Provided by: libmongoc-doc_1.15.0-1_all bug

NAME

       mongoc_client_read_write_command_with_opts - mongoc_client_read_write_command_with_opts()

SYNOPSIS

          bool
          mongoc_client_read_write_command_with_opts (
             mongoc_client_t *client,
             const char *db_name,
             const bson_t *command,
             const mongoc_read_prefs_t *read_prefs /* UNUSED */,
             const bson_t *opts,
             bson_t *reply,
             bson_error_t *error);

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

       Use  this  function  for  commands  that  both read and write, such as "mapReduce" with an
       output collection.

       Read and write  concern  and  collation  can  be  overridden  by  various  sources.  In  a
       transaction,  read  concern and write concern are prohibited in opts. The highest-priority
       sources for these options are listed first in the following table.  Read  preferences  are
       not applied. The write concern is omitted for MongoDB before 3.4.

                               ┌─────────────┬───────────────┬───────────┐
                               │Read Concern │ Write Concern │ Collation │
                               ├─────────────┼───────────────┼───────────┤
                               │optsoptsopts      │
                               ├─────────────┼───────────────┼───────────┤
                               │Transaction  │ Transaction   │           │
                               ├─────────────┼───────────────┼───────────┤
                               │clientclient        │           │
                               └─────────────┴───────────────┴───────────┘

       See the example for transactions and for the "distinct" command with opts.

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

       (The  mongoc_read_prefs_t  parameter  was  included  by  mistake  when  this  function was
       introduced in libmongoc 1.5. A command that writes must not obey a read preference.)

PARAMETERS

       · client: A mongoc_client_t.

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

       · command: A bson_t containing the command specification.

       · read_prefs: Ignored.

       · 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  client,  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.

EXAMPLE

       See the example code for mongoc_client_read_command_with_opts.

AUTHOR

       MongoDB, Inc

COPYRIGHT

       2017-present, MongoDB, Inc

1.15.0                                     Aug 13, 2MONGOC_CLIENT_READ_WRITE_COMMAND_WITH_OPTS(3)