Spaulding wrote:
> I have an xsd specified as such:
> 
> <?xml version="1.0" encoding="UTF-8" ?>
> - <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
> elementFormDefault="qualified" attributeFormDefault="unqualified">
> - <xs:element name="REQUEST">
> - <xs:complexType>
> - <xs:all>
>   <xs:element name="FIELD1" type="xs:string" />
>   <xs:element name="FIELD2" type="xs:string" />
>   <xs:element name="FIELD3" type="xs:string" minOccurs="0" />
>   </xs:all>
>   </xs:complexType>
>   </xs:element>
>   </xs:schema>
> 
> I was thinking that this would allow FIELD3 to be optional and that
> FIELD1 and FIELD2 are required.  I use JAXB to unmarshal from an XML
> doc that does not have FIELD1, and it works.  i would have expected an
> exception.  Am i doing this correctly?

In terms of the schema language one FIELD1 child element of the REQUEST 
element is required and a validating parser should flag that as an error 
if there is no such element.
Whether JAXB validates I don't know. You might want to ask in a Java group.

-- 

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/