Module: Gearbox::Type

Includes:
RDF
Included in:
Gearbox::Types::Any, Gearbox::Types::Boolean, Gearbox::Types::Date, Gearbox::Types::Decimal, Gearbox::Types::Float, Gearbox::Types::Integer, Gearbox::Types::Native, Gearbox::Types::String, Gearbox::Types::URI
Defined in:
lib/gearbox/type.rb

Overview

This was taken wholesale from Spira. I think Ben did a great job with that. I have nothing to add or detract from his good work.

Gearbox::Type can be included by classes to create new property types for Gearbox. These types are responsible for serialization a Ruby value into an RDF::Value, and deserialization of an RDF::Value into a Ruby value.

A simple example:

class Integer
  
  include Gearbox::Type
  
  def self.unserialize(value)
    value.object
  end
  
  def self.serialize(value)
    RDF::Literal.new(value)
  end
  
  register_alias XSD.integer
end

This example will serialize and deserialize integers. It's included with Gearbox by default. It allows either of the following forms to declare an integer property on a Gearbox resource:

property :age, :predicate => FOAF.age, :type => Integer
property :age, :predicate => FOAF.age, :type => XSD.integer

Gearbox::Types include the RDF namespace and thus have all of the base RDF vocabularies available to them without the RDF:: prefix.

See Also:

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Class Method Details

.included(child) ⇒ Object

Make the DSL available to a child class.



46
47
48
49
 
# File 'lib/gearbox/type.rb', line 46

def self.included(child)
  child.extend(ClassMethods)
  Gearbox.type_alias(child,child)
end