JAXB :customizing a class hierarchy

hi there-

 

I have a schema def with a pretty basic set of elements:

 

<AgencyReg>

   <Agency>

<Service>

   <Trip>

 

from which I wish to have JAXB generate the corresponding Java classes.

 

If I use the jaxb xjc.bat file, how can I tell this batch file (via cmd line or some sort of customization) to create a PARENT class called XData, and to have the classes  AgencyReg and Service inherit from it?

 

thanks,
Cindy