Re: [rules-users] Accumulate in Drools

Thanks Edson.  I don't why but when i am using the below rule in my drl it's failing to compile. Not sure if i am doing something stupid or this is an issue with environment or the drl. I am attaching the drl file with the mail. The error that i get is : - testTestsRulesEngine( at suitability.RulesEngine.<init>( at suitability.TestsRulesEngine.<init>( at suitability.TestsRulesEngineTest.setUp( Caused by: suitability.TestsRulesEngineTest)suitability.RulesEngineException: Could not load/compile rules file: testAccumulate.drlRulesEngine.java:39)TestsRulesEngine.java:13)TestsRulesEngineTest.java:72)java.lang.NullPointerExceptionat org.drools.common.AbstractRuleBase.addPackages( at org.drools.reteoo.ReteooRuleBase.addPackage( at suitability.RulesEngine.<init>( ... 14 moreAbstractRuleBase.java:434)ReteooRuleBase.java:388)RulesEngine.java:36) Regards, Manav ________________________________ From: Edson Tirelli <tirelli(a)post.com&gt; To: Manav <manav7574(a)yahoo.com>; Rules Users List <rules-users(a)lists.jboss.org&gt; Sent: Mon, August 16, 2010 7:46:54 PM Subject: Re: [rules-users] Accumulate in Drools      You can't use the cast and the method call in a regular constraint. You can use it as part of an expression. So:  $min_score : Number ()    from accumulate (Client (productTypeExperience.keySet contains $name,                      $score : productTypeExperience[$name],                      min ( ((ExperienceLevel)$score).value() ) )      We are working on the support of free form expressions on constraints for Drools 6 (not sure we can make it for 5.2).      Edson 2010/8/15 Manav <manav7574(a)yahoo.com&gt; Hi, --   Edson Tirelli   JBoss Drools Core Development   JBoss by Red Hat @ www.jboss.com