Most advanced, well documented and efficient REST client for Neo4j database, with 100% tests coverage. Fibers allows to give a new level experience to developers, no more callback-hell and blocking operations. Speed and low resources consumption is top priority of neo4j-fiber package.

100% tests coverage
Version for Meteor.js - https://atmospherejs.com/ostrio/neo4jdriver
This this library is heavily depends from Fibers, so you required to wrap all code into Fiber, see example
This package uses batch operations to perform queries. Batch operations lets you execute multiple API calls through a single HTTP call. This improves performance for large insert and update operations significantly
This package was tested and works like a charm with GrapheneDB
To find more about how to use Cypher read Neo4j cheat sheet

Installation

npm install --save neo4j-fiber

Demo Apps

Hosted at Heroku (GrapheneDB Add-on)
Check out it's source code

API:

Please see full API with examples in our wiki

Basic Usage Examples

Connect to Neo4j

const Neo4jDB = require('neo4j-fiber').Neo4jDB;
const db = new Neo4jDB('http://localhost:7474', {
  username: 'neo4j',
  password: '1234'
});

Set connection URL via environment variables

Set NEO4J_URL or GRAPHENEDB_URL to as connection URL to Neo4j Database

NEO4J_URL="http://neo4j:1234@localhost:7474" node index.js

If environment variable is set, no need to pass url argument into Neo4jDB constructor

const Neo4jDB = require('neo4j-fiber').Neo4jDB;
const db = new Neo4jDB();

Run simple query

const cursor = db.query('CREATE (n:City {props}) RETURN n', {
  props: {
    title: 'Ottawa',
    lat: 45.416667,
    long: -75.683333
  }
});

console.log(cursor.fetch());
// Returns array of nodes:
// [{
//   n: {
//     long: -75.683333,
//     lat: 45.416667,
//     title: "Ottawa",
//     id: 8421,
//     labels": ["City"],
//     metadata: {
//       id: 8421,
//       labels": ["City"]
//     }
//   }
// }]

// Iterate through results as plain objects:
cursor.forEach((node) => {
  console.log(node)
  // Returns node as Object:
  // {
  //   n: {
  //     long: -75.683333,
  //     lat: 45.416667,
  //     title: "Ottawa",
  //     id: 8421,
  //     labels": ["City"],
  //     metadata: {
  //       id: 8421,
  //       labels": ["City"]
  //     }
  //   }
  // }
});

// Iterate through cursor as `Neo4jNode` instances:
cursor.each((node) => {
  console.log(node.n.get());
  // {
  //   long: -75.683333,
  //   lat: 45.416667,
  //   title: "Ottawa",
  //   id: 8421,
  //   labels": ["City"],
  //   metadata: {
  //     id: 8421,
  //     labels": ["City"]
  //   }
  // }
});

Create node

const node  = db.nodes();
const node2 = db.nodes({property: 'value', property2: ['val', 'val2', 'val3']});

Get node by id

const node = db.nodes(123);

Delete node

node.delete();

Create relationship

const n1 = db.nodes();
const relationship = db.nodes().to(n1, "KNOWS", {property: 'value'});

Delete relationship

relationship.delete();

Cities example

// Create some data:
const cities = {};
cities['Zürich'] = db.nodes({
  title: 'Zürich',
  lat: 47.27,
  long: 8.31
}).label(['City']);

cities['Tokyo'] = db.nodes({
  title: 'Tokyo',
  lat: 35.40,
  long: 139.45
}).label(['City']);

cities['Athens'] = db.nodes({
  title: 'Athens',
  lat: 37.58,
  long: 23.43
}).label(['City']);

cities['Cape Town'] = db.nodes({
  title: 'Cape Town',
  lat: 33.55,
  long: 18.22
}).label(['City']);


// Add relationship between cities
// At this example we set distance
cities['Zürich'].to(cities['Tokyo'], "DISTANCE", {m: 9576670, km: 9576.67, mi: 5950.67});
cities['Tokyo'].to(cities['Zürich'], "DISTANCE", {m: 9576670, km: 9576.67, mi: 5950.67});

// Create route 1 (Zürich -> Athens -> Cape Town -> Tokyo)
cities['Zürich'].to(cities['Athens'], "ROUTE", {m: 1617270, km: 1617.27, mi: 1004.93, price: 50});
cities['Athens'].to(cities['Cape Town'], "ROUTE", {m: 8015080, km: 8015.08, mi: 4980.34, price: 500});
cities['Cape Town'].to(cities['Tokyo'], "ROUTE", {m: 9505550, km: 9505.55, mi: 5906.48, price: 850});

// Create route 2 (Zürich -> Cape Town -> Tokyo)
cities['Zürich'].to(cities['Cape Town'], "ROUTE", {m: 1617270, km: 1617.27, mi: 1004.93, price: 550});
cities['Cape Town'].to(cities['Tokyo'], "ROUTE", {m: 9576670, km: 9576.67, mi: 5950.67, price: 850});

// Create route 3 (Zürich -> Athens -> Tokyo)
cities['Zürich'].to(cities['Athens'], "ROUTE", {m: 1617270, km: 1617.27, mi: 1004.93, price: 50});
cities['Athens'].to(cities['Tokyo'], "ROUTE", {m: 9576670, km: 9576.67, mi: 5950.67, price: 850});

// Get Shortest Route (in km) between two Cities:
const shortest  = cities['Zürich'].path(cities['Tokyo'], "ROUTE", {cost_property: 'km', algorithm: 'dijkstra'})[0];
let shortestStr = 'Shortest from Zürich to Tokyo, via: ';
shortest.nodes.forEach((id) => {
  shortestStr += db.nodes(id).property('title') + ', ';
});

shortestStr += '| Distance: ' + shortest.weight + ' km';
console.info(shortestStr); // <-- Shortest from Zürich to Tokyo, via: Zürich, Cape Town, Tokyo, | Distance: 11122.82 km

// Get Cheapest Route (in notional currency) between two Cities:
const cheapest  = cities['Zürich'].path(cities['Tokyo'], "ROUTE", {cost_property: 'price', algorithm: 'dijkstra'})[0];
let cheapestStr = 'Cheapest from Zürich to Tokyo, via: ';
cheapest.nodes.forEach((id) => {
  cheapestStr += db.nodes(id).property('title') + ', ';
});

cheapestStr += '| Price: ' + cheapest.weight + ' nc';
console.info(cheapestStr); // <-- Cheapest from Zürich to Tokyo, via: Zürich, Athens, Tokyo, | Price: 900 nc

For more complex examples and docs, please see our wiki

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neo4j-fiber's Introduction

Installation

Demo Apps

API:

Basic Usage Examples

Connect to Neo4j

Set connection URL via environment variables

Run simple query

Create node

Get node by id

Delete node

Create relationship

Delete relationship

Cities example

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