MONGOC_DATABASE_WRITE_COMMAND_WITH_OPTS(3)

NAME
mongoc_database_write_command_with_opts - mongoc_database_write_command_with_opts()

SYNOPSIS

bool
mongoc_database_write_command_with_opts (mongoc_database_t *database,
                                         const bson_t *command,
                                         const bson_t *opts,
                                         bson_t *reply,
                                         bson_error_t *error);

Execute a command on the server, applying logic that is specific to commands that write, and taking the MongoDB server version into account. To send a raw command to the server without any of this logic, use mongoc_database_command_simple.

Use this function for commands that write such as “drop” or “createRole” (but not for “insert”, “update”, or “delete”, see Basic Write Operations). Write concern is applied from opts, or else from database. The write concern is omitted for MongoDB before 3.4. Collation is applied from opts (see example for the “distinct” command with opts). No read concern or read preferences are applied.

reply is always initialized, and must be freed with bson_destroy().

PARAMETERS

•   database: A mongoc_database_t.

•   db_name: The name of the database to run the command on.

•   command: A bson_t containing the command specification.

•   opts: A bson_t containing additional options.

•   reply: A location for the resulting document.

•   error: An optional location for a bson_error_t or NULL.

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

•   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.

•   collation: Configure textual comparisons. See Setting Collation Order, and the MongoDB Manual entry on Collation. Collation requires MongoDB 3.2 or later, otherwise an error is returned.

•   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.

    Consult the MongoDB Manual entry on Database Commands for each command’s arguments.

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.

BASIC WRITE OPERATIONS

Do not use this function to call the basic write commands “insert”, “update”, and “delete”. Those commands require special logic not implemented in mongoc_database_write_command_with_opts. For basic write operations use CRUD functions such as mongoc_collection_insert_one and the others described in the CRUD tutorial, or use the Bulk API.

EXAMPLE

See the example code for mongoc_client_read_command_with_opts.

AUTHOR
MongoDB, Inc

COPYRIGHT
2017, MongoDB, Inc