Re: [xml-dev] Multiple include

[ht@cogsci.ed.ac.uk (Henry S. Thompson)]

"PHDB _" <phdb2000@hotmail.com> writes:

> Hi !
> 
> I have a little question about multiple "include" in XML Schema.
> Is it a problem if I have the following including schema ?
> 
>        |-B.xsd<--G.xsd
>        |
>        |-C.xsd<--G.xsd
>        |
> A.xsd<---D.xsd<--G.xsd
>        |
>        |-D.xsd<--G.xsd
> 
> i.e. if G.xsd is included several times indirectly in A.xsd,

The W3C XML Schema REC explicitly allows processors to optimise this
case and only process G.xsd once.


> does it cost time at parsing or is it well handled by Xerces ?

That's a question for Xerces implementors -- XSV only processes it
once.

ht
-- 
  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                      Half-time member of W3C Team
     2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
	    Fax: (44) 131 650-4587, e-mail: ht@cogsci.ed.ac.uk
		     URL: http://www.ltg.ed.ac.uk/~ht/
 [mail really from me _always_ has this .sig -- mail without it is forged spam]