Hi, The last column in my decision table is an ACTION column, And I'm using java utility method to execute some code. But when I'm trying to run the application I'm getting the Predicate: javaclass.doSomething() must be a Boolean expression. Please help me out. Thanks in advance. -- View this message in context: http://drools.46999.n3.nabble.com/Reg-ACTION-cell-in-decision-table-tp368... 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

Hi Laune, Thank you very much for the reply, After your comment i cross checked the decision table and i think i have MyUtilityClass.doSomething(fact, "$param") instead of MyUtilityClass.doSomething(fact,"$param"); where i think i missed the semi-column at the end. After i added it now I am getting the error as stack trace shown below: Exception in thread "main" java.lang.IndexOutOfBoundsException: Error trying to access field at position 0 at org.drools.factmodel.ClassDefinition.getField(ClassDefinition.java:164) at org.drools.rule.builder.PatternBuilder.processPositional(PatternBuilder.java:424) at org.drools.rule.builder.PatternBuilder.processConstraintsAndBinds(PatternBuilder.java:384) at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:305) at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:129) at org.drools.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:65) at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:81) at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1981) at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:792) at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:354) at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:585) at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:34) at com.sample.drools.Test.main(Test.java:35) Please Let me know whether i am still missing any thing -- View this message in context: http://drools.46999.n3.nabble.com/Reg-ACTION-cell-in-decision-table-tp368... 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