An enumeration is a selection from a set of options. They are represented as a string matching the same production as a tag, with the additional permission that standard enumerations may be integers.
Each structure type with an enumeration payload also defines specific payload values it permits. These permitted payloads match production stdEnum and should each have a defined URI. Payload values that match production extTag are always permitted in structures with an enumeration payload and have their URI defined by the schema.
Each enumeration value has a distinct meaning as identified by its corresponding URI.
The URI of a given tag in an enumeration payload is determined by the tag itself and by the structure type of the structure it is in the payload of.
The tag HUSB is used in this document to represent two enumeration values. Which one is meant can be identified by the structure type it appears in as follows:
| Containing structure type | Enumeration value identified by tag HUSB |
|---|---|
g7:FAMC-ADOP | g7:enum-ADOP-HUSB |
g7:ROLE | g7:enum-HUSB |
An extension could also place either of these enumeration values in an extension structure type; the extension authors should document which one they permit.
The HUSB tag is also used to identify two different structure types, g7:FAM-HUSB and g7:HUSB.
The URI for the Enum data type is g7:type-Enum.