It seems the package you are trying to add is null... did you checked for parsing/compilation errors before trying to add the package into the rulebase?

PackageBuilder.getErrors()

   []s
   Edson

2008/12/10 Jagathesh <jagamani@yahoo.com>
Hi,
When I pointed the rules from Drools 4.0.7 to Drools 5.0.0M2, I'm getting the following errors at runtime. I also tried Drools 5.0.0M3 (same error). The error occurs while adding a package.
Could someone help me? Do I've to do something differently for 5.0.0M2?
 
java.lang.NullPointerException
 at org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:420)
 at org.drools.reteoo.ReteooRuleBase.addPackage(ReteooRuleBase.java:381)
 
Thanks,
Jagathesh
 


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