URIResolvers base parameter with xsltc and cascaded imports 2006-08-14 - By Timothy Jones
Guten Tag, Holger!
In my app, I have implemented a short URIResolver anonymous class that
decides, depending on a configuration variable, to open xsl:include'd
stylesheets from either Class.getResourceAsStream or
URLConnection.getOutputStream.
But in my application, I have one central stylesheet that is included
from many others, but it is only one level deep. That is why I didn't
reply the first time you posted.
The processor is obviously keeping a proper stack somewhere inside, but
the difficulty seems to be that from within the URIResolver interface,
you are only given access to the base (bottom of the stack) and the
current (the top of the stack). With only two levels of inclusion, this
is sufficient, but with three or more levels, you cannot see the middle
elements. Is this a decent restatement of the problem?
I can see where it would be nice to have access to the stack that
org.apache.xalan.processor.ProcessorInclude.startElement has access to
(StylesheetHandler.popStylesheet() and pushStylesheet()), but I have no
idea if this is even a good direction to go towards, let alone the best
way to expose it (and of course, changing a public interface like
URIResolver would be pretty disruptive).
I wish this post were more helpful. But I am just an xalan user, too,
not a developer.
tlj
-----Original Message-----
From: Holger Dehnhardt [mailto:dehnhardt@(protected)]
Sent: Monday, August 14, 2006 9:29 AM
To: xalan-j-users@(protected)
Subject: Re: URIResolvers base parameter with xsltc and cascaded imports
Hello!
Sorry for asking again, but I really need some advice with the problem
described below.
Is anyone here who has written an URIResolver or can help in any way, or
should I ask on the developers list?
Thanks Holger
Am Montag, 24. Juli 2006 17:26 schrieb Holger Dehnhardt:
> Hello,
>
> I'm trying to write my own URIResolver to keep track of changes in
imported
> stylesheets when compiling the main stylesheet.
> Lets have this layout
>
> 1) http://localhost/main.xsl includes layouts/heads.xsl
> 2) heads.xsl includes ../helpers/someFunctions.xsl
> 3) http://localhost/main.xsl includes layouts/footers.xsl
>
> The interface method "resolve" in my uri-resolver is called three
times
> with the following parameters:
>
> 1) href=layouts/heads.xsl base=http://localhost/main.xsl
> 2) href=../helpers/someFunctions.xsl base=http://localhost/main.xsl
> 3) href=layouts/footers.xsl base=http://localhost/main.xsl
>
> even if the file is included from another stylesheet like 2), the base
does
> not change.
> Storing the base is no solution,
> in 1) the base would be http://localhost/layouts/heads.xsl
> but in 2) it would be http://localhost/helpers/someFunctions.xsl
> and 3) would fail.
>
> Is this expected behaviour and if so, how can I manually keep track of
the
> base?
>
> Thanks Holger
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