[relax-ng-comment] Re: recursive inlusion

[Kohsuke KAWAGUCHI <kk@kohsuke.org>]

> I am having trouble figuring out how to handle a problem I have with recursive
> inclusion. I want to be able to validate:
> 
> <abc>This is a <strong><em>sentence</em></strong>.</abc>
> 
> I have broken up all of my elements into individual .rng files to ease my
> writing of a schema editor. I want to make it easy for a user to modify their
> schema in small chunks.
> 
> When I try the two below I get a recursive inclusion error. Is it a bad strategy
> to break all the elements up like this? Is there a valid way to handle this
> while still using externalRef's?

What you can do is to define a hub module:

<grammar>
  <start>
    ...
  </start>
  
  <define name="strong">
    <externalRef href="strong.rng"/>
  </define>
  
  <define name="em">
    <externalRef href="em.rng"/>
  </define>
  
  ...
</grammar>

and inside "strong.rng", change <externalRef href="em.rng" /> to <ref
name="em"/>


Or you could write

<grammar>
  <include href="strong.rng"/>
  <include href="em.rng"/>
  ...
  
  <start>
    ...
  </start>
</grammar>

and change your em.rng to

<grammar>
  <define name="strong">
    <element name="strong">
      ...
         <ref name="em"/>


regards,
--
Kohsuke KAWAGUCHI
Sun Microsystems                   kohsuke.kawaguchi@sun.com