![Build Status](https://drone.io/bitbucket.org/doug_burke/swish/status.png)

[drone.io status page](https://drone.io/bitbucket.org/doug_burke/swish)

# Introduction

Swish - which stands for Semantic Web Inference Scripting in Haskell -
was written by Graham Klyne as a framework, written in the purely
functional programming language Haskell, for performing deductions in
RDF data using a variety of techniques. Swish was conceived as a
toolkit for experimenting with RDF inference, and for implementing
stand-alone RDF file processors (usable in similar style to CWM, but
with a view to being extensible in declarative style through added
Haskell function and data value declarations). One of the aims was to
explore Haskell as "[a scripting language for the Semantic
Web](http://www.ninebynine.org/RDFNotes/Swish/Intro.html)".

It was updated from version 0.2.1 by Vasili I Galchin so that it would
build with the current version of GHC, and
[released on Hackage](http://hackage.haskell.org/package/swish-0.2.1).

Since then it has been updated to take advantage of recent
developments in the Haskell ecosystem, add support for the NTriples
and Turtle serialisation formats, and a number of convenience
functions. Development is done on the [bitbucket
site](https://bitbucket.org/doug_burke/swish/); there is an *outdated*
version [on GitHub](https://github.com/DougBurke/swish), which was
being used for its access to Travis, but now I use [drone.io for
build/testing](https://drone.io/bitbucket.org/doug_burke/swish).

# Aim

Current development is based on my own needs, which are more about
using this as a RDF library for I/O with limited querying rather than
for inferencing or use as a flexible graph-processing library
(e.g. for extensions to non-RDF models).

# Copyright

    (c) 2003, 2004 G. Klyne
    (c) 2009 Vasili I Galchin
    (c) 2011, 2012, 2013, 2014 Doug Burke

All rights reserved.

# License

[GPL V2](https://bitbucket.org/doug_burke/swish/src/tip/LICENSE)

# Haskell and the Semantic Web 

Other Haskell packages for RDF support include

 * [rdf4h](http://hackage.haskell.org/package/rdf4h)
 * [hsparql](http://hackage.haskell.org/package/hsparql)
 * [hasparql-client](http://hackage.haskell.org/package/hasparql-client)

# Installation

Install a recent version of the [Haskell
platform](http://hackage.haskell.org/platform/) and then try

    % cabal update
    % cabal install swish

This will install a command-line tool `Swish` along with the modules
in the `Swish` namespace; documentation can be found 
[on Hackage](http://hackage.haskell.org/package/swish).