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## About [<img src="https://secure.travis-ci.org/1602/jugglingdb.png" />](http://travis-ci.org/#!/1602/jugglingdb)
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# Loopback Data
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Loopback Data is a data source abstraction, providing
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[JugglingDB(3)](http://jugglingdb.co) is cross-db ORM for nodejs, providing
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**common interfaces** to access and manipulate many sources for data.
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**common interface** to access most popular database formats. Currently
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supported are: mysql, sqlite3, postgres, couchdb, mongodb, redis, neo4j and
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js-memory-storage (yep, self-written engine for test-usage only). You can add
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your favorite database adapter, checkout one of the existing adapters to learn
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how, it's super-easy, I guarantee.
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Jugglingdb also works on client-side (using WebService and Memory adapters),
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which allows to write rich client-side apps talking to server using JSON API.
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## Installation
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## Installation
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npm install jugglingdb
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slnode install loopback-data
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plus you should install appropriated adapter, for example for redis:
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Also install the appropriated connector, for example for mongodb:
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npm install jugglingdb-redis
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npm install loopback-connector-mongodb
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check following list of available adapters
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check following list of available connectors
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## JugglingDB adapters
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## Loopback Data Connectors
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<table>
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<table>
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<thead>
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<thead>
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<tr>
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<tr>
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<th>Database type</th>
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<th>Type</th>
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<th>Package name</th>
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<th>Package name</th>
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<th>Maintainer</th>
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<th>Build status</th>
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</tr>
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</tr>
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</thead>
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</thead>
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<tbody>
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<tbody>
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<!-- Firebird -->
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<tr>
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<td><a href="http://firebirdsql.org"><img src="http://firebirdsql.org/favicon.ico" alt="Firebird"/></a> Firebird</td>
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<td><a href="http://github.com/hgourvest/jugglingdb-firebird">jugglingdb-firebird</a></td>
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<td><a href="http://github.com/hgourvest">Henri Gourvest</a></td>
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<td></td>
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</tr>
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<!-- MongoDB -->
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<!-- MongoDB -->
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<tr>
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<tr>
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<td><a href="http://www.mongodb.org"><img src="http://mongodb.ru/favicon.ico" alt="MongoDB" /></a> MongoDB</td>
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<td><a href="http://www.mongodb.org"><img src="http://mongodb.ru/favicon.ico" alt="MongoDB" /></a> MongoDB</td>
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<td><a href="https://github.com/jugglingdb/mongodb-adapter">jugglingdb/mongodb-adapter</a></td>
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<td><a href="https://github.com/strongloop/loopback-connector-mongodb">loopback-connector-mongodb</a></td>
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<td><a href="https://github.com/anatoliychakkaev">Anatoliy Chakkaev</a></td>
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<td><a href="https://travis-ci.org/jugglingdb/mongodb-adapter"><img src="https://travis-ci.org/jugglingdb/mongodb-adapter.png?branch=master" alt="Build Status" /></a></td>
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</tr>
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<!-- MySQL -->
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<tr>
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<td><a href="http://www.mysql.com/"><img src="https://github.com/1602/jugglingdb/raw/master/media/mysql.ico" style="vertical-align:middle"" alt="MySQL" /></a> MySQL</td>
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<td><a href="https://github.com/jugglingdb/mysql-adapter">jugglingdb/mysql</a></td>
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<td><a href="https://github.com/dgsan">dgsan</a></td>
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<td><a href="https://travis-ci.org/jugglingdb/mysql-adapter"><img src="https://travis-ci.org/jugglingdb/mysql-adapter.png?branch=master" alt="Build Status" /></a></td>
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</tr>
