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>Then you define the constraints at the level of elements and
attributes, not at the level of text nodes.
Currently I have implemented as an attribute. But I require it to be in
CDATA section as the length would be bit more.
regards,
-Ranjan
-----Original Message-----
From: Michael Kay [mailto:mike@saxonica.com]
Sent: Friday, April 22, 2005 4:52 PM
To: Baisak, Ranjan; 'David Carlisle'
Cc: xml-dev@lists.xml.org
Subject: RE: [xml-dev] CDATA section or text node data type
> Well I am using w3c specified schema language.
Then you define the constraints at the level of elements and attributes,
not at the level of text nodes.
Michael Kay
http://www.saxonica.com/
> <![CDATA[aaa]]> does specify whether aaa is a text data or numeric
> data.
> It is imperetive that Schema should provide more control over DTD and
> as a user I need some constraints to be there when I can have some
> data as CDATA or Text node so that I can have the controle of incoming
> data.
> This inturn help me when I am working data base applications and I
> expect that whatever there in CDADA or Text node is a numeric or byte
> etc...
>
>
> regards,
> -Ranjan
>
>
> -----Original Message-----
> From: David Carlisle [mailto:davidc@nag.co.uk]
> Sent: Friday, April 22, 2005 4:29 PM
> To: Baisak, Ranjan
> Cc: xml-dev@lists.xml.org
> Subject: Re: [xml-dev] CDATA section or text node data type
>
>
> Please have a thought. If this feature is already available then
> please
> let me know so that I can implement it.
>
>
> a CDATA section is just a syntactic convenience,
> <x><![CDATA[aaa]]></x> means exactly the same as <x>aaa</x> so schema
> languages do not allow any significance to be placed on CDATA
> sections, just as they do not allow significance to be placed on
> whether " or ' is used to surround an attribute value: <a b="2"/>
> means the same as <a b='2'/>.
>
> sometimes we need some sort
> of constraints to be there to check data type before manipulation.
>
> Most schema languages (other than DTD) allow constraints to be placed
> on text node children of elements (which then apply whether or not the
> author has used the CDATA section syntax) W3C XML Schema, Relax NG, or
> Schematron for example could all specify a constraints of various
> sorts on the content of elements.
>
> If you said what schema language you were using, and what types of
> constraints you wanted to enforce, someone would be able to offer
> advice.
>
>
> David
>
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