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The DSE driver is built on top of Node.js CQL driver for Apache Cassandra and provides the following extensions for DataStax Enterprise:

• Authenticator implementations that use the authentication scheme negotiation in the server-side DseAuthenticator
• Geospatial types support
• DSE Graph integration

Getting Started

Client inherits from the CQL driver counterpart. All CQL features available to Client (see the CQL driver manual) can also be used with the Client of the DSE module.

const dse = require('dse-driver');
const client = new dse.Client({
  contactPoints: ['h1', 'h2']
});

const query = 'SELECT name, email FROM users WHERE key = ?';
client.execute(query, [ 'someone' ])
  .then(result => console.log('User with email %s', result.rows[0].email));

Alternatively, you can use the callback-based execution for all asynchronous methods of the API.

client.execute(query, [ 'someone' ], function(err, result) {
  assert.ifError(err);
  console.log('User with email %s', result.rows[0].email);
});

The dse-driver module also exports the submodules from the CQL driver, so you only need to import one module to access all DSE and Cassandra types.

For example:

const dse = require('dse-driver');
const Uuid = dse.types.Uuid;

Graph

Client includes a executeGraph() method to execute graph queries:

// executeGraph() method returns a Promise when no callback has been provided
const result = await client.executeGraph('g.V()');
const vertex = result.first();
console.log(vertex.label);