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RE: Challenge

• To: "'Mark Seaborne'" <m_seaborne@m...>,<xml-dev@l...>
• Subject: RE: Challenge
• From: "Didier PH Martin" <martind@n...>
• Date: Thu, 6 Nov 2003 13:43:32 -0500
• Importance: Normal
• In-reply-to: <BBCF1264.F19%m_seaborne@m...>

Hi Mark,

The good point about your post and the challenge is that it made me
re-discover XForm. IN fact I re-discovered why I need XForm instead of
simply the XML document, an XSLT stylesheet and a bit of prototype based
programming (ref: http://en.wikipedia.org/wiki/Prototype_based). In fact the
problem occurred when I tried to bind a particular element from the source
XML document to an XHTML element; I am not able with XSLT 1.0 to obtain the
XPath expression of a node. So it seems that I need to do it by hand and
define it somewhere. This is precisely the kind of functionality offered by
XForms :-)

By the way, I may be wrong but in the XForms example you provided could the
binding be as follows: 
<xforms:model>
        <xforms:submission id="submit" 
                            xforms:replace="all"
                            xforms:action="http://mydomain.com/MyStorage"
                            xforms:method="PUT"/>
     <xforms:instance id="theChallenge">
          <demo xmlns="">
             <version/>
             <author>    
                <name/>
                <email/>
              </author>
              <description/>
           </demo>
      </xforms:instance>
      <xforms:bind id="version" nodeset="//version" constraint=". = '1.0'"/>
      <xforms:bind id="name" nodeset="//author/name"/>
      <xforms:bind id="email" nodeset="//author/email"/>
      <xforms:bind id="description" nodeset="//description"/>
</xforms:model>

In which each XML element is referred by an XPath 1.0 expression and I need
to include a "bind" attribute to each XHTML element used to input data. For
instance, the XHTML element used to input the <version> element will include
the "bind" attribute as follow:
 <input bind="version" type="text" name="version" size="20"/>
 (no <label> element, this is an XHTML element)
In this last case, the "bind" is redundant with the "name" attribute and I
guess that the "bind" attribute can be omitted and replaced by the
functionally equivalent "name" attribute. Anyway, it could be useful to
trace back the binding "explicitely".

I can write this whole XForms definition differently as follow:
xforms:model>
        <xforms:submission id="submit" 
                            xforms:replace="all"
                            xforms:action="http://mydomain.com/MyStorage"
                            xforms:method="PUT"/>
     <xforms:instance src=http://myDomain.com/theChallenge.xml" />
                            .....
                            .....
     <input ref="//version" type="text" name="version" size="20"/>

Cheers
Didier PH Martin
http://didier-martin.com

• Follow-Ups:
  • Re: Challenge
    • From: "Thomas B. Passin" <tpassin@c...>
  • Re: Challenge
    • From: Mark Seaborne <m_seaborne@m...>
  • Re: Challenge
    • From: "Jeff Greif" <jgreif@a...>

• References:
  • Re: Challenge
    • From: Mark Seaborne <m_seaborne@m...>

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