Simple Ruby RDF generator

generate_rdf.rb

require 'csv'

class Observation
  attr :id
  attr :province
  attr :indicator_name
  attr :indicator_value
  attr :year
  attr :dataset

  def initialize(id, province, year, indicator_name, indicator_value)
    @id = id
    @province = province
    @year = year
    @indicator_name = indicator_name
    @indicator_value = indicator_value
  end


  def to_s
    obs = Hash.new
    obs['open'] = %{<rdf:Description rdf:about="http://stats.gov.sy/#{@year}/#{@indicator_name}.rdf#obs#{@id}">}
    obs['rdftype'] = %{\n\t<rdf:type rdf:resource="http://purl.org/linked-data/cube#Observation" />}
    obs['province'] = %{\n\t<cbssyr:province rdf:resource="http://cbssyr.herokuapp.com/provinces.rdf##{@province}" />}
    obs['year'] = %{\n\t<cbssyr:year>#{@year}</cbssyr:year>}
    obs['indicator'] = %{\n\t<cbssyr:#{@indicator_name}>#{@indicator_value}</cbssyr:#{@indicator_name}>}
    obs['dataset'] = %{\n\t<qb:dataset rdf:resource="http://stats.gov.sy/#{@year}/#{@indicator_name}.rdf#dataset"/>}
    obs['label'] = %{\n\t<rdfs:label>OBS#{@id}</rdfs:label>}
    obs['end'] = %{\n</rdf:Description>}
    export = ""

    obs.each do |key, value|
      export = export + value
    end

    export

  end
end



obser = Hash.new




provinces = Array.new

provinces.push "Damascus"
provinces.push "Aleppo"
provinces.push "Rural_Damascus"
provinces.push "Homs"
provinces.push "Hama"
provinces.push "Lattakia"
provinces.push "Idleb"
provinces.push "Al-Hasakeh"
provinces.push "Dir-ez-Zor"
provinces.push "Tartous"
provinces.push "Al-Rakka"
provinces.push "Daraa"
provinces.push "Al-Sweida"
provinces.push "Al-Quneitra"


# enter data here

indicators_array = []

year = 0
indicator = ""
indicator_label = ""

Dir.foreach(Dir.pwd) do |item|
  next if item == '.' or item == '..' or item == 'test.rb' or item == 'data'
  i = 0
  puts item
  CSV.foreach(item) do |row|
    if i == 0
      year = row[0]
      puts year
    end

    if i == 1
      indicator_label = row[0].downcase
      indicator = row[0].downcase
      indicator.gsub!(" ","-")
      indicators_array.push [indicator, indicator_label]
    end

    j = i - 2
    if j >= 0 and j <= 13
      j = i - 2
      obser[j] = Observation.new(j, provinces[j], year, indicator, row[1])
    end
    i = i + 1
  end

  File.open("data/" + indicator, 'w') do |f|
    #generating file header

    f.puts <<DOC
<?xml version="1.0" encoding="utf-8" ?>
<rdf:RDF
  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
  xmlns:qb="http://purl.org/linked-data/cube#"
  xmlns:provinces="http://cbssyr.herokuapp.com/provinces.rdf#"
  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
  xmlns:cbssyr="http://cbssyr.herokuapp.com/cbssyr#"
>

DOC

    #generating dataset information
    f.puts <<DOC
<rdf:Description rdf:about="http://stats.gov.sy/#{year}/#{indicator}">
  <rdf:type rdf:resource="http://purl.org/linked-data/cube#DataSet" />
  <qb:structure rdf:resource="http://stats.gov.sy/dsd/#{indicator}"/>
  <rdfs:label>#{indicator_label} in year #{year}</rdfs:label>
</rdf:Description>
DOC


  f.puts


  obser.each do |key, value|
    f.puts value.to_s
    f.puts
  end


    f.puts <<DOC
</rdf:RDF>
DOC


    end


end



File.open("cbssyr", 'w') do |f|

f.puts <<DOC
<?xml version="1.0" encoding="utf-8" ?>
<rdf:RDF
  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
  xmlns:qb="http://purl.org/linked-data/cube#"
  xmlns:provinces="http://cbssyr.herokuapp.com/provinces.rdf#"
  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
>


<rdf:Description rdf:about="cbssyr#province">
  <rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#rdf:Property" />
  <rdf:type rdf:resource="http://purl.org/linked-data/cube#qb:DimensionProperty" />
  <rdfs:label>province</rdfs:label>
  <rdfs:range rdf:resource="file:///home/amjad/linked_data/provinces.rdf#Province" />
</rdf:Description>

<rdf:Description rdf:about="cbssyr#year">
  <rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#rdf:Property" />
  <rdf:type rdf:resource="http://purl.org/linked-data/cube#qb:DimensionProperty" />
  <rdfs:label>year</rdfs:label>
  <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#gYear" />
</rdf:Description>

DOC


indicators_array.each do |value|
  f.puts <<DOC
<rdf:Description rdf:about="cbssyr##{value[0]}">
  <rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#rdf:Property" />
  <rdf:type rdf:resource="http://purl.org/linked-data/cube#qb:MeasureProperty" />
  <rdfs:label>#{value[1]}</rdfs:label>
  <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#nonNegativeInteger" />
</rdf:Description>
DOC

end


f.puts <<DOC
</rdf:RDF>
DOC



end