Count metadata as part of the response

I'm a developer working for the open data initiative in Paraguay and I'm really interested in adding this project to our set of tools for exposing open data APIs.

Particularly, I would like to implement a simple proxy server to translate to/from Datatables server-side API[1], in order to offer generic easy-to-use filterable tables from datasets.

As I see it, a Databeam API offers _almost_ all attributes required by Datatables. I'm still missing two important attributes: _recordsTotal_ and _recordsFiltered_, which are basically count attributes from before and after applying filters.

Is there away to configure/extend DataBeam to provide such parameters in its response, or even as a part of a separate service? And if it's possible, how hard is it?

I read this in your feature list:

> You can create custom SQL queries as new endpoints for more complex statements like JOINs across multiple tables.

I'd really appreciate an answer to avoid pursuing a dead-end idea.
Thanks, and keep up the good work!

[1] http://datatables.net/manual/server-side