[jboss-jira] [JBoss JIRA] (DROOLS-1507) Error message "unable to invole method" should mention DRL line

Error message "unable to invole method" should mention DRL line --------------------------------------------------------------- Key: DROOLS-1507 URL: https://issues.jboss.org/browse/DROOLS-1507 Project: Drools Issue Type: Bug Components: core engine Affects Versions: 6.5.0.Final Reporter: Geoffrey De Smet Assignee: Mario Fusco In a complex DRL file we wrote something like this: {code} when Visit(foo != null, $w : foo.weekOfYear) not Visit(foo.weekOfYear < $w) then ... end {code} throws this exception: {code} java.lang.RuntimeException: cannot invoke getter: getFoo ... at org.mvel2.optimizers.impl.refl.nodes.GetterAccessor.getValue(GetterAccessor.java:74) ... Caused by: java.lang.RuntimeException: unable to invoke method: ....foo.getWeekOfYear: target of method is null at org.mvel2.optimizers.impl.refl.nodes.GetterAccessor.getValue(GetterAccessor.java:66) at org.mvel2.optimizers.impl.refl.nodes.GetterAccessor.getValue(GetterAccessor.java:40) ... Caused by: java.lang.NullPointerException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.mvel2.optimizers.impl.refl.nodes.GetterAccessor.getValue(GetterAccessor.java:43) {code} with no DRL line.