RE: [xml-dev] Validation of missing elements in xml:

[Eric van der Vlist <vdv@dyomedea.com>]

Le lundi 03 avril 2006 à 16:26 +0100, Michael Kay a écrit :
> With a DTD, there are very few ways to constrain the textual content of an
> element (you can constrain it to be EMPTY, but not to be non-empty).
> 
> In XML Schema, you can declare the element to be of type my:non-empty-string
> where my:non-empty-string is a simple type derived from xs:string using the
> facet <minLength value="1"/>

True, but that depends what you call "empty"...

Deriving from xs:string won't catch cases where you only have
whitespaces such as;

<Person>
        <name>
	</name>
        <email>
		aaa.bbb@xxx.com
	</email>
</Person>

If this should be considered invalid (which happens to be consistent
with the behavior of other datatypes), you should derive form xs:token
instead of xs:string...

Eric (caught on one of his most frequent rants again)

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Eric van der Vlist       http://xmlfr.org            http://dyomedea.com
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