freebase.rb

module Freebase
  require 'rest-client'

  NS = 'http://rdf.freebase.com/ns'
  API_URL = 'https://www.googleapis.com/freebase/v1'
  API_KEY = 'your_key_here'

  RestClient.proxy = ENV['http_proxy']
  MQLClient = RestClient::Resource.new(API_URL)

  def Freebase.mql(q)
    response = MQLClient['/mqlread'].get({params: { query: q.to_json }})

    return false if response.code != 200 # If errors
    return JSON.parse response # Otherwise
  end

  def Freebase.get_type_schema(type)

    _t = type.gsub(NS, '') # Strip the namespace if any

    q = [{  schema: _t,
            type:   "/type/property",
            name:  nil,
            id:    nil,
            expected_type: {
              :'/freebase/type_hints/mediator' =>  nil,
              name: nil,
              id:   nil },
            :"/freebase/property_hints/disambiguator" => nil,
            master_property:  nil,
            reverse_property: nil,
            unique: nil }];

    return Freebase.mql(q)
  end
end