Class: UR::SabSearch

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

Constant Summary collapse

SEARCH_SERVICE_URL = 
'http://services.ur.se/search'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sab_code, options = {}) ⇒ SabSearch

Returns a new instance of SabSearch.



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# File 'lib/ur/sab_search.rb', line 15

def initialize(sab_code, options = {})
  solr = RSolr.connect :url => SEARCH_SERVICE_URL
  @sab = UR::Sab.new(sab_code) unless sab_code.nil?

  response = solr.find({
    :indent => 'on',
    :qt => 'sab',
    'facet.mincount' => 1,
    'facet.limit' => -1,
    'facet.prefix' => sab_code,
    :q => '*:*',
  }.merge(options))

  # Expose the Solr response
  @solr = response

  facet_counts = Hash[*response['facet_counts']['facet_fields']['sab_subjects']]

  sorted_subjects = facet_counts.keys.sort { |l,r| r <=> l }
  reduced_facet_counts = {}

  sorted_subjects.each_index do |j|
    current_code = sorted_subjects[j]
    next_code    = sorted_subjects[j + 1]
    count        = facet_counts[current_code]

    if !next_code.nil? && current_code.match(next_code)
      if facet_counts[next_code] != count
        reduced_facet_counts[current_code] = count
      end
    else
      reduced_facet_counts[current_code] = count
    end
  end

  @subjects = reduced_facet_counts.map { |code, count|
      if (@sab.nil? && code.length == 1) ||
         (!@sab.nil? && code.length < @sab.code.length+2) ||
         (!@sab.nil? && code.match(/#{@sab.code}\.\d$/)) ||
         (!@sab.nil? && code.match(/#{@sab.code}\:\w{1,2}$/))
        sab = UR::Sab.new(code, count)
        sab if sab.text
      end
  }.compact.sort { |l,r| l.code <=> r.code }
end

Instance Attribute Details

#sab ⇒ Object (readonly)

Returns the value of attribute sab.



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# File 'lib/ur/sab_search.rb', line 13

def sab
  @sab
end

#solr ⇒ Object (readonly)

Returns the value of attribute solr.



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# File 'lib/ur/sab_search.rb', line 13

def solr
  @solr
end

#subjects ⇒ Object (readonly)

Returns the value of attribute subjects.



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# File 'lib/ur/sab_search.rb', line 13

def subjects
  @subjects
end