common DB_op __type_check_filter_attr_map()

1 files changed, 10 insertions, 0 deletions

diff --git a/src-py/db_controller.py b/src-py/db_controller.py
index 96b12079..b4ce0fc5 100644
--- a/src-py/db_controller.py
+++ b/src-py/db_controller.py
@@ -44,6 +44,16 @@ class DB_op(object):
         # for k, v in self.id_to_statement_map:
         #    yield {k, v, None}
 
+    def __type_check_filter_attr_map(self, filter_attr_map):
+        """
+        # type sanity check an attribute filter map
+        """
+        assert isinstance(filter_attr_map, dict)
+        assert len(filter_attr_map) > 0
+        for k, v in filter_attr_map.items():
+            assert isinstance(k, basestring)
+            assert isinstance(v, list)
+
     @property
     def statement_set(self):
         return self.id_to_statement_map.values()