[xsd-users] question on optional elements/attributes syntax

[Ballentine, Casey]

Hello,

I've recently upgraded to XSD 4.0.0 from 3.1.0 and I've noticed that the cxx-tree syntax for optional elements/attributes changed. For instance, a required element/attribute would have this call syntax:

MyElementType myElement = myXmlDataPointer->ThisIsMyElement();

Whereas optional elements/attributes needed this syntax:

if (myXmlDataPointer->ThisIsMyElement().present())
{
myElement = myXmlDataPointer->ThisIsMyElement().get();
}
else
{
                myElement = DEFAULT_VALUE;
}

So basically an optional element/attribute didn't have the ThisIsMyElement() direct access method. I found this handy in that if we changed an element from required to optional I could follow the resulting compiler errors and verify that myElement was getting set to a proper default value.

Did this really change from XSD 3.1.0 or am I dense? And is there a way to prevent an optional object from generating a ThisIsMyElement() direct access method?

C++ compiler: g++ (Ubuntu 4.8.4-2ubuntu1~14.04) 4.8.4 (in case that's relevant).

Thanks,
Casey