DFDL 1.0 has the idea of a floating element which when declared in a
sequence is allowed to appear anywhere in the sequence. See if that gets
you what you need. Spec section 14.4.
Regards
Steve Hanson
Architect, IBM Data Format Description Language (DFDL)
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh@uk.ibm.com
tel:+44-1962-815848
From: "Garriss Jr., James P."
To: "dfdl-wg@ogf.org" ,
Date: 01/04/2013 14:55
Subject: [DFDL-WG] IMF Comments
Sent by: dfdl-wg-bounces@ogf.org
Comments can appear anywhere in the value of an email header. The
initiator is an open paren, and the terminator a closed paren. They are
meant only for human readers, thus they can be safely ignored by
processors. These are equivalent:
MIME-Version: 1.0
MIME-Version: 1.0 (produced by MetaSend Vx.x)
MIME-Version: (produced by MetaSend Vx.x) 1.0
MIME-Version: 1.(produced by MetaSend Vx.x)0
I don’t see comments used in too many headers, but they are used
frequently in the Received header:
Received: from e06smtp13.uk.ibm.com (e06smtp13.uk.ibm.com [195.75.94.109])
by
smtpksrv1.mitre.org (Postfix) with ESMTP id 655301F069B for
; Tue, 12 Mar 2013 08:02:00 -0400 (EDT)
How would you handle this in DFDL? Does it have a mechanism for saying,
“This element can appear anywhere and any number of times inside of this
other element?”--
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