Module: Spira::Type

Overview

Spira::Type can be included by classes to create new property types for Spira. 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 Spira::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 Spira by default. It allows either of the following forms to declare an integer property on a Spira resource:

property :age, predicate: RDF::Vocab::FOAF.age, type: Integer
property :age, predicate: RDF::Vocab::FOAF.age, type: RDF::XSD.integer

`Spira::Type`s include the RDF namespace and thus have all of the base RDF vocabularies available to them without the `RDF::` prefix.

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Class Method Details

.included(child) ⇒ Object

Make the DSL available to a child class.


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# File 'lib/spira/type.rb', line 43

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