Class: Tagme

Inherits:
Object
  • Object
show all
Defined in:
lib/tagme.rb

Constant Summary collapse

API_PATH =

API to TAGME API

Example:

>> Tagme.new('[API Key]').tag('nano fibers')
=> [ #<Result:...>, ... ]

Arguments:

api_key: (String)

'http://tagme.di.unipi.it/api'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(api_key, lang = 'en', referer = '') ⇒ Tagme

Returns a new instance of Tagme.



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# File 'lib/tagme.rb', line 22

def initialize(api_key, lang='en', referer='')
  @api_key = api_key
  @lang = lang
  @referer = referer
end

Instance Attribute Details

#api_key ⇒ Object

Returns the value of attribute api_key.



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# File 'lib/tagme.rb', line 20

def api_key
  @api_key
end

#lang ⇒ Object

Returns the value of attribute lang.



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# File 'lib/tagme.rb', line 20

def lang
  @lang
end

#referer ⇒ Object

Returns the value of attribute referer.



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# File 'lib/tagme.rb', line 20

def referer
  @referer
end

Instance Method Details

#tag(string) ⇒ Object 



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# File 'lib/tagme.rb', line 28

def tag(string)
  params = "?text=#{CGI.escape(string)}&key=#{@api_key}&lang=#{@lang}"
  response = open(API_PATH + params, { 'Referer' => @referer })
  return nil if response.class.superclass == Net::HTTPServerError
  doc = Nokogiri::XML(response)
  doc.xpath('//annotation/spot').zip(
    doc.xpath('//annotation/title'),
    doc.xpath('//annotation/id'),
    doc.xpath('//annotation/rho')
  ).inject([]) do |results, annotation|
    results << Result.new({
      :spot => {
        :pos => annotation[0].attribute('pos').content.to_i,
        :len => annotation[0].attribute('len').content.to_i
      },
      :title => annotation[1].content,
      :wikipedia_id => annotation[2].content.to_i,
      :rho => annotation[3].content.gsub(',', '.').to_f
    })
  end
end