Non-Blocking MongoDB + NodeJS

Question

I am trying to find a document in a MongoDB collection in a NodeJS environment. Is there any way to do the following?

This is not working:

var foo = function (id) { // find document var document = database.find(id); // do whatever with the document ... }

This way creates a block :

var foo = function (id) { // find document var document = database.find(id); while (!database.find.done) { //wait } // do whatever with the document ... }

What I want to do :

var foo = function (id) { // find document var document = database.find(id); // pause out of execution flow // continue after find is finished // do whatever with the document ... }

I know I can use a callback but is there a simpler way of just "pausing" and then "continuing" in NodeJS/JavaScript? Sorry, I am still pretty new to web development.

TimWolla · Accepted Answer · 2014-03-04 01:02:46Z

This is not possible. If you are concerned about the readability of callbacks you may consider using a language that compiles to JavaScript. LiveScript for example has so called “Backcalls”, they make the code appear to be pausing, but compile to a callback function:

For example:

result <- mongodb.find id console.log result

compiles to:

mongodb.find(id, function(result){ return console.log(result); });

That's what I figured. :( Thanks for telling me about LiveScript, though!

Collectives™ on Stack Overflow

Non-Blocking MongoDB + NodeJS

1 Answer 1

1 Comment

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Linked

Related