NullableVolume

Overview

Abstract data type

NullableVolume is a simple physical quantity type for the dimension L³. NullableVolume is abstract and has two concrete subtypes:

• a Volume is an actual value for a physical quantity with a numerical value and a unit of measurement;

• a NullVolume is a null value that explicitly indicates the absence of an actual physical quantity.

Subtypes

• NullVolume

• Volume

Implementation in Proteus Schema

All data attributes with type NullableVolume are implemented as DEXPI generic attributes for physical quantities.

Example

See the examples for Volume and NullVolume.