The document discusses using node.js with MongoDB. It includes examples of basic CRUD operations using the node.js driver and MongoDB native driver. It also discusses ORM libraries like Mongoose that provide an abstraction layer. The document contains code samples for performing inserts, updates, finds and counting documents using the native node.js driver and Mongoose.

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HTTP
WebSocket
Client (Flash) LB
node.js
3x3 Sharding
MongoDB
Content
SVN or git Distribution

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11. Mongo Tokyo 2011 - node.js + MongoDB
var entity = {
_id: ‘abc’,
name: ‘test’,
body: {
parts: {
face: 0, eye: 2, nose: 4, mouth: 2
},
colors: {
skin: 1, eye: 4, hair: 3
}
}
};
col.save(entity);
col.findOne({_id:‘abc’}, function(err, result) {
console.log(result.body.parts);
});
col.update({_id:‘abc’},
{‘$set’, {name: ‘modified’}}
);

12. Mongo Tokyo 2011 - node.js + MongoDB
https://github.com/orlandov/node-mongodb/
https://github.com/christkv/node-mongodb-native/

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var client = new Db('test', new Server("127.0.0.1", 27017, {}));
client.open(function(err, p_client) {
client.createCollection('test_insert',function(err, collection) {
client.collection('test_insert', function(err, collection) {
for(var i = 1; i < 1000; i++) {
collection.insert({c:1}, function(err, docs) {});
}
collection.insert({a:2}, function(err, docs) {
collection.insert({a:3}, function(err, docs) {
collection.count(function(err, count) {
test.assertEquals(1001, count);
collection.find(function(err, cursor) {
cursor.toArray(function(err, results) {
test.assertEquals(1001, results.length);
test.assertTrue(results[0] != null);
client.close();
});
});
});
});
});
});
});
});

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var db = new Database(‘127.0.0.1’, 3306, ‘test’);
db.open();
var item = db.collection(‘item’);
item
.begin()
.insert({_id:‘test’, name:‘abcdefg’})
.insert({_id:‘test2’, name:‘123456’, values:[0,1,2,3]);
.update({_id:‘test’}, {‘$set’: { name: ‘hijklmn’ })
.find({}).each(function(entity) {
console.log(entity.name);
})
.success(function() {
console.log(‘done’);
})
.failure(function(err) {
console.log(‘error’, err);
})
.end();

17. Mongo Tokyo 2011 - node.js + MongoDB
https://github.com/LearnBoost/mongoose

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var spec1 = {
name: ‘test’,
type: ‘text’,
label: ‘label-1’,
class: ‘number’,
min: 0, max: 100
};
var spec2 = {
name: ‘test2’,
type: ‘group’,
label: ‘group-1’,
fields: [spec3, spec4, spec5]
};
var formSpec = [
spec1, spec2
];
showForm(formSpec);

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{ "_id" : "plant_ichigo",
"name" : " ",
"type" : "plant",
"plant" : {
"tags" : [ "vegetable" ],
"time" : { "grow" : 10, "expire" : 60 },
"rewards" : [
! {
! ! "type" : "coin",
! ! "rate" : 1,
! ! "min" : 5,
! ! "max" : 20,
! ! "code" : ""
! },
! {
! ! "type" : "exp",
! ! "rate" : 1,
! ! "min" : 1,
! ! "max" : 2,
! ! "code" : ""
! },
! {
! ! "type" : "item",
! ! "rate" : 1,
! ! "min" : 1,
! ! "max" : 1,
! ! "code" : "material_ichigo"
! }
]}

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