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thick class, thin application example
this example from a Well House Consultants training course
More on this [link]

This example is described in the following article(s):
   • Thin application, thick objects - keep you main code simple. Example in Ruby - [link]

Source code: stations.rb Module: R102
# thick class, thin application example

class Station
        def initialize(record)
                @fol = record.chomp.split "\t"
        end
        def self.factory(fyle)
                fh = File.new fyle
                pallet = []
                loop do
                        lyne = fh.gets
                        lyne or break
                        if lyne =~ /NULL/
                                got = Partial.new lyne
                        else
                                got = Full.new lyne
                        end
                        pallet.push got
                end
                return pallet
        end
        def <=> (that)
                c1 = self.getRecent
                c2 = that.getRecent
                return ((c1 and c2) ? c1-c2 : (c1.nil? ? 1 : -1))
        end
        def getRecent()
                return @fol[-1].to_i
        end
        def to_s()
                return "#{"%30s"%@fol[6]} ... #{@fol[-1]}"
        end
end
class Partial < Station
        def getRecent()
                return nil
        end
end
class Full < Station
end

# ----------------------------

stations = Station.factory("rstats2014.xyz")

stations.sort!

for k in (0...20) do
        puts stations[k]
end

__END__ Sample output

WomanWithCat:skyrubyleeds grahamellis$ ruby !$
ruby stations.rb
             Tees-Side Airport ... 8
                  Shippea Hill ... 12
                   Barry Links ... 40
                        Coombe ... 42
                        Breich ... 64
                     Buckenham ... 80
                       Pilning ... 88
                   Golf Street ... 90
                Kirton Lindsey ... 120
                    Altnabreac ... 138
                      Kildonan ... 144
                Elton & Orston ... 166
                    Acklington ... 176
                      Achanalt ... 228
                     Chapelton ... 232
                    Sugar Loaf ... 240
                       Hensall ... 276
                    Havenhouse ... 278
                       Clifton ... 298
                     Rawcliffe ... 314
WomanWithCat:skyrubyleeds grahamellis$

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