[jboss-jira] [JBoss JIRA] Resolved: (JBRULES-2421) org.drools.RuntimeDroolsException: unable to determine ValueType for Class [class MyClass] on IBM JVM with JIT enabled

org.drools.RuntimeDroolsException: unable to determine ValueType for Class [class MyClass] on IBM JVM with JIT enabled ---------------------------------------------------------------------------------------------------------------------- Key: JBRULES-2421 URL: https://jira.jboss.org/jira/browse/JBRULES-2421 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 4.0.7 Reporter: Tihomir Surdilovic Assignee: Tihomir Surdilovic Fix For: 4.0.8 On IBM JVM with JIT enabled using Drools 4.0.7 often the following exception occurs: org.drools.RuntimeDroolsException: unable to determine ValueType for Class [class MyClass] at org.drools.base.ValueType.determineValueType(ValueType.java:222) at org.drools.base.ClassObjectType.<init>(ClassObjectType.java:56) at org.drools.reteoo.Rete$ClassObjectTypeConf.<init>(Rete.java:442) at org.drools.reteoo.Rete.assertObject(Rete.java:152) ... We have determined that in the IBM JVN with JIT enabled, the expression "XXXX instanceof Object" fails sometimes. On the other hand expression "XXXX isAssignableFrom(YYYYYY) ... " works as expected. The code change required here is in org.drools.base.ValueType change: ... } else if ( clazz instanceof Object ) { return ValueType.OBJECT_TYPE; ... to ... else if ( Object.class.isAssignableFrom( clazz ) ) { return ValueType.OBJECT_TYPE; ...