Hashed field on Integer.this causes a RuntimeException ------------------------------------------------------ Key: DROOLS-94 URL: https://issues.jboss.org/browse/DROOLS-94 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Reporter: Mario Fusco Assignee: Mario Fusco Fix For: 5.6, 6.0.0.Beta1 Having the following drl {code} global java.util.List list; rule R when $i : Integer( this == 1 ) then list.add( $i ); end rule S when $i : Integer( this == 2 ) then list.add( $i ); end rule T when $i : Integer( this == 3 ) then list.add( $i ); end {code} and inserting an Integer(1) in the ksession causes the following Exception: org.drools.core.RuntimeDroolsException: Conversion to long not supported from java.lang.Integer at org.drools.core.base.extractors.BaseObjectClassFieldReader.getLongValue(BaseObjectClassFieldReader.java:126) Note that it is necessary to have the constraint on Integer.this in 3 different rule in order to enable the field hashing.