#+TITLE: Semantic Web layer

[[file:img/semweb.png]]

* Table of Contents                                        :TOC_4_gh:noexport:
- [[#description][Description]]
- [[#install][Install]]
- [[#key-bindings][Key bindings]]

* Description
This layer adds support for RDF files in N3 and [[https://www.w3.org/TR/turtle/][Turtle syntax]] using [[https://bitbucket.org/nxg/ttl-mode][ttl-mode]]
and for [[https://www.w3.org/TR/sparql11-query/][SPARQL]] queries using [[https://github.com/ljos/sparql-mode][sparql-mode]].

SPARQL-mode supports the execution of queries. When first called, you will be
prompted for a SPARQL HTTP endpoint in the minibuffer, which defaults to
http://localhost:2020/. Once set, it will be used for all subsequent queries in
that buffer. Results will be displayed in another buffer in CSV format.

* Install
To use this configuration layer, add it to your =~/.spacemacs=. You will need to
add =semweb= to the existing =dotspacemacs-configuration-layers= list in this
file.

* Key bindings

| Key Binding | Description          |
|-------------+----------------------|
| ~SPC m q~   | Execute SPARQL query |