A practical use case for a fixed ID attribute? from Costello, Roger L. on 2012-12-08 (xmlschema-dev@w3.org from December 2012)

From: Costello, Roger L. <costello@mitre.org>
Date: Sat, 8 Dec 2012 12:56:09 +0000
To: "xmlschema-dev@w3.org" <xmlschema-dev@w3.org>
Message-ID: <B5FEE00B53CF054AA8439027E8FE17751E6BC3DC@IMCMBX04.MITRE.ORG>

Hi Folks,

In XML Schema 1.1 it is possible to declare an attribute of type ID and fix its value. For example:

<attribute name="instructor" type="ID" fixed="Professor-Johnson" />

Yesterday I showed that example to my class and they challenged me on the usefulness of this. 

I could not think of a single practical use case for a fixed ID attribute.

Do you have a practical use case for a fixed ID attribute?

/Roger

Received on Saturday, 8 December 2012 13:01:48 UTC