#LD4L::FoafRDF
LD4L FOAF RDF provides tools for modeling person triples based on the FOAF ontology and persisting to a triplestore.
Temporary get the gem from github until the gem is released publicly.
Add this line to your application's Gemfile:
gem 'ld4l-foaf_rdf'
And then execute:
$ bundle install
Or install it yourself as:
$ gem install ld4l-foaf_rdf
Caveat: This gem is part of the LD4L Project and is being used in that context. There is no guarantee that the code will work in a usable way outside of its use in LD4L Use Cases.
Setup required for all examples.
require 'ld4l/foaf_rdf'
# create an in-memory repository
ActiveTriples::Repositories.add_repository :default, RDF::Repository.new
Example creating a person.
p = LD4L::FoafRDF::Person.new('p4')
puts p.dump :ttl
Example triples created for a person.
<http://localhost/p4> a <http://xmlns.com/foaf/0.1/Person> .
- base_uri - base URI used when new resources are created (default="http://localhost/")
- localname_minter - minter function to use for creating unique local names (default=nil which uses default minter in active_triples-local_name gem)
Setup for all examples.
- Restart your interactive session (e.g. irb, pry).
- Use the Setup for all examples in main Examples section above.
Example usage using configured base_uri and default localname_minter.
LD4L::FoafRDF.configure do |config|
config.base_uri = "http://example.org/"
end
p = LD4L::FoafRDF::Person.new(ActiveTriples::LocalName::Minter.generate_local_name(
LD4L::FoafRDF::Person, 10, {:prefix=>'p'} ))
puts p.dump :ttl
NOTE: If base_uri is not used, you need to restart your interactive environment (e.g. irb, pry). Once the Person class is instantiated the first time, the base_uri for the class is set. If you ran through the main Examples, the base_uri was set to the default base_uri.
Example triples created for a person with configured base_uri and default minter.
<http://example.org/p45c9c85b-25af-4c52-96a4-cf0d8b70a768> a <http://xmlns.com/foaf/0.1/Person> .
Example usage using configured base_uri and configured localname_minter.
LD4L::FoafRDF.configure do |config|
config.base_uri = "http://example.org/"
config.localname_minter = lambda { |prefix=""| prefix+'_configured_'+SecureRandom.uuid }
end
p = LD4L::FoafRDF::Person.new(ActiveTriples::LocalName::Minter.generate_local_name(
LD4L::FoafRDF::Person, 10, 'p',
&LD4L::FoafRDF.configuration.localname_minter ))
puts p.dump :ttl
NOTE: If base_uri is not used, you need to restart your interactive environment (e.g. irb, pry). Once the Person class is instantiated the first time, the base_uri for the class is set. If you ran through the main Examples, the base_uri was set to the default base_uri.
Example triples created for a person with configured base_uri and configured minter.
<http://example.org/p_configured_6498ba05-8b21-4e8c-b9d4-a6d5d2180966> a <http://xmlns.com/foaf/0.1/Person> .
The LD4L::FoafRDF gem provides model definitions using the ActiveTriples framework extension of ruby-rdf/rdf. The following models are provided:
- LD4L::FoafRDF::Person - Implements the Person class in the FOAF ontology. (extremely simple for holding rdf_subject only)
The listed ontologies are used to represent the primary metadata about the person. Other ontologies may also be used that aren't listed.
- Fork it ( https://github.com/[my-github-username]/ld4l-foaf_rdf/fork )
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create a new Pull Request