[xsd-users] vocabulary-specific types for simple elements
Sumant Tambe
sutambe at dre.vanderbilt.edu
Wed Jan 13 10:07:32 EST 2010
Hi Boris,
>> I was wondering if there is a way in xsd (tool) to generate classes that
>> wrap simple content such as <xs:element name="price" type="xs:int" />
>> As far as I know, the parent class of such an element gets a set of
>> overloaded price() methods that essentially return C++ int. Instead, I
>> was thinking of a class named "price".
>
> No, there is no way to do this. It is also not clear what extra
> functionality such a class would have to justify the overhead.
I see a couple of advantages of doing it.
1. The data structure representing information remains abstract behind
the interface of the generated class. That allows easy changes in the
schema without breaking (some part of) the client code. Say for
instance, regular strings to an enumeration of strings.
2. The elements that logically belong to different parts of XML, can be
distinguished at the type level. For instance, if book titles and author
names, both are represented using strings, it is not clear when you see
a string object whether its a title or name. Some extra type-safety can
be achieved if they have their respective classes.
Also, other than extra classes, do you see any other overhead of such an
approach.
Thanks,
Sumant.
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