Communication with MongoDB in go language-using MgO

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Communication with MongoDB in go language-using MgO

Category: MongoDB 2013-08-28 15:52 1585 people read Comments (0) Collection Report

Recently wrote a game suit. It's all new. Go language +mongodb. Hey. about how MgO is used is not detailed. The official website is very clear. This piece is about how to use it.

Import the MgO library first.

Import (
"Labix.org/v2/mgo"
"Labix.org/v2/mgo/bson"
)

Declaring DB

var Db_dbs *mgo. Database

Statement Collection

var db_dbuserlist *mgo. Collection

Connecting to a database
Session, Err: = MgO. Dial ("127.0.0.1")

Select the DB for use

Db_dbs = Session. DB ("Jltx")

Select the corresponding collection

Db_dbuserlist = Db_dbs. C ("UserList")

That's it. You can get into the table operation. Read the MONGO authoritative guide. You just have to be a shell. Communicating with MgO to the DB will be simple.

Bson. m{} This thing is the star of the whole MgO dong. Used to turn the structure of Golang Bson.

For example, to find all the data in the info table

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2. INFs: = []dbinfo{}
4. Err = Db_dbinfo.find (&bson. m{}). All (&INFS)

The corresponding shell should be: Db.dbinfo.find () return all information

For example: First find all the collections where name is Enel

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2. //Find Users   
4. var u DBUser
6. US := []DBUSER{}  
8. ERR: = Db_dbuserlist.find (&bson. m{"Name": "Enel"}). All (&us)

The corresponding shell should be. Db.userlist.find ({"Name": "Enel0"}) returns the combination of hits

The above two examples are easy to see Bson. m{} and the shell's notation. Use good Bson. m{} will be able to use a good mongodb.

Here's an insert operation.

You can create a struct in go. Insert inside. Very simple.

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2. U = Dbuser{bson. Newobjectid (), Binf. Uuiduser, CSName, Cspassword, Uint8 (Cssex)}
4. Db_dbuserlist.insert (&u)