Class: Helper

Inherits:
Encoder show all
Defined in:
lib/eba/helper.rb

Direct Known Subclasses

BCB

Instance Method Summary collapse

Methods inherited from Encoder

#encode

Constructor Details

#initialize ⇒ Helper

Returns a new instance of Helper.



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# File 'lib/eba/helper.rb', line 5

def initialize()
end

Instance Method Details

#build_bcb_data(xml_result) ⇒ Object 



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# File 'lib/eba/helper.rb', line 8

def build_bcb_data(xml_result)
  d = Data_bcb.new(xml_result)

  if d.name[" - com ajuste sazonal"] != nil then
    d.seasonally_adjusted = true

    if d.seasonally_adjusted then
      d.name.slice!(" - com ajuste sazonal")
    end   
  end

  d.name = encode(d.name)
  d.periodicity = encode(d.periodicity)
  d.unit = encode(d.unit)
  d.value = encode(d.value)
  
  return d
end

#extract_an_item(serie, code_x_data_hash, collection) ⇒ Object 



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# File 'lib/eba/helper.rb', line 42

def extract_an_item(serie, code_x_data_hash, collection)
  # recover identifying data from the getLastValue method,
  # as the get_valores_series_xml desn't have identifying data
  # as series name, periodicity, etc.   
  if serie.to_s.inspect["SERIE ID"] != nil then
    code = serie.to_s.match(/SERIE ID=\"([0-9]+)\"/)[1].to_i
    base_data = code_x_data_hash[code]

    if base_data != nil then
      serie.css("ITEM").each do |item|
        dia = "01"
        mes = "1"
        ano = "1"
        data = item.css("DATA").text.split("/")

        if base_data.periodicity == 'D' then
          dia = data[0]
          mes = data[1]
          ano = data[2]
        else
          mes = data[0]
          ano = data[1]
        end 

        collection <<  Data_bcb.new([base_data.name, code, 
                                      base_data.periodicity, 
                                     base_data.unit, 
                                     dia, mes, ano, 
                                     item.css("VALOR").text,
                                     base_data.seasonally_adjusted])
      end  
    else
      puts "ERROR BCB: Failure do locate #{code} in the data collection #{code_x_data_hash.keys}"
    end
  end
end

#purge_invalid_series(array_of_codes, hash_last_values) ⇒ Object

Removes all invalid series from an array.

An invalid series has last value.



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# File 'lib/eba/helper.rb', line 30

def purge_invalid_series(array_of_codes, hash_last_values)
  result = []

  array_of_codes.each do |code|
    if hash_last_values[code] != nil then
      result << code
    end
  end

  return result 
end