Re: [rules-users] Simple rulebase not behaving as expected

Hi, I have the following simple rulebase: package org.drools.examples rule "Hello World" when o : Object( ) then System.out.println("Hello world (o=" + o + ")"); end rule "Goodbye World" when not Object( ) then System.out.println("Goodbye cruel world"); end and the following code: public class TestReadRuleFile { public static void main(String[] args) throws Exception { PackageBuilder builder = new PackageBuilder(); builder.addPackageFromDrl( new InputStreamReader( TestReadRuleFile.class.getResourceAsStream("test.drl"))); Package pkg = builder.getPackage(); RuleBase rulebase = RuleBaseFactory.newRuleBase(); rulebase.addPackage(pkg); StatefulSession session = rulebase.newStatefulSession(); session.fireAllRules(); } } which produces the following output: Hello world (o=org.drools.reteoo.InitialFactImpl@4dde85f0) I expected the "Goodbye World" rule to fire, as there should not be any Objects in the working memory. If I change my code to insert an object into the working memory as follows: session.insert(new Object()); I now get the following output: Hello world (o=org.drools.reteoo.InitialFactImpl@4dde85f0) Hello world (o=java.lang.Object@17ba38f) In this case, I expected the "Hello World" rule to fire only once. Any thoughts on what I'm doing wrong here? Thanks, Dean. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users