[xsd-users] XSD::choice

[Boris Kolpackov]

Hi Shiva,

Balasubramanyam, Shivakumar <sbalasub at qualcomm.com> writes:

> I am looking for documentation or examples that shows the usage of
> xs:choice type.

As you have mentioned below, xs:choice itself does not have a
representation in the generated code. Instead, elements inside
choice are marked as optional.


> I have a choice type of two elements; looking at the generated code this
> is no different than two optional elements.
>
> If schema validation is turned off, does code synthesis allow both types
> to be populated?

Yes. The generated code contains only a minimal amount of checks that
make sure the resulting object model is consistent (that is, your
application won't crash when you try to access it).


> Or my question is, whose job is it to validate that only one of these
> types need to be populated.

In the C++/Tree mapping, if your XML documents may be invalid, you need
to turn on XML Schema validation.

We are also working on a new hybrid mapping that will be similar to
C++/Tree and will have XML Schema validation implemented in the
generated code.


Boris