W3C home > Mailing lists > Public > www-xml-schema-comments@w3.org > October to December 1999

Re: concrete syntax for derivation

From: <petsa@us.ibm.com>
Date: Mon, 20 Dec 1999 12:52:38 -0500
To: James Clark <jjc@jclark.com>
cc: XML Schema Comments <www-xml-schema-comments@w3.org>
Message-ID: <8525684D.00623242.00@D51MTA03.pok.ibm.com>
The sub-text is that someday we may want to allow types to be derived from
other types by a variety of operations.  Add-at-the-end would be one of
but we may want to allow others such as add-at-start, reorder-contents,
To leave the door open for the syntax specifies both the source type and
operation that creates the new type.

Having said that, I would prefer that
be replaced by

All the best, Ashok

James Clark <jjc@jclark.com> on 12/18/99 01:41:16 AM

To:   XML Schema Comments <www-xml-schema-comments@w3.org>
Subject:  concrete syntax for derivation

I find the current syntax for derivation

  <type name="extendedName" source="personName" derivedBy="extension">

highly cumbersome and unintuitive. Why not the obvious and much simpler
syntax of

  <type name="extendedName" extends="personName">


Received on Monday, 20 December 1999 12:52:58 UTC

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