David Norman wrote:

> How can I create an xml schema where both of the following documents
> are valid?
> 
>   <theElement>
>     <child>some text</child>
>   </theElement>
> 
> and
> 
>   <theElement>1234</theElement>
> 
> Basically, <theElement> should either contain a single element <child>
> of a specified type or an integer.


If you use

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
   version="1.0">

<xs:element name="root">
   <xs:complexType>
     <xs:sequence>
       <xs:element ref="theElement" maxOccurs="unbounded" />
     </xs:sequence>
   </xs:complexType>
</xs:element>

<xs:element name="theElement">
   <xs:complexType mixed="true">
     <xs:sequence>
       <xs:element name="child" type="xs:string" minOccurs="0" />
     </xs:sequence>
   </xs:complexType>
</xs:element>

</xs:schema>

that is you specify the element to have a complex type where mixed 
content is allowed then the following validates:

<?xml version="1.0" encoding="UTF-8"?>
<root
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:noNamespaceSchemaLocation="test2004073101Xsd.xml">
   <theElement>
     <child>some text</child>
   </theElement>
   <theElement>1234</theElement>
</root>

However the schema also allows a <theElement> as follows
   <theElement>1234<child>Kibology</child>1234</theElement>

If you want to allow either the simple content of type integer or a 
complex content of exactly one child element you would need to have a 
union of both types however I think a union is only possible for simple 
types.



-- 

	Martin Honnen
	http://JavaScript.FAQTs.com/