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<!-- CouchDB / nano -->
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<tr>
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<td><a href="http://couchdb.apache.org/"><img width="16" src="http://couchdb.apache.org/favicon.ico" style="vertical-align:middle"" alt="CouchDB" /></a> CouchDB / nano</td>
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<td><a href="https://github.com/jugglingdb/nano-adapter">jugglingdb/nano-adapter</a></td>
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<td><a href="https://github.com/nrw">Nicholas Westlake</a></td>
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<td><a href="https://travis-ci.org/jugglingdb/nano-adapter"><img src="https://travis-ci.org/jugglingdb/nano-adapter.png?branch=master" alt="Build Status" /></a></td>
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</tr>
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<!-- PostgreSQL -->
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<tr>
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<td><a href="http://www.postgresql.org/"><img src="http://www.postgresql.org/favicon.ico" style="vertical-align:middle"" alt="PostgreSQL" /></a> PostgreSQL</td>
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<td><a href="https://github.com/jugglingdb/postgres-adapter">jugglingdb/postgres-adapter</a></td>
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<td><a href="https://github.com/anatoliychakkaev">Anatoliy Chakkaev</a></td>
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<td><a href="https://travis-ci.org/jugglingdb/postgres-adapter"><img src="https://travis-ci.org/jugglingdb/postgres-adapter.png?branch=master" alt="Build Status" /></a></td>
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</tr>
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<!-- Redis -->
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<tr>
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<td><a href="http://redis.io/"><img src="http://redis.io/images/favicon.png" alt="Redis" /></a> Redis</td>
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<td><a href="https://github.com/jugglingdb/redis-adapter">jugglingdb-redis</a></td>
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<td><a href="https://github.com/anatoliychakkaev">Anatoliy Chakkaev</a></td>
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<td><a href="https://travis-ci.org/jugglingdb/redis-adapter"><img src="https://travis-ci.org/jugglingdb/redis-adapter.png?branch=master" alt="Build Status" /></a></td>
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</tr>
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<!-- SQLite -->
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<tr>
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<td><a href="http://www.sqlite.org/"><img width="16" src="https://github.com/1602/jugglingdb/raw/master/media/sqlite.png" style="vertical-align:middle"" alt="SQLite" /></a> SQLite</td>
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<td><a href="https://github.com/jugglingdb/sqlite3-adapter">jugglingdb/sqlite3-adapter</a></td>
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<td><a href="https://github.com/anatoliychakkaev">Anatoliy Chakkaev</a></td>
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<td><a href="https://travis-ci.org/jugglingdb/sqlite3-adapter"><img src="https://travis-ci.org/jugglingdb/sqlite3-adapter.png?branch=master" alt="Build Status" /></a></td>
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</tr>
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<tr>
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<td>WebService</td>
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<td>built-in</td>
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<td><a href="https://github.com/anatoliychakkaev">Anatoliy Chakkaev</a></td>
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<td>n/a</td>
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</tr>
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<tr>
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<td>Memory (bogus)</td>
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<td>built-in</td>
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<td><a href="https://github.com/anatoliychakkaev">Anatoliy Chakkaev</a></td>
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<td>n/a</td>
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</tr>
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<tr>
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<td>Neo4j</td>
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<td>built-in <i>TODO: move</i></td>
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<td><a href="https://github.com/anatoliychakkaev"><strike>Anatoliy Chakkaev</strike></a> <u>/!\</u> Looking for
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maintainer</td>
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<td>n/a</td>
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</tr>
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</tr>
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</tbody>
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</tbody>
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</table>
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</table>
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## Participation
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- Check status of project on trello board: https://trello.com/board/jugglingdb/4f0a0b1e27d3103c64288388
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- Make sure all tests pass (`npm test` command)
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- Feel free to vote and comment on cards (tickets/issues), if you want to join team -- send me a message with your email.
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If you want to create your own jugglingdb adapter, you should publish your
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adapter package with name `jugglingdb-ADAPTERNAME`. Creating adapter is simple,
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check [jugglingdb/redis-adapter](https://github.com/jugglingdb/redis-adapter) for example. JugglingDB core
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exports common tests each adapter should pass, you could create your adapter in
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TDD style, check that adapter pass all tests defined in `test/common_test.js`.
