mongoc_collection_replace_one()¶

Synopsis¶

bool
mongoc_collection_replace_one (mongoc_collection_t *collection,
                               const bson_t *selector,
                               const bson_t *replacement,
                               const bson_t *opts,
                               bson_t *reply,
                               bson_error_t *error);

Warning

If not NULL, reply is always initialized, even upon failure. Callers must call bson_destroy() to release this potential allocation.

Parameters¶

collection: A mongoc_collection_t.
selector: A bson_t containing the query to match the document for updating.
replacement: A bson_t containing the replacement document.
opts: A bson_t containing additional options or NULL.
reply: Optional. An uninitialized bson_t populated with the update result, or NULL.
error: An optional location for a bson_error_t or NULL.

opts may be NULL or a BSON document with additional command options:

readConcern: Construct a mongoc_read_concern_t and use mongoc_read_concern_append() to add the read concern to opts. See the example code for mongoc_client_read_command_with_opts().
writeConcern: Construct a mongoc_write_concern_t and use mongoc_write_concern_append() to add the write concern to opts. See the example code for mongoc_client_write_command_with_opts().
sessionId: Construct a mongoc_client_session_t with mongoc_client_start_session() and use mongoc_client_session_append() to add the session to opts. See the example code for mongoc_client_session_t.
validate: Set to false to skip client-side validation of the provided BSON documents.
bypassDocumentValidation: Set to true to skip server-side schema validation of the provided BSON documents.
collation: Configure textual comparisons. See Setting Collation Order, and the MongoDB Manual entry on Collation.
serverId: To target a specific server, include an int32 “serverId” field. Obtain the id by calling mongoc_client_select_server(), then mongoc_server_description_id() on its return value.
upsert A boolean, when true, creates a new document if no document matches the query.

Description¶

This function shall replace documents in collection that match selector with replacement.

If you pass a non-NULL reply, it is filled out with fields “modifiedCount” and “matchedCount”. If there is a server error then reply contains either a “writeErrors” array with one subdocument or a “writeConcernErrors” array. The reply must be freed with bson_destroy().

Errors¶

Errors are propagated via the error parameter.

Returns¶

Returns true if successful. Returns false and sets error if there are invalid arguments or a server or network error.

A write concern timeout or write concern error is considered a failure.

If provided, reply will be initialized and populated with the fields matchedCount, modifiedCount, and optionally upsertedId if applicable.