Definition of the Product

As the primary first step a COOM knowledge base is defined by starting the definition of a product hierarchy. A product hierarchy describes all elements of a product. A typical example is the component-based structure, for which the main components of a product are listed first, which in turn can contain sub-components.

We define the product hierarchy by using the product keyword. For example, a simple bike product can be described/configured by the elements color, withStand (yes/no), and front and rear wheels:

// Product definition of a simple bike.
product {
    Color color
    bool  withStand
    Wheel frontWheel
    Wheel rearWheel
}

We see that the four elements are described by their types (Color, bool, and Wheel) and by their corresponding names color, withStand, frontWheel, and rearWheel.

Comments are introduced by double slashes (//) for single lines and by /* ... */ for multiline comments.