Using NodeJs Style function callbacks with ArangoJS 3.x

Question

Is it possible to use NodeJs like function Callbacks with ArangoJs 3.x; I have seen that ArangoJs 3.x using .then method (promises).. But I am using NodeJs 4.4 .. so i can't use .then method there.. Can I use nodejs like function callbacks for arangojs 3.x ?

because .. there is no support for javascript promisses (.then) in node 4.x here you can see .. freature support.. node.green — Yuvaraj V
– Yuvaraj V, Commented Jul 27, 2016 at 18:18
There is no native support for the Promise object but if the ArangoJs library implements them on their own you can still use .then — Explosion Pills
– Explosion Pills, Commented Jul 27, 2016 at 18:40
No, Now ArangoJS provides native support for promises .. that's why .then method is there.. and working perfectely with node 6.3 .. but my question is .. is , still is it possible to use nodejs like function call backs instead of then.. i asking this for the sake of backword compability to work with older versions of nodejs(where no promise support..) — Yuvaraj V
– Yuvaraj V, Commented Jul 28, 2016 at 4:07
I don't think you're understanding. Have you tried to use .then? Also, node 4.4 does have native promises — Explosion Pills
– Explosion Pills, Commented Jul 28, 2016 at 15:57

dothebart · Accepted Answer · 2016-07-29 12:04:58Z

1

Quoting the ArangoJS github page:

// ES2015-style
import arangojs, {Database, aql} from 'arangojs';
let db1 = arangojs(); // convenience short-hand
let db2 = new Database();
let {query, bindVars} = aql`RETURN ${Date.now()}`;

// or plain old Node-style
var arangojs = require('arangojs');
var db1 = arangojs();
var db2 = new arangojs.Database();
var aql = arangojs.aql(['RETURN ', ''], Date.now());
var query = aql.query;
var bindVars = aql.bindVars;

// Using a complex connection string with authentication
let host = process.env.ARANGODB_HOST;
let port = process.env.ARANGODB_PORT;
let database = process.env.ARANGODB_DB;
let username = process.env.ARANGODB_USERNAME;
let password = process.env.ARANGODB_PASSWORD;
let db = arangojs({
  url: `http://${username}:${password}@${host}:${port}`,
  databaseName: database
});

// Using ArangoDB 2.8 compatibility mode
let db = arangojs({
  arangoVersion: 20800
});

Isn't that exactly what you were looking for?

answered Jul 29, 2016 at 12:04

dothebart

6,07718 silver badges41 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Yuvaraj V Over a year ago

First of all i want to thank for this answer... But this is not exactly what i want.. I have seen it already.. But how can i write same to create a collection.. The same is not working for collections.. if you can please give example to create collection using node js style clalbacks.. because creating collection varies from other stuf..

Alan Plum Over a year ago

@shivaraj try db.collection('someCollection').create(function (err, res) {...})?

Yuvaraj V Over a year ago

Thank you very much @AlanPlum , now i get clear with that.. and please change the answer that only explains our main problem.. give collection example too..

Collectives™ on Stack Overflow

Using NodeJs Style function callbacks with ArangoJS 3.x

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related