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