Add 'count' to DB utilities
Change-Id: I1a137ceeea21c70cf9358a7bc812ca4e2fe5a240
Signed-off-by: delacruzramo <pedro.delacruzramos@altran.com>
diff --git a/osm_common/dbmemory.py b/osm_common/dbmemory.py
index c994640..d12d03d 100644
--- a/osm_common/dbmemory.py
+++ b/osm_common/dbmemory.py
@@ -161,6 +161,22 @@
except Exception as e: # TODO refine
raise DbException(str(e))
+ def count(self, table, q_filter=None):
+ """
+ Count the number of entries matching q_filter
+ :param table: collection or table
+ :param q_filter: Filter
+ :return: number of entries found (can be zero)
+ :raise: DbException on error
+ """
+ try:
+ with self.lock:
+ return sum(1 for x in self._find(table, self._format_filter(q_filter)))
+ except DbException:
+ raise
+ except Exception as e: # TODO refine
+ raise DbException(str(e))
+
def get_one(self, table, q_filter=None, fail_on_empty=True, fail_on_more=True):
"""
Obtain one entry matching q_filter