The first alpha of the official JavaScript driver arangojs‘ upcoming major release is now available on npm.

Version 4 streamlines the driver’s API by removing unnecessary server roundtrips to obtain references to collections and graphs that already exist:

Before:

var db = require('arangojs')(); db.collection('users') .then(function(collection) { return collection.import(allTheUsers) }) .then(function() { return db.collection('blogs') }) .then(function(collection) { return collection.import(allTheBlogs); }) .then(function() { return db.collection('articles') }) .then(function(collection) {..

ArangoJS, the official ArangoDB JavaScript client, has been updated to version 3.7.0. The new release features significant performance improvements in Node.js and io.js. The dependency on the third-party request module has been replaced with a thin wrapper around node’s own http module, bringing a 3-4x performance improvement for consecutive requests by maintaining a connection pool.

The new Javascript driver no longer imposes any promises implementation. It follows the standard callback pattern with a callback using err and res.

I wanted to give the new driver a try. A github crawler seemed like a good side-project, especially because the node-github driver follows the same conventions as the Javascript driver.

There are a lot of promise libraries out there. The most popular one – according to NPM – was promises. It should be possible to use any implementation. Therefore I used this one.

The following source code can be found on github.

After defining a graph and filling it with some vertices and edges (see part 1), the time has come to retrieve information out of the graph.

Please take a look at the defined graph operations of ArangoDB. These will be the base for our next examples. (Yes, there may be other ways to get the results, this post does not claim completeness!)

We will start with some easy stuff and then smoothly advance in complexity.

Question: “How many edges are defined within the graph?”

Answer:

First we have to define an AQL-query:

String query = "for i in GRAPH_EDGES('Academical', null) return i";

In our..

With ArangoDB 2.2 the new graph API was released featuring multi collection graphs (see blog). With the new version (2.2.1) of arangodb-java-driver the new graph API is supported. In the following you can find a small example of creating a graph with Java.

For the import via maven and configuring the driver, please read the Basics and Driver Setup. For the following we assume, that arangodbDriver is a configured instance of the driver.

So let’s start the whole thing…

In the database we need a graph containing collections for the vertices and edges (defined in edge definitions).

The current arangodb-java-driver supports the usage of ArangoDB’s batch and asynchronous interface. This post will guide you through the usage of these features.

The batch interface

The batch interface enables the user to stack a series of calls and execute them in a batch request. Each stacked request returns a request id that can be used to retrieve the single results from the batch response. So how do you use this feature in the java driver ?

First we create an instance of the java driver:

ArangoConfigure configure = new ArangoConfigure(); configure.init(); ArangoDriver driver = new..

A new arangodb-java-driver is out now, it’s on github. The driver is available for ArangoDB from version 2.2 onwards.

How to include the driver in your application ?

The driver is available as maven artifact. To add the driver to your project with maven, add the following code to your pom.xml:

<dependencies>
  <dependency>
    <groupId>com.arangodb</groupId>
    <artifactId>arangodb-java-driver</artifactId>
    <version>2.2</version>
  </dependency>
  ....
</dependencies>

We just released version 0.10 of the low-level ArangoDB Ruby driver Ashikawa::Core. It supports both ArangoDB 1.4 and 2.0. For more details see the release notes.

Yesterday version 1.0 of the PHP driver for ArangoDB was released. It contains basic support for edges as well as fixes and tests. Check out the Changelog for further details. Many thanks go to Frank Mayer for his contribution! 🙂

Note: Our new official nodejs driver is arangojs. You also can look at this blogpost about the new driver.

We got a note from Anders Elo from Sweden. He told us that he has released a ArangoDB client for node.js. Awesome! 🙂 You can find it on Github under the URL https://github.com/kaerus/arango-client. To install locally