=== modified file 'dhis-2/dhis-services/dhis-service-core/src/main/java/org/hisp/dhis/schema/Jackson2PropertyIntrospectorService.java'
--- dhis-2/dhis-services/dhis-service-core/src/main/java/org/hisp/dhis/schema/Jackson2PropertyIntrospectorService.java	2014-09-30 07:02:57 +0000
+++ dhis-2/dhis-services/dhis-service-core/src/main/java/org/hisp/dhis/schema/Jackson2PropertyIntrospectorService.java	2014-09-30 09:27:03 +0000
@@ -48,6 +48,7 @@
 import java.lang.reflect.Method;
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Map;
@@ -67,7 +68,13 @@
     {
         Map<String, Property> propertyMap = Maps.newHashMap();
         ClassMetadata classMetadata = sessionFactory.getClassMetadata( clazz );
-        List<String> classPropertyNames = Lists.newArrayList( classMetadata.getPropertyNames() );
+        List<String> classPropertyNames = new ArrayList<>();
+
+        if ( classMetadata != null )
+        {
+            classPropertyNames = Lists.newArrayList( classMetadata.getPropertyNames() );
+        }
+
         List<String> classFieldNames = ReflectionUtils.getAllFieldNames( clazz );
 
         // TODO this is quite nasty, should find a better way of exposing properties at class-level