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   RE: [xml-dev] XPath 1.5? (was RE: [xml-dev] typing and markup)

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At 10:38 AM 5/7/2002 -0400, Elliotte Rusty Harold wrote:
>At 3:26 PM +0200 5/7/02, Matthew Gertner wrote:
>>Admittedly I am just restating the problem, but I am curious to know why you
>>are so convinced that the data in XML documents are strings that can be
>>translated into other data types when necessary,
>Because an XML document is defined as a finite sequences of characters.

Actually, XML Schema defines value spaces for the various types, and many 
people are doing XML views of persistent data.

>>  and not dates, number, etc.
>>that are serialized as strings when an XML document is instantiated.
>In this case, you have some other data that is not an XML document. This 
>data is then translated into strings which are stored in an XML document. 
>However, not all XML documents are created this way. A general purpose 
>technology like XSLT/XPath that has to be defined for all XML documents 
>cannot rely on characteristics that apply to only some XML documents; e.g. 
>that they were created by converting numbers into strings.

I suspect much of this argument is between people who merely use XML as a 
transport and serialization technology, and those who actually do 
processing of XML that involves some knowledge of the types involved.



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