Re: [xml-dev] Type substitution vs. element substitution (akasubstitutio

[Farrukh Najmi <farrukh@wellfleetsoftware.com>]

Michael Kay wrote:
>> I would like to support variable content in certain elements 
>> of my schema based on the elements belonging to a common type 
>> hierarchy. I want to make sure that the approach I take is:
>>
>>     
...
>>     * Well suited for processing instance documents by XSLT such that
>>       adding new types to the variable content hierarchy does not
>>       require modifying the XSLT for processing the common elements and
>>       attributes of the variable content base type
>>
>>     
> XSLT 2.0 with schema-awareness can handle both type hierarchies and
> substitution groups. For example you can match all elements in the
> substitution group of event using
>
> <xsl:template match="schema-element(event)">
>
> and you can match all elements of type event-type using
>
> <xsl:template match="element(*, event-type)">
>
> and of course in both cases you can match any name at any level of the
> hierarchy.
>   

On XSLT support... Am I correct that element substitution will not work 
well unless XSLT processor is schema aware but type substitution will? 
AFIK, there are *NO* open source, royalty free schema aware XSLT 
processors available. It seems that this would make type substitution a 
better fit for open source, royalty free non-schema-aware XSLT 
processors available.

-- 
Regards,
Farrukh Najmi

Web: http://www.wellfleetsoftware.com