MONGOC_DATABASE_COMMAND_WITH_OPTS - Online Linux Manual PageSection : 3
Updated : Feb 04, 2021
Source : 1.17.4
Note : libmongoc
NAMEmongoc_database_command_with_opts − mongoc_database_command_with_opts()
SYNOPSIS bool
mongoc_database_command_with_opts (
mongoc_database_t *database,
const bson_t *command,
const mongoc_read_prefs_t *read_prefs,
const bson_t *opts,
bson_t *reply,
bson_error_t *error);
Execute a command on the server, interpreting opts according to the MongoDB server version. To send a raw command to the server without any of this logic, use mongoc_client_command_simple. Read preferences, read and write concern, and collation can be overridden by various sources. The highest−priority sources for these options are listed first: Read Preferences Read Concern Write Concern Collation read_prefs opts opts opts Transaction Transaction Transaction In a transaction, read concern and write concern are prohibited in opts and the read preference must be primary or NULL. See the example for transactions and for the "distinct" command with opts. reply is always initialized, and must be freed with bson_destroy(). This function is not considered a retryable read operation.
PARAMETERS • database: A mongoc_database_t. • command: A bson_t containing the command specification. • read_prefs: An optional mongoc_read_prefs_t. • 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: • 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. Read concern requires MongoDB 3.2 or later, otherwise an error is returned. • 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: First, construct a mongoc_client_session_t with mongoc_client_start_session. You can begin a transaction with mongoc_client_session_start_transaction, optionally with a mongoc_transaction_opt_t that overrides the options inherited from database, 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.
ERRORSErrors are propagated via the error parameter.
RETURNSReturns true if successful. Returns false and sets error if there are invalid arguments or a server or network error. The reply is not parsed for a write concern timeout or write concern error.
EXAMPLESee the example code for mongoc_client_read_command_with_opts.
AUTHORMongoDB, Inc
COPYRIGHT2017-present, MongoDB, Inc 0
Johanes Gumabo
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