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## Usage
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```javascript
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var Schema = require('jugglingdb').Schema;
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var schema = new Schema('redis', {port: 6379}); //port number depends on your configuration
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// define models
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var Post = schema.define('Post', {
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title: { type: String, length: 255 },
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content: { type: Schema.Text },
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date: { type: Date, default: function () { return new Date;} },
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timestamp: { type: Number, default: Date.now },
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published: { type: Boolean, default: false, index: true }
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});
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// simplier way to describe model
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var User = schema.define('User', {
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name: String,
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bio: Schema.Text,
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approved: Boolean,
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joinedAt: Date,
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age: Number
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}, {
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restPath: '/users' // tell WebService adapter which path use as API endpoint
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});
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var Group = schema.define('Group', {name: String});
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// define any custom method
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User.prototype.getNameAndAge = function () {
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return this.name + ', ' + this.age;
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};
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// models also accessible in schema:
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schema.models.User;
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schema.models.Post;
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```
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SEE [schema(3)](http://jugglingdb.co/schema.3.html) for details schema usage.
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```javascript
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// setup relationships
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User.hasMany(Post, {as: 'posts', foreignKey: 'userId'});
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// creates instance methods:
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// user.posts(conds)
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// user.posts.build(data) // like new Post({userId: user.id});
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// user.posts.create(data) // build and save
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Post.belongsTo(User, {as: 'author', foreignKey: 'userId'});
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// creates instance methods:
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// post.author(callback) -- getter when called with function
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// post.author() -- sync getter when called without params
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// post.author(user) -- setter when called with object
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User.hasAndBelongsToMany('groups');
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// user.groups(callback) - get groups of user
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// user.groups.create(data, callback) - create new group and connect with user
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// user.groups.add(group, callback) - connect existing group with user
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// user.groups.remove(group, callback) - remove connection between group and user
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schema.automigrate(); // required only for mysql NOTE: it will drop User and Post tables
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// work with models:
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var user = new User;
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user.save(function (err) {
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var post = user.posts.build({title: 'Hello world'});
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post.save(console.log);
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});
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// or just call it as function (with the same result):
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var user = User();
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user.save(...);
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// Common API methods
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// just instantiate model
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new Post
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// save model (of course async)
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Post.create(cb);
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// all posts
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Post.all(cb)
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// all posts by user
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Post.all({where: {userId: user.id}, order: 'id', limit: 10, skip: 20});
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// the same as prev
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user.posts(cb)
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// get one latest post
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Post.findOne({where: {published: true}, order: 'date DESC'}, cb);
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// same as new Post({userId: user.id});
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user.posts.build
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// save as Post.create({userId: user.id}, cb);
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user.posts.create(cb)
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// find instance by id
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User.find(1, cb)
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// count instances
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User.count([conditions, ]cb)
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// destroy instance
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user.destroy(cb);
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// destroy all instances
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User.destroyAll(cb);
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```
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SEE [model(3)](http://jugglingdb.co/model.3.html) for more information about
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jugglingdb Model API. Or `man jugglingdb-model` in terminal.
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```javascript
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// Setup validations
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User.validatesPresenceOf('name', 'email')
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User.validatesLengthOf('password', {min: 5, message: {min: 'Password is too short'}});
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User.validatesInclusionOf('gender', {in: ['male', 'female']});
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User.validatesExclusionOf('domain', {in: ['www', 'billing', 'admin']});
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User.validatesNumericalityOf('age', {int: true});
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User.validatesUniquenessOf('email', {message: 'email is not unique'});
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user.isValid(function (valid) {
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if (!valid) {
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user.errors // hash of errors {attr: [errmessage, errmessage, ...], attr: ...}
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}
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})
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```
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SEE ALSO [jugglingdb-validations(3)](http://jugglingdb.co/validations.3.html) or
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`man jugglingdb-validations` in terminal. Validation tests: ./test/validations.test.js
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## Hooks
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The following hooks supported:
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- afterInitialize
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- beforeCreate
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- afterCreate
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- beforeSave
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- afterSave
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- beforeUpdate
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- afterUpdate
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- beforeDestroy
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- afterDestroy
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- beforeValidate
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- afterValidate
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Each callback is class method of the model, it should accept single argument: `next`, this is callback which
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should be called after end of the hook. Except `afterInitialize` because this method is syncronous (called after `new Model`).
