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.TH "MONGOC_FIND_AND_MODIFY_OPTS_APPEND" "3" "May 07, 2024" "1.27.1" "libmongoc"
.SH SYNOPSIS
.INDENT 0.0
.INDENT 3.5
.sp
.EX
bool
mongoc_find_and_modify_opts_append (mongoc_find_and_modify_opts_t *opts,
                                    const bson_t *extra);
.EE
.UNINDENT
.UNINDENT
.SH PARAMETERS
.INDENT 0.0
.IP \(bu 2
\fBopts\fP: A \fI\%mongoc_find_and_modify_opts_t\fP\&.
.IP \(bu 2
\fBextra\fP: A \fI\%bson_t\fP with fields and values to append directly to \fI\%the findAndModify command\fP sent to the server.
.UNINDENT
.SH DESCRIPTION
.sp
Adds arbitrary options to \fI\%the findAndModify command\fP\&.
.sp
\fBextra\fP does not have to remain valid after calling this function.
.sp
\fBextra\fP may be NULL or a BSON document with additional command options:
.INDENT 0.0
.IP \(bu 2
\fBwriteConcern\fP: Construct a \fI\%mongoc_write_concern_t\fP and use \fI\%mongoc_write_concern_append()\fP to add the write concern to \fBopts\fP\&. See the example code for \fI\%mongoc_client_write_command_with_opts()\fP\&.
.IP \(bu 2
\fBsessionId\fP: First, construct a \fI\%mongoc_client_session_t\fP with \fI\%mongoc_client_start_session()\fP\&. You can begin a transaction with \fI\%mongoc_client_session_start_transaction()\fP, optionally with a \fI\%mongoc_transaction_opt_t\fP that overrides the options inherited from \fBcollection\fP, and use \fI\%mongoc_client_session_append()\fP to add the session to \fBopts\fP\&. See the example code for \fI\%mongoc_client_session_t\fP\&.
.IP \(bu 2
\fBhint\fP: A document or string that specifies the index to use to support the query predicate.
.IP \(bu 2
\fBlet\fP: A BSON document consisting of any number of parameter names, each followed by definitions of constants in the MQL Aggregate Expression language.
.IP \(bu 2
\fBcomment\fP: A \fI\%bson_value_t\fP specifying the comment to attach to this command. The comment will appear in log messages, profiler output, and currentOp output. Requires MongoDB 4.4 or later.
.UNINDENT
.SH RETURNS
.sp
Returns true on success. If any arguments are invalid, returns false and logs an error.
.SH APPENDING OPTIONS TO FINDANDMODIFY
.sp
opts.c
.INDENT 0.0
.INDENT 3.5
.sp
.EX
void
fam_opts (mongoc_collection_t *collection)
{
   mongoc_find_and_modify_opts_t *opts;
   bson_t reply;
   bson_t *update;
   bson_error_t error;
   bson_t query = BSON_INITIALIZER;
   mongoc_write_concern_t *wc;
   bson_t extra = BSON_INITIALIZER;
   bool success;


   /* Find Zlatan Ibrahimovic, the striker */
   BSON_APPEND_UTF8 (&query, \(dqfirstname\(dq, \(dqZlatan\(dq);
   BSON_APPEND_UTF8 (&query, \(dqlastname\(dq, \(dqIbrahimovic\(dq);
   BSON_APPEND_UTF8 (&query, \(dqprofession\(dq, \(dqFootball player\(dq);

   /* Bump his age */
   update = BCON_NEW (\(dq$inc\(dq, \(dq{\(dq, \(dqage\(dq, BCON_INT32 (1), \(dq}\(dq);

   opts = mongoc_find_and_modify_opts_new ();
   mongoc_find_and_modify_opts_set_update (opts, update);

   /* Abort if the operation takes too long. */
   mongoc_find_and_modify_opts_set_max_time_ms (opts, 100);

   /* Set write concern w: 2 */
   wc = mongoc_write_concern_new ();
   mongoc_write_concern_set_w (wc, 2);
   mongoc_write_concern_append (wc, &extra);

   /* Some future findAndModify option the driver doesn\(aqt support conveniently
    */
   BSON_APPEND_INT32 (&extra, \(dqfutureOption\(dq, 42);
   mongoc_find_and_modify_opts_append (opts, &extra);

   success = mongoc_collection_find_and_modify_with_opts (collection, &query, opts, &reply, &error);

   if (success) {
      char *str;

      str = bson_as_canonical_extended_json (&reply, NULL);
      printf (\(dq%s\en\(dq, str);
      bson_free (str);
   } else {
      fprintf (stderr, \(dqGot error: \e\(dq%s\e\(dq on line %d\en\(dq, error.message, __LINE__);
   }

   bson_destroy (&reply);
   bson_destroy (&extra);
   bson_destroy (update);
   bson_destroy (&query);
   mongoc_write_concern_destroy (wc);
   mongoc_find_and_modify_opts_destroy (opts);
}

.EE
.UNINDENT
.UNINDENT
.SH AUTHOR
MongoDB, Inc
.SH COPYRIGHT
2017-present, MongoDB, Inc
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