c statement equivalent to mongo query db.users.find({age {$gt: 3}}, {})

Question

I have searched for the usage of conditional statements(<,>,<=,etc..,) in C API documentation in the link http://api.mongodb.org/c/current/. But I am unable to find it.

Example:

The mongo shell query is

db.users.find({age: {$gt: 3}}, {})

I want the equivalent C statement for the above.

Answer 1

For example, query:

find({ age : { $gt : 5, $lt : 12}})

would be written like this:

bson_init(&b);
bson_append_start_object(&b,"age");
bson_append_int(&b,"$gt",5);
bson_append_int(&b,"$lt",12);
bson_append_finish_object(&b);
bson_finish(&b);