site ShoppingList
    origin:                     model.dbquity.com/examples
    version:                    1.0.0
    area Setup
        importance:             additional
        entity Unit
            collection:         Units
            text Name
                importance:     promoted
            identity:           Name
            text Description
                multiline
            decimal DefaultAmount
        entity Item
            collection:         Items
            text Name
                importance:     promoted
            identity:           Name
            text Description
                multiline
            decimal DefaultAmount
                default:        DefaultUnit.DefaultAmount
            link DefaultUnit
                entity:         Unit
    area Shopping
        entity List
            importance:         promoted
            collection:         Lists
            decimal Progress
                percent
                expression:
                    if (n: (tobuy: List@ToBuy).count()) then
                        (100 * tobuy.count(Fulfillment >= Amount) / n)
        association ToBuy
            end List
            end Item
                multiplicity:   1..*
            decimal Amount
                default:        Item.DefaultAmount
            link Unit
                default:        Item.DefaultUnit
            decimal Fulfillment