Re: [rules-users] Error in MVEL execution (optimization?)

Here is a very simple test. Note that utilMethod is called twice for the first rule, but is never called for the other two rules. If you convert to Java dialect then things execute as expected. TestRules.drl: #created on: Jan 5, 2012 package com.sample import com.sample.TestUtility; rule "First Rule" when $tf : TestFact(TestUtility.utilMethod(s, "Value1") == true && i > 0 ) then System.out.println("First Rule Fires"); end rule "Second Rule" when $tf : TestFact(TestUtility.utilMethod(s, "Value2") == true && i > 0 ) then System.out.println("Second Rule Fires"); end rule "Third Rule" when $tf : TestFact(TestUtility.utilMethod(s, "Value3") == true && i > 0 ) then System.out.println("Third Rule Fires"); end TestUtility.java: package com.sample; public class TestUtility { public static Boolean utilMethod(String s1, String s2) { Boolean result = null; if (s1 != null) { result = s1.equals(s2); } System.out.println("in utilMethod >" + s1 + "< >" + s2 + "< returns " + result); return result; } } TestDriver.java: public static final void main(String[] args) { try { // load up the knowledge base KnowledgeBase kbase = readKnowledgeBase(); StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(); // setup the debug listeners ksession.addEventListener(new DebugAgendaEventListener()); ksession.addEventListener(new DebugWorkingMemoryEventListener()); KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test"); // go ! TestFact fact = new TestFact(); fact.setS("asdf"); fact.setI(10); ksession.insert(fact); ksession.fireAllRules(); logger.close(); } catch (Throwable t) { t.printStackTrace(); } } Output: in utilMethod >asdf< >Value1< returns false in utilMethod >asdf< >Value1< returns false ==>[ObjectInsertedEventImpl: getFactHandle()=[fact 0:1:31556811:31556811:1:DEFAULT:com.sample.TestFact@1e184cb], getObject()=com.sample.TestFact@1e184cb, getKnowledgeRuntime()=org.drools.impl.StatefulKnowledgeSessionImpl@70610a, getPropagationContext()=PropagationContextImpl [activeActivations=0, dormantActivations=0, entryPoint=EntryPoint::DEFAULT, factHandle=[fact 0:1:31556811:31556811:1:DEFAULT:com.sample.TestFact@1e184cb], leftTuple=null, originOffset=-1, propagationNumber=3, rule=null, type=0]] -- View this message in context: http://drools.46999.n3.nabble.com/Error-in-MVEL-execution-optimization-tp... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users