(self, database_name,
                     collection_name=None, index_name=None)
Purge an index from the index cache.

        If `index_name` is None purge an entire collection.

        If `collection_name` is None purge an entire database.
Purge an index from the index cache.
Purge an index from the index cache .
def _purge_index(self, database_name,
                     collection_name=None, index_name=None):
        """Purge an index from the index cache.

        If `index_name` is None purge an entire collection.

        If `collection_name` is None purge an entire database.
        """
        with self.__index_cache_lock:
            if not database_name in self.__index_cache:
                return

            if collection_name is None:
                del self.__index_cache[database_name]
                return

            if not collection_name in self.__index_cache[database_name]:
                return

            if index_name is None:
                del self.__index_cache[database_name][collection_name]
                return

            if index_name in self.__index_cache[database_name][collection_name]:
                del self.__index_cache[database_name][collection_name][index_name]
def _purge_index ( self , database_name , collection_name = None , index_name = None ) : with self . __index_cache_lock : if not database_name in self . __index_cache : return if collection_name is None : del self . __index_cache [ database_name ] return if not collection_name in self . __index_cache [ database_name ] : return if index_name is None : del self . __index_cache [ database_name ] [ collection_name ] return if index_name in self . __index_cache [ database_name ] [ collection_name ] : del self . __index_cache [ database_name ] [ collection_name ] [ index_name ]