.. _ref-creating-new-backends:

=====================
Creating New Backends
=====================

The process should be fairly simple.

#. Create new backend file. Name is important.
#. Two classes inside.

   #. SearchBackend (inherit from haystack.backends.BaseSearchBackend)
   #. SearchQuery (inherit from haystack.backends.BaseSearchQuery)


SearchBackend
=============

Responsible for the actual connection and low-level details of interacting with
the backend.

* Connects to search engine
* Method for saving new docs to index
* Method for removing docs from index
* Method for performing the actual query


SearchQuery
===========

Responsible for taking structured data about the query and converting it into a
backend appropriate format.

* Method for creating the backend specific query - ``build_query``.