ActiveRDF is a library for accessing RDF data from Ruby programs. It can be used as data layer in Ruby-on-Rails, similar to ActiveRecord (which provides an O/R mapping to relational databases). ActiveRDF in RoR allows you to create semantic web applications very rapidly. ActiveRDF gives you a Domain Specific Language (DSL) for your RDF model: you can address RDF resources, classes, properties, etc. programmatically, without queries.
See www.activerdf.org for more information.
See wiki.activerdf.org/GettingStartedGuide for information on how to install ActiveRDF, point to data sources, and use it. In brief: “gem install activerdf_sparql”.
The following example uses a SPARQL endpoint with FOAF data and displays all people found in the data source:
require 'activerdf' ConnectionPool.add_data_source :type => :sparql, :host => '...' Namespace.register :foaf, 'http://xmlns.com/foaf/0.1/' ObjectManager.construct_classes people = FOAF::Person.find_all
ActiveRDF is distributed under the LGPL license.