OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help



   Unique XForms form that can ...instance data?

[ Lists Home | Date Index | Thread Index ]

Hey all:
Suppose that in a real use case where an (XML-based) application is already designed and deployed in an industrial environment and I want to design a front-end based on XForms forms.  This application is based on XML Schema using massively the structural change possibilities on XML instances (e.g. <choice> or minOccurs="0" constructs).  This schema cannot be modified, so XForms forms have to be designed to handle the XML instances produced by the application.  As the instances could be very different, it's a very difficult exercise to write corresponding forms.
Let me illustrate the problem with an example.  Given a schema like this :
  <xs:element name="root">
        <xs:element name="optelem" minOccurs="0"/>
          <xs:element name="el1"/>
          <xs:element name="el2"/>
      <xs:attribute name="optattr" type="xs:integer" use="optional"/>
A valid instance could be :
  <i:root optattr="12">

or could be:
or something else very different.
How can I write a unique XForms form that can handle all of these initial instance data?  More precisely, how can a form modify the instance data to add or remove optional elements/attributes, or how to simulate these structural changes?
All my attempts to write XForms compliant forms failed, even using 2 models (one with the app instance, the other with a *working* instance).

t a r i q   a m i n   a b d u r - r a h i m
--  XML Application D e v e l o p e r

--  i am what's next!

Do You Yahoo!?
Sign-up for Video Highlights of 2002 FIFA World Cup


News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 2001 XML.org. This site is hosted by OASIS