except Exception as e: # TODO refine
raise DbException(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:
+ collection = self.db[table]
+ db_filter = self._format_filter(q_filter)
+ count = collection.count(db_filter)
+ return count
+ except DbException:
+ raise
+ except Exception as e: # TODO refine
+ raise DbException(e)
+
def get_one(self, table, q_filter=None, fail_on_empty=True, fail_on_more=True):
"""
Obtain one entry matching q_filter