NullableInteger

Overview

Abstract data type

An integer number, or a null value. NullableInteger is abstract and has two concrete subtypes:

• an Integer is an actual value for an integer number;

• a NullInteger is a null value that explicitly indicates the absence of an integer number.

Subtypes

• Integer

• NullInteger

Implementation in Proteus Schema

The Proteus Schema implementation of NullableInteger depends on the Proteus Schema implementations of the data attributes with type NullableInteger.

• NullableInteger is the type of the Value attribute of CustomIntegerAttribute. CustomIntegerAttribute is implemented as a DEXPI custom generic attribute.

• All other data attributes with type NullableInteger are implemented as DEXPI generic attributes. For example, see the NumberOfPackings attribute of ColumnPackingsArrangement.