XMLSchema and XML Validation problem

[Robert Ludewig]

This is my XML Schema (Sitemap.xsd) :

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.htw-dresden.de/SitemapNS">
<xs:element name="Sitemap">
<xs:complexType>
<xs:all>
<xs:element name="Page">
<xs:complexType>
<xs:all>
<xs:element minOccurs="1" name="Title" type="xs:normalizedString"/>
<xs:element minOccurs="0" name="Description" type="xs:string"/>
<xs:element minOccurs="0" name="Linklist">
<xs:complexType>
<xs:sequence>
<xs:element name="Link" minOccurs="1" maxOccurs="unbounded">
<xs:complexType>
<xs:attribute name="ID" type="xs:IDREF" use="required"/>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:all>
<xs:attribute name="ID" type="xs:ID" use="required"/>
</xs:complexType>
</xs:element>
</xs:all>
</xs:complexType>
</xs:element>
</xs:schema>

And when I define a new XML file using this xsd it does not Validate:

<Sitemap xmlns="http://www.htw-dresden.de/SitemapNS"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.htw-dresden.de/SitemapNS Sitemap.xsd">
<Page>
</Page>
</Sitemap>

XMLSpy says: unexpected child element: <Page>
MSXML4 says: the content is not valid, expected: <Page>

WHY does that happen ?? Its a namespace problem right ? What am I doing
wrong ?

 

[Richard Tobin]

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.htw-dresden.de/SitemapNS">

Add elementFormDefault="qualified".

-- Richard

 

[Robert Ludewig]

And why ?
I would have expected that if I don't want the namespace specification to be
required, that I have to do it with unqualified.
But it seems its the other way around?

What exactly does that elementFormDefault="qualified" do then?

 

[Richard Tobin]

And why ?

We need an FAQ. This question has been answered many times.

I would have expected that if I don't want the namespace specification to be
required, that I have to do it with unqualified.

Your Sitemap element has xmlns="http://www.htw-dresden.de/SitemapNS",
which makes that be the default namespace, so your unprefixed Page
element is in that namespace.

elementFormDefault="qualified" makes local element declarations apply
to elements in the target namespace (rather than in no namespace), which
is what you want.

Your schema would be right if your document looked like this:

<x:Sitemap xmlns:x="http://www.htw-dresden.de/SitemapNS"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.htw-dresden.de/SitemapNS Sitemap.xsd">
<Page>
</Page>
</x:Sitemap>

(i.e. if Page was in no namespace).

- Richard

 

[Martin Honnen]

And why ?
I would have expected that if I don't want the namespace specification to be
required, that I have to do it with unqualified.
But it seems its the other way around?

What exactly does that elementFormDefault="qualified" do then?

Check the spec, for a start the examples in the primer:
http://www.w3.org/TR/xmlschema-0/#QualLocals