mongoc_collection_set_read_prefs()
Synopsis
void
mongoc_collection_set_read_prefs (mongoc_collection_t       *collection,
                                  const mongoc_read_prefs_t *read_prefs);Parameters
| collection | |
| read_prefs | 
Description
Sets the default read preferences to use for operations on collection not specifying a read preference.
The global default is MONGOC_READ_PRIMARY: if the client is connected to a replica set it reads from the primary, otherwise it reads from the current MongoDB server.
Please see the MongoDB website for a description of Read Preferences.