Re: combine

[Kohsuke KAWAGUCHI <kohsuke.kawaguchi@eng.sun.com>]

> Right.  We could have a restriction on combine="group" that you can't use it
> in a way which makes order significant (eg combining two <element>
> patterns).  On the other hand that would rule out using combine="group" to

Oops, I found that things are not so easy.

<define name="foo">
  <element/>
</define>

<define name="foo" combine="group">
  <attribute/>
</define>

<define name="foo" combine="choice">
  <element/>
</define>

Is still order-dependent.


> patterns).  On the other hand that would rule out using combine="group" to
> provide functionality similar to derivation of complex types by extension in
> XML Schema (adding things on to the end of a content model).

When I first saw combine="group", I felt it a bit asymmetric because it
doesn't allow me to prepend a pattern to an existing pattern.


--
Kohsuke KAWAGUCHI                          +1 650 786 0721
Sun Microsystems                   kohsuke.kawaguchi@eng.sun.com