RE: XSLT 2.0 and implementation of fn:idref in Saxon 7

Rather too subtle for me.
  This appears to me to be a move away from 'simple' DTD based XML,
   to an xsd model of ID+IDREF?

   What about operating on a DTD based valid instance which has
   idrefs and id's correctly defined in the DTD?

   Ignored I guess?

    Another trip wire for the unwary?

regards DaveP

    # Did I misunterstand the meaning of the fn:idref (Finds 
    the elements that # link to the element with a given ID 
    value i.e. This function allows # reverse navigation from 
    IDs to IDREFs.) ?
    
    
    Yes, you misunderstood it. The spec says: A node references 
    an ID value if
    it is an element or attribute node whose type is xs:IDREF 
    or xs:IDREFS. So
    if you have an attribute of type xs:IDREFS, then the 
    idref() function will
    return that attribute, not the element containing it.
    
    The reason for this is that you can have several IDREF 
    attributes on an
    element, e.g.
    
    <person id="id005" father="id001" mother="id002"/>
    
    You want to know not only that person id005 has a reference 
    to id001, but
    which attribute contains this reference. You can always get 
    the element node
    if you want, just use idref($x)/..
    
    Michael Kay
    
    
     XSL-List info and archive:  
    http://www.mulberrytech.com/xsl/xsl-list
    

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