module ActiveTriples

An ActiveModel compliant ObjectGraphMapper for RDF data.

Models graphs as ‘RDFSources` with property/attribute configuration, accessors, and other methods to support Linked Data in a Ruby enviornment.

@example modeling a simple resource

class Thing
  include  ActiveTriples::RDFSource
  configure :type => RDF::OWL.Thing, :base_uri => 'http://example.org/things#'
  property :title, :predicate => RDF::DC.title
  property :description, :predicate => RDF::DC.description
end

obj = Thing.new('123')
obj.title = 'Resource'
obj.description = 'A resource.'
obj.dump :ntriples 
 # => "<http://example.org/things#123> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#Thing> .\n<http://example.org/things#123> <http://purl.org/dc/terms/title> \"Resource\" .\n<http://example.org/things#123> <http://purl.org/dc/terms/description> \"A resource.\" .\n"

@see www.w3.org/TR/2014/REC-rdf11-concepts-20140225/#change-over-time

RDF Concepts and Abstract Syntax for an informal definition of an RDF 
Source.

Constants

VERSION

Public Class Methods

ActiveTripels() click to toggle source

A simplified, Belgian version of this software

# File lib/active_triples.rb, line 104
  def self.ActiveTripels
    puts <<-eos

        ###########
        ******o****
         **o******
          *******
           \\***/
            | |
            ( )
            / \\
        ,---------.

eos
"Yum"
  end

class_from_string(class_name, container_class=Kernel) click to toggle source

Converts a string for a class or module into a a constant. This will find classes in or above a given container class.

@example finding a class in Kernal

ActiveTriples.class_from_string('MyClass') # => MyClass

@example finding a class in a module

ActiveTriples.class_from_string('MyClass', MyModule) 
# => MyModule::MyClass

@example when a class exists above the module, but not in it

ActiveTriples.class_from_string('Object', MyModule) 
# => Object

@param class_name [String] @param container_class

@return [Class]

# File lib/active_triples.rb, line 86
def self.class_from_string(class_name, container_class=Kernel)
  container_class = container_class.name if container_class.is_a? Module
  container_parts = container_class.split('::')
  (container_parts + class_name.split('::'))
    .flatten.inject(Kernel) do |mod, class_name|
    if mod == Kernel
      Object.const_get(class_name)
    elsif mod.const_defined? class_name.to_sym
      mod.const_get(class_name)
    else
      container_parts.pop
      class_from_string(class_name, container_parts.join('::'))
    end
  end
end