Ldpath
This is a ruby implementation of LDPath, a language for selecting values linked data resources.
Installation
Required gem installation
Add this line to your application's Gemfile:
gem 'ldpath'
And then execute:
$ bundle
Or install it yourself as:
$ gem install ldpath
Additional gem installations
To support RDF serializations, you will need to either install the linkeddata gem which installs a large set of RDF serializations or, in order to have a smaller dependency footprint, install gems for only the serializations your plan to use in your app. The list of serializations are in the README for the linkeddata gem.
Usage
require 'ldpath'
my_program = <<-EOF
@prefix dcterms : <http://purl.org/dc/terms/> ;
title = dcterms:title :: xsd:string ;
EOF
uri = RDF::URI.new "info:a"
context = RDF::Graph.new << [uri, RDF::Vocab::DC.title, "Some Title"]
program = Ldpath::Program.parse my_program
output = program.evaluate uri, context: context
# => { ... }
Compatibility
- Ruby 2.5 or the latest 2.4 version is recommended. Later versions may also work.
Product Owner & Maintenance
LDPath is moving toward being a Core Component of the Samvera community. The documentation for what this means can be found here.
Product Owner
Help
The Samvera community is here to help. Please see our support guide.
Acknowledgments
This software has been developed by and is brought to you by the Samvera community. Learn more at the Samvera website.
Special thanks to...
Chris Beer for the initial implementation of this gem!