| .. Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| .. use this file except in compliance with the License. You may obtain a copy of |
| .. the License at |
| .. |
| .. http://www.apache.org/licenses/LICENSE-2.0 |
| .. |
| .. Unless required by applicable law or agreed to in writing, software |
| .. distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| .. WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| .. License for the specific language governing permissions and limitations under |
| .. the License. |
| |
| .. _query-server: |
| |
| ============ |
| Query Server |
| ============ |
| |
| The `Query server` is an external process that communicates with CouchDB by JSON |
| protocol through stdio interface and processed all |
| :ref:`design functions <ddocs>` calls: |
| :ref:`views <viewfun>`, :ref:`shows <showfun>`, :ref:`lists <listfun>` and more. |
| |
| The default query server is written in |
| :ref:`JavaScript <query-server/js>`, running via `Mozilla SpiderMonkey`_. |
| You can use other languages by setting a Query server key in the ``language`` |
| property of a design document or the `Content-Type` header of a |
| `temporary view`. Design documents that do not specify a ``language`` property |
| are assumed to be of type `javascript`, as are ad hoc queries that are POSTed to |
| :ref:`_temp_view <api/db/temp_view>` without a `Content-Type` header. |
| |
| .. _Mozilla SpiderMonkey: https://developer.mozilla.org/en/docs/SpiderMonkey |
| |
| .. toctree:: |
| :maxdepth: 2 |
| |
| protocol |
| javascript |
| erlang |
| |
