C + + application development for SEQUOIADB 1

" Phone " " 13800138123 " " 13800138124 " ) )

Using SEQUOIADB to develop C + + applications requires the use of Bson objects, this article mainly on the bson of the operation of Things

1: Build a _id Bson object

Bson's C + + driver gives me a macro bson that makes it easy to build a Bson object, but there's a pit that doesn't build--id Bson objects

Bsonobj Obj=bson ("_id" <<bson ("$oid"<<"  xxx"));

Use this statement to create a Bson, when looking for, can not find data (error, forget). The right approach should be.

Bsonobjbuilder builder; OID  oid (inst_id);  
Bosonobj condition=builder.appendoid ("_id"//  StringData types can be replaced with string types and char*

2: Build a Bson, value is an array

Data format {"num": [33,44]}

Bsonarraybuilder  nums;  Bsonobjbuilder arr;nums<<<<arr.append ("num  ", Nums.arr ());

Note that above Bsonarraybuilder cannot use the Done method, which generates a map array

You can also use macros

" Phone " " 13800138123 " " 13800138124 " ) )

These classes and macros are all under namespace Bson.

C + + application development for SEQUOIADB 1