Gremlin-node-orientdb is a javascript wrapper around the Gremlin API using Rexster.

Rexster provides a RESTful shell to any Blueprints-complaint graph database. This HTTP web service provides: a set of standard low-level GET, POST, and DELETE methods, a flexible extension model which allows plug-in like development for external services (such as ad-hoc graph queries through Gremlin), and a browser-based interface called The Dog House.

A graph database hosted in the OrientDB can be configured in Rexster and then accessed using the standard RESTful interface powered by the Rexster web server.

You can get the latest stable release of Rexster from its Download Page. The latest stable release when this page was last updated was 2.5.0.

Or you can build a snapshot by executing the following Git and Maven commands:

$ git clone https://github.com/tinkerpop/rexster.git
$ cd rexster
$ mvn clean install

In order to configure Rexster to connect to your OrientDB graph, locate the rexster.xml in the Rexster directory and add the following snippet of code:

<rexster>
  ...
  <graphs>
    ...
    <graph>
      <graph-enabled>true</graph-enabled>
      <graph-name>orientdbsample</graph-name>
      <graph-type>com.tinkerpop.rexster.OrientGraphConfiguration</graph-type>
      <graph-location>{{ DATABASE'S LOCATION }}</graph-location>
      <extensions>
        <allows>
           <allow>tp:gremlin</allow>
        </allows>
      </extensions>
      <properties>
        <username>{{ USERNAME }}</username>
        <password>{{ PASSWORD }}</password>
      </properties>
    </graph>
  ...
  </graphs>
</rexster>

For instance, for local database, replace {{ DATABASE'S LOCATION }} by remote:localhost/{{ DATABASE'S NAME }}.

Locate the BIN folder in the Rexster directory, and enter this command line :

$ ./rexster.sh -s -c ../config/rexster.xml 

$ git clone [email protected]:atefzed/gremlin-node-orientdb.git
$ cd gremlin-node-orientdb && npm install

To run your app, you need to run these step by step :

1. Orientdb server.
2. Rexster server.
3. Node.js application.

var orientAdapter = require('sails-orientdb');

require('{{ PATH TO GRAPH.JS }}')(orientAdapter);

module.exports = {
  	// Setup Adapters
  	// Creates named adapters that have have been required
	adapters: {
	   'default': orientAdapter,
	   orient: orientAdapter,
	},

	// Build Connections Config
	// Setup connections using the named adapter configs
	connections: {
	   myLocalOrient: {
		   adapter: 'orient',
		   host: 'localhost',
		   port: {{ PORT }},
		   user: '{{ USERNAME }}',
		   password: '{{ PASSWORD }}',
		   database: "{{ DATABASE'S NAME }}"
	   }
	},

	defaults: {
	   migrate: 'safe'
	}
}

Simple request :

  var o = app.models.{{ COLLECTION NAME }};
  o.inV('id', '#12:0', function(err, resp) {
    if (err) throw err;
    console.log(resp);
  });

Nested request :

  var o = app.models.{{ COLLECTION NAME }};
  o.inV('id', '#12:0', function(error, resp) {
    if (error) throw error;
    o.dedup(resp, function(e, r){
      if (e) throw e;
      o.count(r, function(err, c){
        if (err) throw err;
        console.log(c);
      });
    });
  });

var Graph = require('{{ PATH TO GRAPH.JS }}');
var g = new Graph();
g.filter('', '{{ COLLECTION NAME }}', {
  'lastname': 'test',
  'familySituation': 'single'
}, function(err, res) {
    if (err) throw err;
    console.log(res);
});

All tests are written with mocha and should be run with npm:

  $ npm test

Contributions to the project are most welcome, so feel free to fork and improve.