[xsd-users] Disable Xerces-C Unique Particle Attribution check

[Boris Kolpackov]

Hi Catalin,

Catalin Roman <katalin.roman at gmail.com> writes:

> I am trying to use XSD(xsd-3.2.0-i686-windows) in VS2008, with
> Xerces-C(xerces-c-3.1.0-x86-windows-vc-9.0) to compile a schema that
> violates UPA; the schema fragment that's responsible for this is:
>
> <xs:choice minOccurs="0">
>             <xs:element name="value" type="boolean"/>
>             <xs:element name="value" type="byte"/>
> </xs:choice>

To be precise, this fragment violates the "Consistent Element Declaration"
rule rather than the "Unique Particle Attribution" rule. In XML Schema
elements within the same type with the same name should have the same
type.


> I would like to ask if I can "disable" the UPA check performed by the
> Xerces-C parser and if it's possible, how can I achieve that?

No, unfortunately it is not possible to disable the checking of the 
above fragment.


> Any other hints or workarounds are also most welcomed.

The only way forward that I can think of is to fix the schema. You could
use a single 'value' element whose type is a union of boolean and byte 
to achieve the above behavior in a legal way.

Boris