Class: OCLC::Classify::Response

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

Constant Summary collapse

XPATH = 
{
  :code            => '//response/@code',
  :author          => '//work/@author',
  :title           => '//work/@title',
  :recommendations => '//recommendations',
}
KEYS = 
{
  :popular => 'mostpopular',
  :recent  => 'mostrecent',
  :latest  => 'latestedition',
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url) ⇒ Response

Returns a new instance of Response.



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# File 'lib/oclc_classify.rb', line 95

def initialize(url)
  @response = Nokogiri::HTML(open(url))
  @code     = @response.xpath(XPATH[:code]).to_s
  @author   = @response.xpath(XPATH[:author]).to_s
  @title    = @response.xpath(XPATH[:title]).to_s
end

Instance Attribute Details

#author ⇒ Object (readonly)

Returns the value of attribute author.



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# File 'lib/oclc_classify.rb', line 80

def author
  @author
end

#code ⇒ Object (readonly)

Returns the value of attribute code.



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# File 'lib/oclc_classify.rb', line 80

def code
  @code
end

#response ⇒ Object (readonly)

Returns the value of attribute response.



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# File 'lib/oclc_classify.rb', line 80

def response
  @response
end

#title ⇒ Object (readonly)

Returns the value of attribute title.



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# File 'lib/oclc_classify.rb', line 80

def title
  @title
end

Instance Method Details

#recommendations(scheme, key) ⇒ Object 



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# File 'lib/oclc_classify.rb', line 102

def recommendations(scheme, key)
  raise "Invalid scheme: must be 'ddc' or 'lcc'" unless scheme =~ /(dd|lc)c/
  raise "Invalid key: " + key.to_s unless KEYS.keys.include? key 
  path = '/' + scheme + '/' + KEYS[key]
  if @code == '0' or @code == '2'
    results = OCLC::Classify::Recommendations.new(@response.xpath(XPATH[:recommendations] + path))
    results.process
    return results.recommendations
  else
    return []
  end
end