Schema validation question

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Leonid Shprekher - 09 Oct 2003 15:37 GMT

Question to the Schema pro:

If nillable="False" is default for Schema element, why schema validation of
my XML doesn't fail if I don't provide any value for the tag?

Thanks,

Leonid.

Reply to this Message

Oleg Tkachenko - 09 Oct 2003 16:09 GMT

> Question to the Schema pro:
>
> If nillable="False" is default for Schema element, why schema validation of
> my XML doesn't fail if I don't provide any value for the tag?

Apparently because empty value is valid value for your element.
It's only xsi:nil="true" attribute who defines that element value is null,
actual value has no impact on nillable stuff (but it's constarained by
presence of xsi:nil attribute of course).

Signature

Oleg Tkachenko
http://www.tkachenko.com/blog
Multiconn Technologies, Israel

Reply to this Message

Leonid Shprekher - 09 Oct 2003 16:30 GMT

Ok,

So what is your suggestion, I have to validate XML on Null in some important
tags. I can parse XML and do validation myself, but why do we need Schema?

Looks like you are Russian?

Leonid

> > Question to the Schema pro:
> >
[quoted text clipped - 9 lines]
> http://www.tkachenko.com/blog
> Multiconn Technologies, Israel

Reply to this Message

Oleg Tkachenko - 09 Oct 2003 16:41 GMT

> So what is your suggestion, I have to validate XML on Null in some important
> tags. I can parse XML and do validation myself, but why do we need Schema?

The only way of using nillable schema stuff is to place xsi:nil attribute into
your instance XML. If input XML is out of your control and you need to
validate empty values instead, that's trivial - just define in schema the
element cannot have empty content, that's it, say
<xs:element name="foo">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:minLength value="1"/>
</xs:restriction>
</xs:simpleType>
</xs:element>

> Looks like you are Russian?

Not exactly :)

Signature

Oleg Tkachenko
http://www.tkachenko.com/blog
Multiconn Technologies, Israel

Reply to this Message

Schema validation question

Free Magazines