Class: OpenCoinage::Currency

Inherits:

Object

• Object
• OpenCoinage::Currency

show all

Defined in:

lib/opencoinage/currency.rb

Overview

Constant Summary

RDF_TYPE =

Vocabulary[:Currency]

Instance Attribute Summary (collapse)

• - (Issuer) issuer

  The issuer of this currency.

• - (String) name

  The name of this currency.

• - (RDF::URI) uri (also: #to_uri) readonly

  The URI identifying this currency.

Instance Method Summary (collapse)

• - (Currency) initialize(uri = nil, options = {}) constructor

  Initializes the currency.

• - (Hash) to_hash

  Returns the hash table representation of this currency.

• - (String) to_json

  Returns the JSON representation of this currency.

• - (RDF::Graph) to_rdf(options = {})

  Returns the RDF representation of this currency.

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# File 'lib/opencoinage/currency.rb', line 17

def initialize(uri = nil, options = {})
  @uri    = RDF::URI(uri || UUID.generate(:urn))
  @name   = options[:name]   if options.has_key?(:name)
  @issuer = options[:issuer] if options.has_key?(:issuer)
end

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# File 'lib/opencoinage/currency.rb', line 42

def issuer
  @issuer
end

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# File 'lib/opencoinage/currency.rb', line 35

def name
  @name
end

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# File 'lib/opencoinage/currency.rb', line 27

def uri
  @uri
end

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# File 'lib/opencoinage/currency.rb', line 48

def to_hash
  {:name => name, :issuer => issuer}
end

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# File 'lib/opencoinage/currency.rb', line 58

def to_json
  require 'json' unless defined?(::JSON)
  to_hash.merge(:issuer => issuer.to_uri.to_s).to_json
end

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# File 'lib/opencoinage/currency.rb', line 71

def to_rdf(options = {})
  RDF::Graph.new(options[:context]) do |graph|
    graph << [uri, RDF.type, self.class.const_get(:RDF_TYPE)]
    graph << [uri, RDF::FOAF.name, name] if name
    graph << [uri, Vocabulary[:issuer], issuer.to_uri] if issuer
  end
end