MongoDBのインストールとチュートリアル

インストール

Homebrewでインストール

brew install mongodb
==> Downloading http://fastdl.mongodb.org/osx/mongodb-osx-x86_64-2.2.2.tgz
######################################################################## 100.0%
==> Caveats
To have launchd start mongodb at login:
    ln -sfv /usr/local/opt/mongodb/*.plist ~/Library/LaunchAgents
Then to load mongodb now:
    launchctl load ~/Library/LaunchAgents/homebrew.mxcl.mongodb.plist
Or, if you don't want/need launchctl, you can just run:
    mongod
/usr/local/Cellar/mongodb/2.2.2-x86_64: 20 files, 170M, built in 98 seconds

上にあるようにログイン時に起動してロードするには

ln -sfv /usr/local/opt/mongodb/*.plist ~/Library/LaunchAgents
launchctl load ~/Library/LaunchAgents/homebrew.mxcl.mongodb.plist

起動

mongod

接続

mongo

チュートリアル

> use mydb
switched to db mydb
> db
mydb
> j = {name: 'mongo'};
{ "name" : "mongo" }
> k = {x: 3}
{ "x" : 3 }
> db.things.insert(j)
> db.things.insert(k)
> show collections
system.indexes
things
> db.things.find()
{ "_id" : ObjectId("50caeb1fdab5ce4e84a41f78"), "name" : "mongo" }
{ "_id" : ObjectId("50caeb29dab5ce4e84a41f79"), "x" : 3 }

ループで挿入

> for (var i = 1; i <= 20; i++) db.things.insert({x:4, j:i})
> db.things.find()
{ "_id" : ObjectId("50caeb1fdab5ce4e84a41f78"), "name" : "mongo" }
{ "_id" : ObjectId("50caeb29dab5ce4e84a41f79"), "x" : 3 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7a"), "x" : 4, "j" : 1 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7b"), "x" : 4, "j" : 2 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7c"), "x" : 4, "j" : 3 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7d"), "x" : 4, "j" : 4 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7e"), "x" : 4, "j" : 5 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7f"), "x" : 4, "j" : 6 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f80"), "x" : 4, "j" : 7 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f81"), "x" : 4, "j" : 8 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f82"), "x" : 4, "j" : 9 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f83"), "x" : 4, "j" : 10 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f84"), "x" : 4, "j" : 11 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f85"), "x" : 4, "j" : 12 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f86"), "x" : 4, "j" : 13 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f87"), "x" : 4, "j" : 14 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f88"), "x" : 4, "j" : 15 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f89"), "x" : 4, "j" : 16 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8a"), "x" : 4, "j" : 17 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8b"), "x" : 4, "j" : 18 }
Type "it" for more
> it
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8c"), "x" : 4, "j" : 19 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8d"), "x" : 4, "j" : 20 }

カーソル操作

> var c = db.things.find()
> while (c.hasNext()) printjson(c.next())
{ "_id" : ObjectId("50caeb1fdab5ce4e84a41f78"), "name" : "mongo" }
{ "_id" : ObjectId("50caeb29dab5ce4e84a41f79"), "x" : 3 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7a"), "x" : 4, "j" : 1 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7b"), "x" : 4, "j" : 2 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7c"), "x" : 4, "j" : 3 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7d"), "x" : 4, "j" : 4 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7e"), "x" : 4, "j" : 5 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7f"), "x" : 4, "j" : 6 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f80"), "x" : 4, "j" : 7 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f81"), "x" : 4, "j" : 8 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f82"), "x" : 4, "j" : 9 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f83"), "x" : 4, "j" : 10 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f84"), "x" : 4, "j" : 11 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f85"), "x" : 4, "j" : 12 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f86"), "x" : 4, "j" : 13 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f87"), "x" : 4, "j" : 14 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f88"), "x" : 4, "j" : 15 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f89"), "x" : 4, "j" : 16 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8a"), "x" : 4, "j" : 17 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8b"), "x" : 4, "j" : 18 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8c"), "x" : 4, "j" : 19 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8d"), "x" : 4, "j" : 20 }

カーソルで配列の操作

> var c = db.things.find()
> printjson(c[4])
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7c"), "x" : 4, "j" : 3 }
> c.toArray()
[
 {
  "_id" : ObjectId("50caeb1fdab5ce4e84a41f78"),
  "name" : "mongo"
 },
 {
  "_id" : ObjectId("50caeb29dab5ce4e84a41f79"),
  "x" : 3
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f7a"),
  "x" : 4,
  "j" : 1
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f7b"),
  "x" : 4,
  "j" : 2
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f7c"),
  "x" : 4,
  "j" : 3
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f7d"),
  "x" : 4,
  "j" : 4
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f7e"),
  "x" : 4,
  "j" : 5
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f7f"),
  "x" : 4,
  "j" : 6
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f80"),
  "x" : 4,
  "j" : 7
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f81"),
  "x" : 4,
  "j" : 8
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f82"),
  "x" : 4,
  "j" : 9
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f83"),
  "x" : 4,
  "j" : 10
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f84"),
  "x" : 4,
  "j" : 11
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f85"),
  "x" : 4,
  "j" : 12
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f86"),
  "x" : 4,
  "j" : 13
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f87"),
  "x" : 4,
  "j" : 14
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f88"),
  "x" : 4,
  "j" : 15
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f89"),
  "x" : 4,
  "j" : 16
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f8a"),
  "x" : 4,
  "j" : 17
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f8b"),
  "x" : 4,
  "j" : 18
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f8c"),
  "x" : 4,
  "j" : 19
 },
 {
  "_id" : ObjectId("50caeee0dab5ce4e84a41f8d"),
  "x" : 4,
  "j" : 20
 }
]

クエリ

> db.things.find({name : "mongo"})
{ "_id" : ObjectId("50caeb1fdab5ce4e84a41f78"), "name" : "mongo" }
> db.things.find({x : 4}, {j : true})
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7a"), "j" : 1 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7b"), "j" : 2 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7c"), "j" : 3 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7d"), "j" : 4 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7e"), "j" : 5 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7f"), "j" : 6 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f80"), "j" : 7 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f81"), "j" : 8 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f82"), "j" : 9 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f83"), "j" : 10 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f84"), "j" : 11 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f85"), "j" : 12 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f86"), "j" : 13 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f87"), "j" : 14 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f88"), "j" : 15 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f89"), "j" : 16 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8a"), "j" : 17 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8b"), "j" : 18 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8c"), "j" : 19 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f8d"), "j" : 20 }

数の指定

> db.things.findOne()
{ "_id" : ObjectId("50caeb1fdab5ce4e84a41f78"), "name" : "mongo" }
> db.things.find().limit(3)
{ "_id" : ObjectId("50caeb1fdab5ce4e84a41f78"), "name" : "mongo" }
{ "_id" : ObjectId("50caeb29dab5ce4e84a41f79"), "x" : 3 }
{ "_id" : ObjectId("50caeee0dab5ce4e84a41f7a"), "x" : 4, "j" : 1 }

参考になりそうな

• Getting Started with the MongoDB JavaScript Shell — MongoDB Manual http://docs.mongodb.org/manual/tutorial/getting-started/
• MongoDBの薄い本(The Little MongoDB Book) - cuspy diary http://www.cuspy.org/diary/2012-04-17