Example rules

gistfile1.txt

    engine << [ "Order", "subtotal", 10 ]
    engine << [ "Guest", "service_fee_markup", 10 ]
    engine << [ "Guest", "service_fee_fixed",  10 ]
    engine << [ "Host",  "service_fee_markup",  10 ]
    engine << [ "Host",  "service_fee_fixed",   10 ]

    engine << [ "Guest", "trans_fee_markup",       10 ]
    engine << [ "Guest", "trans_fee_fixed_amount", 10 ]
    engine << [ "Host", "trans_fee_markup",        10 ]
    engine << [ "Host", "trans_fee_fixed_amount",  10 ]


    engine.rule "guest_service_fee_markup_amount" do
      forall {
        has :Order, "subtotal",           :subtotal
        has :Guest, "service_fee_markup", :service_fee_markup
      }
      make {
        action { |token|
          engine << [ "Guest", "service_fee_markup_amount", ( token[:subtotal]*token[:service_fee_markup]/CosembleWEBAPP::Application::UNIT_ONE_HUNDRED ).round ]

        }
      }
    end

    engine.rule "total" do
      forall {
        has :Order, "subtotal",                  :subtotal
        has :Guest, "service_fee_markup_amount", :service_fee_markup_amount
        has :Guest, "service_fee_fixed",         :service_fee_fixed
      }
      make {
        action { |token|
          engine << [ "Order", "total", token[:subtotal]+token[:service_fee_markup_amount]+token[:service_fee_fixed] ]
        }
      }
    end


    engine.rule "host_service_fee_markup_amount" do
      forall {
        has :Order, "subtotal",           :subtotal
        has :Host,  "service_fee_markup", :service_fee_markup
      }
      make {
        action { |token|
          engine << [ "Host", "service_fee_markup_amount", ( token[:subtotal]*token[:service_fee_markup]/CosembleWEBAPP::Application::UNIT_ONE_HUNDRED ).round ]

        }
      }
    end

    engine.rule "guest_trans_fee_markup_amount" do
      forall {
        has :Order, "total",            :total
        has :Guest, "trans_fee_markup", :trans_fee_markup
      }
      make {
        action { |token|
          engine << [ "Guest", "trans_fee_markup_amount", ( token[:total]*token[:trans_fee_markup]/CosembleWEBAPP::Application::UNIT_ONE_HUNDRED ).round ]
        }
      }
    end

    engine.rule "host_trans_fee_markup_amount" do
      forall {
        has :Order, "total",           :total
        has :Host,  "trans_fee_markup", :trans_fee_markup
      }
      make {
        action { |token|
          engine << [ "Host", "trans_fee_markup_amount", ( token[:total]*token[:trans_fee_markup]/CosembleWEBAPP::Application::UNIT_ONE_HUNDRED ).round ]
        }
      }
    end


    engine.rule "guest_trans_fee" do
      forall {
        has :Guest, "trans_fee_markup_amount", :service_fee_markup_amount
        has :Guest, "trans_fee_fixed",         :service_fee_fixed
      }
      make {
        action { |token|
          engine << [ "Guest", "trans_fee", token[:service_fee_markup_amount]+token[:service_fee_fixed] ]
        }
      }
    end

    engine.rule "host_trans_fee" do
      forall {
        has :Host, "trans_fee_markup_amount", :trans_fee_markup_amount
        has :Host, "trans_fee_fixed",         :trans_fee_fixed
      }
      make {
        action { |token|
          engine << [ "Host", "trans_fee", token[:trans_fee_markup_amount]+token[:trans_fee_fixed] ]
        }
      }
    end