Demand

Figure 18 shows the supply side of the <Occupancy> namespace. Through the HierarchyElementReference class, the Supply data class are linked to an identifiable element within the Place hierarchy. The Supply class defines the supply quantity as an integer, relevant for a defined period. If the Supply.startValidUsagePeriod attribute is not set, the SupplyQuantity is considered to be relevant from the present time until the Supply.endValidUsagePeriod date/time. The SupplyViewType attribute enables identification of different perspectives of specifying supply:

- spaceView - means that each space is physically marked and identifiable. - vehicleView - means that vehicle capacity in an area is estimated based on calculating a capacity via a defined method. (e.g., kerb length divided by a length of vehicle, or the holding capacity of a specific parking area). The Distributing Party decides on the appropriate means to calculate the vehicleView (e.g., length of vehicle to use).

The Supply class can be linked to one-to-many identified Spaces whose characteristics can be defined through the Dimensions class which provides maximum useable dimensions for a space.

Demand

Figure 19 - Demand class model