object_list method, when listing all objects of a

resource type without filters calls filter_rows_no_anchor
method unnecessarily when there is no filters in the request.

Fixed it by returning early with count of columns read from
the OBJ_FQ_NAME_TABLE.

Closes-Jira-Bug: CEM-18858
Signed-off-by: Ignatious Johnson <ijohnson@juniper.net>
Change-Id: I9975d0b23d72277fbf60abcad4f57101296ce6c3

Author: cijohnson

src/config/common/cfgm_common/vnc_cassandra.py

@@ -1007,6 +1007,10 @@ def filter_rows_no_anchor():
                     return list(filt_obj_infos.values()), marker
                 # end filter_rows_no_anchor
 
+                if count and not filters:
+                    # when listing all objects of a type
+                    # return early if only count query is in request
+                    return (True, sum(1 for col in cols), None)
                 filtered_rows, ret_marker = filter_rows_no_anchor()
                 children_fq_names_uuids.extend(filtered_rows)