[jboss-jira] [JBoss JIRA] (JBRULES-3130) Regression. Rule misfires due to constraint list[0].field1/2 in two rules

Regression. Rule misfires due to constraint list[0].field1/2 in two rules ------------------------------------------------------------------------- Key: JBRULES-3130 URL: https://issues.jboss.org/browse/JBRULES-3130 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 5.2.0.Final Reporter: Wolfgang Laun Assignee: Edson Tirelli Priority: Critical Fix For: 5.3.2.Final, 5.4.0.Beta1 A pair of constraints suich as list[0].a == null and list[0].b == null in two different rules causes one of the rules not to fire and the other one to fire erroneously (see results at the end). Java: ------------------------------------------------------------ public class Three { private String a; private String b; private String c; public Three( String a, String b, String c ){ this.a = a; this.b = b; this.c = c; } public String getA(){ return a; } public String getB(){ return b; } public String getC(){ return c; } } --------------------------------------------------------------- import java.util.*; public class ListOfThree { private List<Three> list; private Class<?> clazz; public ListOfThree( Three three, Class<?> clazz ){ list = new ArrayList<Three>(); list.add( three ); this.clazz = clazz; } public List<Three> getList(){ return list; } public Class<?> getClazz(){ return clazz; } } ---------------------------------------------------------------- // Insertion of facts Three three = new Three( "a", "b", "c" ); ListOfThree listof3 = new ListOfThree( three, java.lang.Object.class ); kSession.insert( listof3 ); three = new Three( "x", null, "z" ); listof3 = new ListOfThree( three, java.lang.String.class ); kSession.insert( listof3 ); three = new Three( null, "q", "r" ); listof3 = new ListOfThree( three, java.lang.Integer.class ); kSession.insert( listof3 ); -------------------------------------------------------------------------- rule 'rule1' // dialect "mvel" // does not matter when ListOfThree( list[0].a == null, $c: clazz ); then System.out.println( "rule1 " + $c.getSimpleName() ); end rule 'rule2' // dialect "mvel" // does not matter when ListOfThree( list[0].b == null, $c: clazz ); then System.out.println( "rule2 " + $c.getSimpleName() ); end --------------------------------------------------------------- Results: rule2 Integer rule1 Integer