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## Object lifecycle:
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```javascript
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var user = new User;
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// afterInitialize
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user.save(callback); // If Model.id isn't set, save will invoke Model.create() instead
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// beforeValidate
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// afterValidate
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// beforeSave
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// beforeUpdate
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// afterUpdate
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// afterSave
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// callback
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user.updateAttribute('email', 'email@example.com', callback);
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// beforeValidate
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// afterValidate
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// beforeSave
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// beforeUpdate
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// afterUpdate
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// afterSave
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// callback
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user.destroy(callback);
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// beforeDestroy
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// afterDestroy
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// callback
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User.create(data, callback);
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// beforeValidate
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// afterValidate
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// beforeCreate
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// beforeSave
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// afterSave
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// afterCreate
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// callback
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```
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SEE [jugglingdb-hooks](http://jugglingdb.co/hooks.3.html) or type this command
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in your fav terminal: `man jugglingdb-hooks`. Also check tests for usage
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examples: ./test/hooks.test.js
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## Your own database adapter
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To use custom adapter, pass it's package name as first argument to `Schema` constructor:
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var mySchema = new Schema('mycouch', {host:.., port:...});
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In that case your adapter should be named as 'jugglingdb-mycouch' npm package.
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## Testing [outdated]
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TODO: upd this section
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Core of jugglingdb tests only basic features (database-agnostic) like
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validations, hooks and runs db-specific tests using memory storage. It also
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exports complete bucket of tests for external running. Each adapter should run
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this bucket (example from `jugglingdb-redis`):
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var jdb = require('jugglingdb'),
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Schema = jdb.Schema,
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test = jdb.test;
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|
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var schema = new Schema(__dirname + '/..', {host: 'localhost', database: 1});
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test(module.exports, schema);
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Each adapter could add specific tests to standart bucket:
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test.it('should do something special', function (test) {
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test.done();
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});
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Or it could tell core to skip some test from bucket:
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test.skip('name of test case');
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|
||||||
To run tests use this command:
|
|
||||||
|
|
||||||
npm test
|
|
||||||
|
|
||||||
Before running make sure you've installed package (`npm install`) and if you
|
|
||||||
running some specific adapter tests, ensure you've configured database
|
|
||||||
correctly (host, port, username, password).
|
|
||||||
|
|
||||||
## Contributing
|
|
||||||
|
|
||||||
If you have found a bug please try to write unit test before reporting. Before
|
|
||||||
submit pull request make sure all tests still passed. Check
|
|
||||||
[roadmap](http://jugglingdb.co/roadmap.3.html), github issues if you want to
|
|
||||||
help. Contribution to docs highly appreciated. Contents of man pages and
|
|
||||||
http://jugglingdb.co generated from md files stored in this repo at ./docs repo
|
|
||||||
|
|
||||||
## MIT License
|
|
||||||
|
|
||||||
Copyright (C) 2011 by Anatoliy Chakkaev <mail [åt] anatoliy [døt] in>
|
|
||||||
|
|
||||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
||||||
of this software and associated documentation files (the "Software"), to deal
|
|
||||||
in the Software without restriction, including without limitation the rights
|
|
||||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
||||||
copies of the Software, and to permit persons to whom the Software is
|
|
||||||
furnished to do so, subject to the following conditions:
|
|
||||||
|
|
||||||
The above copyright notice and this permission notice shall be included in
|
|
||||||
all copies or substantial portions of the Software.
|
|
||||||
|
|
||||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
||||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
||||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
||||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
||||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
||||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
||||||
THE SOFTWARE.
|
|
||||||
|
|
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Reference in New Issue