[validation.py] Adapt Object Has Attribute Check

Author: fschrader1992

odml/validation.py

@@ -133,8 +133,9 @@ def object_required_attributes(obj):
     for arg in args:
         if arg[1] == 1:
             if not hasattr(obj, arg[0]):
-                msg = "%s has no attribute %s" % (obj.format().name.capitalize(), arg[0])
-                yield AttributeError(obj, msg, LABEL_WARNING)
+                msg = "Missing attribute %s for %s" % (obj.format().name.capitalize(), arg[0])
+                yield ValidationError(obj, msg, LABEL_WARNING)
+                return
             obj_arg = getattr(obj, arg[0])
             if not obj_arg and not isinstance(obj_arg, bool):
                 msg = "%s %s undefined" % (obj.format().name.capitalize(), arg[0])