&quot;scott.stark(a)jboss.org&quot; wrote : This is implemented in the metavalue project now. I think you are again doing it wrong, as with SimpleMetaValueComparator. You should add this info to SimpleMetaType. As you have all the info required in AbstractInstanceClassFactory::setValue. | protected void setValue(BeanInfo beanInfo, PropertyInfo propertyInfo, Object object, Object unwrapValue) | throws Throwable | { | TypeInfo type = propertyInfo.getType(); | if(unwrapValue == null && type.isPrimitive()) | { | MetaType metaType = MetaTypeFactory.getInstance().resolve(type); | SimpleMetaType smt = SimpleMetaType.class.cast(metaType); | unwrapValue = smt.getDefaultValue(); // <-- missing method | } | propertyInfo.set(object, unwrapValue); | } | More OO. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4191439#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...