Annex F (normative) Information Model XML Schema ToC Previous

F.13 DataTypeField ToC Previous Next

A DataTypeField defines an abstract representation of a field within a UADataType that can be used by design tools to automatically create serialization code. The fields in the DataTypeField type are defined in Table F.13.

Table F.13 – DataTypeField

Element Type Description
Name String A name for the field that is unique within the DataTypeDefinition.
SymbolicName String A symbolic name for the field that can be used in autogenerated code.
It should only be specified if the Name cannot be used for this purpose.
Only letters, digits or the underscore (‘_’) are permitted.
DisplayName LocalizedText [] A display name for the field in multiple locales.
DataType NodeId The NodeId of the DataType for the field.
This NodeId can refer to another Node with its own DataTypeDefinition.
This field is not specified for subtypes of Enumeration.
ValueRank Int32 The value rank for the field.
It shall be Scalar (-1) or a fixed rank Array (>=1).
This field is not specified for subtypes of Enumeration.
ArrayDimensions String The maximum length of an array.
This field is a comma separated list of unsigned integer values. The list has a number of elements equal to the ValueRank.
The value is 0 if the maximum is not known for a dimension.
This field is not specified if the ValueRank <= 0.
This field is not specified for subtypes of Enumeration or for DataTypes with the OptionSetValues Property.
MaxStringLength UInt32 The maximum length of a String or ByteString value.
If not known the value is 0.
The value is 0 if the DataType is not String or ByteString.
If the ValueRank > 0 the maximum applies to each element in the array.
This field is not specified for subtypes of Enumeration or for DataTypes with the OptionSetValues Property.
Description LocalizedText [] A description for the field in multiple locales.
Value Int32 The value associated with the field.
This field is only specified for subtypes of Enumeration and OptionSet DataTypes. For OptionSets the value is the number of the bit associated with the field.
IsOptional Boolean The field indicates if a data type field in a structure is optional.
This field is optional. The default value is false.
This field is not specified for subtypes of Enumeration and Union.

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