9331: Empty handle, bsddb backend and place

gramps/gen/db/generic.py

@@ -1588,7 +1588,7 @@ class DbGeneric(DbWriteBase, DbReadBase, UpdateCallback, Callback):
         >>> self.get_from_name_and_handle("Person", "a7ad62365bc652387008")
         >>> self.get_from_name_and_handle("Media", "c3434653675bcd736f23")
         """
-        if table_name in self.get_table_func():
+        if table_name in self.get_table_func() and handle:
             return self.get_table_func(table_name,"handle_func")(handle)
         return None
 

gramps/gen/lib/struct.py

@@ -211,15 +211,12 @@ class Struct(object):
             current = getattr(current, item)
         return current
 
-    def get_media_from_handle(self, handle):
-        return self.db.get_from_name_and_handle(handle.classname, str(handle))
-
     def handle_join(self, item):
         """
         If the item is a handle, look up reference object.
         """
         if isinstance(item, HandleClass) and self.db:
-            obj = self.get_media_from_handle(item)
+            obj = self.db.get_from_name_and_handle(item.classname, str(item))
             if obj:
                 return Struct(obj.to_struct(), self.db)
             else:
@@ -263,7 +260,8 @@ class Struct(object):
             if struct is None:       # invalid part to set, skip
                 return
             if isinstance(struct, HandleClass):
-                struct = self.get_media_from_handle(struct).to_struct()
+                obj = self.db.get_from_name_and_handle(struct.classname, str(struct))
+                struct = obj.to_struct()
             # keep track of primary object for update, below
             if isinstance(struct, dict) and "_class" in struct and self.primary_object_q(struct["_class"]):
                 primary_obj = struct

gramps/plugins/database/bsddb_support/read.py

@@ -716,7 +716,7 @@ class DbBsddbRead(DbReadBase, Callback):
         >>> self.get_from_name_and_handle("Person", "a7ad62365bc652387008")
         >>> self.get_from_name_and_handle("Media", "c3434653675bcd736f23")
         """
-        if table_name in self.get_table_func():
+        if table_name in self.get_table_func() and handle:
             return self.get_table_func(table_name,"handle_func")(handle)
         return None