Poseidon Mongo

Poseidon Mongo provides a promise layer around the Node Native MongoDB driver with the help of the Poseidon library.

It has performance on par with the plain mongodb native library

Native MongoDB x 277 ops/sec ±2.42% (80 runs sampled)
Poseidon MongoDB x 271 ops/sec ±2.65% (71 runs sampled)
Fastest is Native MongoDB,Poseidon MongoDB

Install

To get started simply run

npm install poseidon-mongo

Introduction

Compare the example below to the original introduction for the Node MongoDB Native Driver.

Javascript

Mongo = require('../index.js');
Driver = new Mongo.Driver();
Database = Mongo.Database;
assert = require('assert');
Driver.configure('test', { hosts: ['127.0.0.1:27017'], database: 'test', options: { w: 1 } });

client = new Database(Driver, 'test');
client.collection('test_insert')
.then(function(collection){
  return collection.insert({a:2})
  .then(function(docs){
    return collection.count();
  }).then(function(count){
    assert(count, 1);
    return collection.find();
  }).then(function(cursor){
    return cursor.toArray();
  }).then(function(results){
    assert(results.length, 1);
    assert(results[0].a, 2);
  })
}).finally(function(){
  client.close();
}).done();

Coffeescript

It get even better with Jeremy Ashkenas' Coffescript.

Mongo = require '../index'
Driver = new Mongo.Driver()
{Database} = Mongo
assert = require 'assert'

Driver.configure('test', { hosts: ['127.0.0.1:27017'], database: 'test', options: { w: 1 } })

client = new Database(Driver, 'test')
client.collection('test_insert')
.then (collection) ->
  collection.insert({a:2})
  .then (docs) ->
    collection.count()
  .then (count) ->
    assert(count, 1);
    collection.find()
  .then (cursor) ->
    cursor.toArray();
  .then (results) ->
    assert(results.length, 1);
    assert(results[0].a, 2);
.finally () ->
  client.close()
.done()

API

The API for poseidon Mongo contains the complete API for the Node MongoDB Native driver's Db, Collection and Cursor classes.

Driver

The driver class provides for a easy management and configuration of databases through your entire application.

Driver.configure(connection, configuration)

Configures a connection using the given configuration. The possible configuration parameters are given below:

Parameter	Description
auth	An authorization string of the format <user>:<pass>. Eg: 'foo:bar'
database	The database name
hosts	An array of hosts to which you wish to connect
options	Any additional options. Find the full list of options here

Driver.openConnection(connection)

Open a previously configured connection and cache it for future reuse.

Driver.closeConnection(connection)

Close a connection and remove it from the cache.

Driver.reset()

Close all open connections and delete all configurations.

Database

The following functions are available. For detailed interface information check the Node MongoDB Native Documentation

• addUser
• authenticate
• close
• collection
• collectionNames
• collections
• collectionsInfo
• command
• createCollection
• createIndex
• cursorInfo
• db
• dereference
• dropCollection
• dropDatabase
• dropIndex
• ensureIndex
• eval
• indexInformation
• lastError
• logout
• previousErrors
• reIndex
• removeUser
• renameCollection
• resetErrorHistory
• stats

Collection

The following functions are available. For detailed interface information check the Node MongoDB Native Documentation

• aggregate
• count
• createIndex
• distinct
• drop
• dropAllIndexes
• dropIndex
• ensureIndex
• find
• findAndModify
• findAndRemove
• findOne
• geoHaystackSearch
• geoNear
• group
• indexes
• indexExists
• indexInformation
• insert
• isCapped
• mapReduce
• options
• reIndex
• remove
• rename
• save
• stats
• update

Cursor

The following functions are available. For detailed interface information check the Node MongoDB Native Documentation

• batchSize
• close
• count
• each
• explain
• isClosed
• limit
• nextObject
• rewind
• setReadPreference
• skip
• sort
• stream
• toArray

MongoDB Data Types

The following Data Types from the Node MongoDB Native driver are available:

• BSON
• ObjectID
• Binary
• Code
• Double
• Long
• Timestamp
• MaxKey
• Symbol

License

The MIT License

Copyright(c) 2013-2014, Playlyfe Technologies, developers@playlyfe.com, http://dev.playlyfe.com/