[MongoDB] Install MongoDB and try a simple example of mongodb_c_driver

MongoDB Installation
http://docs.mongodb.org/manual/tutorial/install-mongodb-on-debian-or-ubuntu-linux/
or
https://www.digitalocean.com/community/articles/how-to-install-mongodb-on-ubuntu-12-04
For instance in my environment:
  > sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10
  > sudo echo "deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen" | tee -a /etc/apt/sources.list.d/10gen.list
  > sudo apt-get -y update
  > sudo apt-get -y install mongodb-10gen

Try command on MongoDB
>mongo
MongoDB shell version: 2.2.2
connecting to: test

> show dbs
db    (empty)
local    (empty)
test    0.203125GB

 > use test
switched to db test

> show collections
foo
system.indexes

### Insert new data ###
> db.foo.save({a:1})
> doc = {
... "name" : "kristina",
... "contact info" : {
... "twitter" : "@kchodorow",
... "email" : "kristina@10gen.com"
... },
... "friends" : 400232,
... "pic" : BinData(...)
... "member since" : new Date()}
> db.foo.insert(doc)
> db.foo.save({a:2})
> db.foo.save({a:3})

### Find the data ###
> db.foo.find()
{ "_id" : ObjectId("50c592540770027c182d31b9"), "a" : 1 }
{ "_id" : ObjectId("50c59e030770027c182d31ba"), "name" : "kristina", "contact info" : { "twitter" : "@kchodorow", "email" : "kristina@10gen.com" }, "friends" : 400232, "member since" : ISODate("2012-12-10T08:30:50.389Z") }
{ "_id" : ObjectId("50c59e1f0770027c182d31bb"), "a" : 2 }
{ "_id" : ObjectId("50c59e220770027c182d31bc"), "a" : 3 }

> db.foo.findOne()
{ "_id" : ObjectId("50c592540770027c182d31b9"), "a" : 1 }
> db.foo.find({"a":1})
{ "_id" : ObjectId("50c592540770027c182d31b9"), "a" : 1 }
> db.foo.find({"name":"kristina"})
{ "_id" : ObjectId("50c59e030770027c182d31ba"), "name" : "kristina", "contact info" : { "twitter" : "@kchodorow", "email" : "kristina@10gen.com" }, "friends" : 400232, "member since" : ISODate("2012-12-10T08:30:50.389Z") }

Try a simple example of mongodb c driver
For more API info in details, please refer to this: http://api.mongodb.org/c/current/tutorial.htm
 

> gcc --std=c99 -I/usr/local/include -L/usr/local/lib -o mongodb_test mongodb_test.c -lmongoc
> ./mongodb_test
WARNING: mongo_connect() is deprecated, please use mongo_client()
MONGO_OK:connection succeeded
0


mongodb_test.c (source code)

#include <stdio.h> #include "mongo.h" int main() { mongo conn[1]; int status; status = mongo_connect( conn, "127.0.0.1", 27017 ); if( status != MONGO_OK ) { switch ( conn->err ) { case MONGO_CONN_SUCCESS: printf( "connection succeeded\n" ); break; //case MONGO_CONN_BAD_ARG: printf( "bad arguments\n" ); return 1; case MONGO_CONN_NO_SOCKET: printf( "no socket\n" ); return 1; case MONGO_CONN_FAIL: printf( "connection failed\n" ); return 1; case MONGO_CONN_NOT_MASTER: printf( "not master\n" ); return 1; } }else{ printf( "MONGO_OK:connection succeeded\n%d\n", status ); } mongo_destroy( conn ); return 0; }


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