mongoc_index_opt_t man page

mongoc_index_opt_t — #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;

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);
}

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

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2016‐11‐07 MongoDB C Driver