mongoc_find_and_modify_opts_set_flags -

SYNOPSIS  PARAMETERS  DESCRIPTION  RETURNS  SETTING FLAGS  AUTHOR  COPYRIGHT 

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SYNOPSIS

bool
mongoc_find_and_modify_opts_set_flags (
mongoc_find_and_modify_opts_t *opts,
const mongoc_find_and_modify_flags_t flags);

PARAMETERS

	•		opts: A mongoc_find_and_modify_opts_t.
	•		flags: .

DESCRIPTION

Adds one or more flags to the builder.

RETURNS

Returns Returns true if it successfully added the option to the builder, otherwise false and logs an error.

SETTING FLAGS

flags.c

void
fam_flags (mongoc_collection_t *collection)
{
mongoc_find_and_modify_opts_t *opts;
bson_t reply;
bson_error_t error;
bson_t query = BSON_INITIALIZER;
bson_t *update;
bool success;

/* Find Zlatan Ibrahimovic, the striker */
BSON_APPEND_UTF8 (&query, "firstname", "Zlatan");
BSON_APPEND_UTF8 (&query, "lastname", "Ibrahimovic");
BSON_APPEND_UTF8 (&query, "profession", "Football player");
BSON_APPEND_INT32 (&query, "age", 34);
BSON_APPEND_INT32 (&query, "goals", (16 + 35 + 23 + 57 + 16 + 14 + 28 + 84) + (1 + 6 + 62));

/* Add his football position */
update = BCON_NEW ("$set", "{", "position", BCON_UTF8 ("striker"), "}");

opts = mongoc_find_and_modify_opts_new ();

mongoc_find_and_modify_opts_set_update (opts, update);

/* Create the document if it didn't exist, and return the updated document */
mongoc_find_and_modify_opts_set_flags (opts, MONGOC_FIND_AND_MODIFY_UPSERT | MONGOC_FIND_AND_MODIFY_RETURN_NEW);

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 ("%s\n", str);
bson_free (str);
} else {
fprintf (stderr, "Got error: \"%s\" on line %d\n", error.message, __LINE__);
}

bson_destroy (&reply);
bson_destroy (update);
bson_destroy (&query);
mongoc_find_and_modify_opts_destroy (opts);
}

Outputs:

{
"lastErrorObject" : {
"updatedExisting" : false,
"n" : 1,
"upserted" : {"$oid" : "56562a99d13e6d86239c7b00"}
},
"value" : {
"_id" : {"$oid" : "56562a99d13e6d86239c7b00"},
"age" : 34,
"firstname" : "Zlatan",
"goals" : 342,
"lastname" : "Ibrahimovic",
"profession" : "Football player",
"position" : "striker"
},
"ok" : 1
}

AUTHOR

MongoDB, Inc

COPYRIGHT

2017-present, MongoDB, Inc

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