). I get an exception on the following line: Transformer transformer = PipelineFactory.newXStreamFromXmlTransformer( xstream ); The message is the following: org.drools.ProviderInitializationException: Provider org.drools.runtime.pipeline.impl.XStreamTransformerProviderImpl could not be set. Am I going in the right direction ? (I am a newbie) If yes, have you got an explanation for my problem. Otherwise, what is the simplest way to achieve my goal ? Thank you in advance for your help. Regards, Benoît PS : I am using Drools 5.0 ------------------------------------------------------------------------------ Envie de naviguer sur Internet sans laisser de trace? La solution avec Internet Explorer 8 ------------------------------------------------------------------------------ _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm