[jboss-jira] [JBoss JIRA] Assigned: (JBRULES-1388) Eval error when using multiple declarations

Eval error when using multiple declarations ------------------------------------------- Key: JBRULES-1388 URL: http://jira.jboss.com/jira/browse/JBRULES-1388 Project: JBoss Drools Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 4.0.3 Reporter: Hao Chen Assigned To: Edson Tirelli Just started testing Drools 4.0.3, and found rules like the following will cause ClassCastException when invoked when t1 : T1() t2 : T2() eval(t2.f1>0) then ... end Looked into the source code and found that: in JavaEvalBuilder.java final Declaration[] declarations = new Declaration[usedIdentifiers[0].size()]; for ( int i = 0, size = usedIdentifiers[0].size(); i < size; i++ ) { declarations[i] = context.getDeclarationResolver().getDeclaration( (String) usedIdentifiers[0].get( i ) ); } This only retrieves the declarations used in the eval, which in the example include only t2. So the Drools generated code for the eval is like: ... T2 t2 = (T2) declarations[0].getValue( (org.drools.common.InternalWorkingMemory) workingMemory, ( (org.drools.common.InternalFactHandle) tuple.get( declarations[0] ) ).getObject() ); ... which cause ClassCastException at runtime because the declarations[0] passed in is actually t1.