Extending a noun
There are two methods for adding more information to the noun. The simplest method is to leverage the UserData extension points that the component nouns provide. The alternative is to take advantage of the overlay methodology. Overlay extensions allow users to have their extensions appear within the OAGIS or WebSphere Commerce complex types. In order to add elements, a user must extend the OAGIS or WebSphere Commerce complex types within their own namespace. By doing this, it is possible for users to enforce additional restrictions or add additional elements to the OAGIS or WebSphere Commerce complex types.
Procedure
Results
Note: Since you own all the new data objects you define, any object
that uses or extends common objects should be put under your namespace. That
is, you should not add new datatypes to the
Common
and Identifier
type
XSDs. While extending may seem simpler, it can result in future
problems when trying to reuse the java objects across nouns.