NAME

       mongoc_find_and_modify_opts_set_flags() - Adds one or more flags to the builder.

SYNOPSIS

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

       NOTE
              New in mongoc 1.3.0

PARAMETERS

       opts   A mongoc_find_and_modify_opts_t \&.

       flags  \&.

DESCRIPTION

       Adds one or more flags to the builder.

       MONGOC_FIND_AND_MODIFY_NONE
              Default. Doesn't add anything to the builder.

       MONGOC_FIND_AND_MODIFY_REMOVE
              Will instruct find_and_modify to remove the matching document.

       MONGOC_FIND_AND_MODIFY_UPSERT
              Update the matching document or, if no document matches, insert the document.

       MONGOC_FIND_AND_MODIFY_RETURN_NEW
              Return the resulting document.

RETURNS

       Returns true if it successfully added the option to the builder.

SETTING FLAGS

       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_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
       }

COLOPHON

       This    page   is   part   of   MongoDB   C   Driver.    Please   report   any   bugs   at
       https://jira.mongodb.org/browse/CDRIVER.