mongoc_index_opt_t man page

mongoc_index_opt_t — mongoc_index_opt_t

Synopsis

#include <mongoc.h>

typedef struct {
   bool is_initialized;
   bool background;
   bool unique;
   const char *name;
   bool drop_dups;
   bool sparse;
   int32_t expire_after_seconds;
   int32_t v;
   const bson_t *weights;
   const char *default_language;
   const char *language_override;
   mongoc_index_opt_geo_t *geo_options;
   mongoc_index_opt_storage_t *storage_options;
   const bson_t *partial_filter_expression;
   const bson_t *collation;
   void *padding[4];
} mongoc_index_opt_t;

Description

This structure contains the options that may be used for tuning a specific index.

See the createIndexes documentations in the MongoDB manual for descriptions of individual options.

NOTE:

dropDups is deprecated as of MongoDB version 3.0.0.  This option is silently ignored by the server and unique index builds using this option will fail if a duplicate value is detected.

Example

{
   bson_t keys;
   bson_error_t error;
   mongoc_index_opt_t opt;
   mongoc_index_opt_geo_t geo_opt;

   mongoc_index_opt_init (&opt);
   mongoc_index_opt_geo_init (&geo_opt);

   bson_init (&keys);
   BSON_APPEND_UTF8 (&keys, "location", "2d");

   geo_opt.twod_location_min = -123;
   geo_opt.twod_location_max = +123;
   geo_opt.twod_bits_precision = 30;
   opt.geo_options = &geo_opt;

   collection = mongoc_client_get_collection (client, "test", "geo_test");
   if (mongoc_collection_create_index (collection, &keys, &opt, &error)) {
      /* Successfully created the geo index */
   }
   bson_destroy (&keys);
   mongoc_collection_destroy (&collection);
}

See Also

mongoc_index_opt_geo_t

mongoc_index_opt_wt_t

Author

MongoDB, Inc

Info

Mar 28, 2017 1.6.2 MongoDB C Driver