NullableLength

Overview

Abstract data type

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

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

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

Subtypes

• Length

• NullLength

Implementation in Proteus Schema

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

Example

See the examples for Length and NullLength.