Class: Masticate::Datify

Inherits:
Base
  • Object
show all
Defined in:
lib/masticate/datify.rb

Overview

convert date columns to numerics

Instance Attribute Summary

Attributes inherited from Base

#csv_options, #filename, #input, #input_count, #output, #output_count

Instance Method Summary collapse

Methods inherited from Base

#emit, #execute, #get, #initialize, #standard_options, #with_input

Constructor Details

This class inherits a constructor from Masticate::Base

Instance Method Details

#configure(opts) ⇒ Object 



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# File 'lib/masticate/datify.rb', line 4

def configure(opts)
  standard_options(opts)
  @field = opts[:field] or raise "missing field to datify"
  @format = opts[:format] or raise "strptime format required for parsing timestamps"
end

#crunch(row) ⇒ Object 



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# File 'lib/masticate/datify.rb', line 14

def crunch(row)
  if !@index
    if @field.is_a?(Fixnum) || @field =~ /^\d+/
      @index = @field.to_i
    else
      @index = row.index(@field) or raise "Unable to find column '#{@field}'"
    end
  elsif row
    row[@index] = DateTime.strptime(row[@index], @format).to_time.to_i rescue nil
  end
  row
end

#datify(opts) ⇒ Object 



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# File 'lib/masticate/datify.rb', line 10

def datify(opts)
  execute(opts)
end