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RE: Using output URI resolver within a servlet

2004-04-12 14:55:22
Using IFRAME implies you have multiple HTML documents with different URIs.
You can't (as far as I know) deliver multiple HTML documents with different
URIs in response to a single HTTP request. I may have misunderstood what you
are attempting, but it sounds as if this is what you are trying to do.

Michael Kay 

-----Original Message-----
From: Anita Lund [mailto:anita(_dot_)lund(_at_)enst(_dot_)fr] 
Sent: 12 April 2004 14:28
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: RE: [xsl] Using output URI resolver within a servlet


Thanks very much for your reply.

I agree that running XSLT/frame is the most straight-forward 
way to go, but
that depends on submitting one HTTP request/frame, as you 
point out in your
message.

However, my problem is that my HTTP request returns an XML 
stream which
contains 1-N different components that the XSLT needs to 
splitt into as many
iframes.  I have this working using MSXML + JavaScript in the 
browser, but
was hoping that I could move the transformation to the server 
side by using
Saxon and xsl:result-document.

Had also some wild dreams about being able to forward the secondary
documents to the corresponding iframes (i.e. using an Emitter 
class) in
order to bypass the need to store the files on disk, which I 
guess is a bit
far-fetched in the context of servlets and HTTP requests...

So am I trying to do the impossible, or just the unwise?
Many thanks again,

Anita Lund


-----Original Message-----
From: Michael Kay [mailto:mhk(_at_)mhk(_dot_)me(_dot_)uk]
Sent: Monday, April 12, 2004 2:55 PM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: RE: [xsl] Using output URI resolver within a servlet


I'm not sure if this is the right way to go about this 
problem. The browser
will submit one HTTP request for each frame. I would normally 
be inclined to
run one XSLT transformation in response to each request from 
the browser,
generating the contents of that frame. The alternative, of 
generating all
the frames during one transformation, and then presumably keeping the
generated document somewhere (memory? disk?) until the 
browser requests it,
seems intrinsically more difficult to manage. Apart from 
anything else, it's
hard to know when to delete the documents to free up resources.

Michael Kay

-----Original Message-----
From: Anita Lund [mailto:anita(_dot_)lund(_at_)enst(_dot_)fr]
Sent: 12 April 2004 11:40
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Using output URI resolver within a servlet

Hi,

I am trying to change the SaxonServlet so that it can handle
a stylesheet
creating multiple output documents using xsl:result-document.
 I am using
Saxon7-9-1 running on Windows2000, using tomcat 4.1 as
servlet container.

My goal is to return the main output directly to the browser via
ServletOutputStream.
The main output includes several iframes, which refer to HTML
files written
as secondary output documents during the XSL transformation.

Currently, all output from the transformation (including
xsl:result-document) is returned to the browser and no files
are generated
on the server.

As far as I understand the problem has something to do with the URI
resolver/systemId of the output stream.

I have tried to set the systemId on the result object, and am
currently
trying to get the servlet to work using the
UserOutputResolver from the Trax
examples, without much luck ;)

The href in xsl:result-document contains an absolute URI on 
the form:
file:///localhost:8080/{$path}/{$filename}.html

Has anyone tried this before with success?

Many thanks for your help in advance!
Anita Lund










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