The type substitution is unsupported in the current release of JAXB RI.
It's not like there's anything fundamentally wrong with the type
substitution; it's just that we thought we should deliver something
quickly to the market, and we didn't have time to get the type
substitution done.
regards,
--
Kohsuke KAWAGUCHI 408-276-7063 (x17063)
Sun Microsystems kohsuke.kawaguchi_at_sun.com