Fw: Dynamic stilesheet assignement

Subject: Fw: Dynamic stilesheet assignement
From: "Benoit Cerrina" <benoit.cerrina@xxxxxxxxxxx>
Date: Tue, 17 Oct 2000 21:51:26 +0200
 Hi,
 as far as I no, with straight cocoon it is not possible, however since I
 wanted to do just the same I wrote a new XML producer which you'll find
 included (you'll have to place it in the src/org/apache/cocoon/producer
 directory of your cocoon install then rebuild cocoon and declare it as a
 producer in cocoon.properties)
 I can now associate dinamically the xsl to the xml using the xslURL
 parameter of the producer:
 here is an example form I use for example.
   <form action="/cocoon/xml/meta.xml">
    <input type="hidden" name="producer" value="fileAndXSL"/>
    <input type="text" name="xslURL" value="../xsl/XMLMeta.xsl"/>
   <input type="text" name="URL" value="xml/PRODUCT.metadata"/>
    <input type="submit" value="View Meta"/>
   </form>
 Benoit

PS to get the class you'll need to copy and paste it since my message with
an attachment was bounced

---start java file  ProducerFromFileAndXSL.java--------
/*-- $Id: ProducerFromFile.java,v 1.9 2000/05/06 11:13:53 stefano Exp $ --


============================================================================
                   The Apache Software License, Version 1.1

============================================================================

 Copyright (C) 1999-2000 The Apache Software Foundation. All rights
reserved.

 Redistribution and use in source and binary forms, with or without
modifica-
 tion, are permitted provided that the following conditions are met:

 1. Redistributions of  source code must  retain the above copyright
notice,
    this list of conditions and the following disclaimer.

 2. Redistributions in binary form must reproduce the above copyright
notice,
    this list of conditions and the following disclaimer in the
documentation
    and/or other materials provided with the distribution.

 3. The end-user documentation included with the redistribution, if any,
must
    include  the following  acknowledgment:  "This product includes
software
    developed  by the  Apache Software Foundation
(http://www.apache.org/)."
    Alternately, this  acknowledgment may  appear in the software itself,
if
    and wherever such third-party acknowledgments normally appear.

 4. The names "Cocoon" and  "Apache Software Foundation"  must not be used
to
    endorse  or promote  products derived  from this  software without
prior
    written permission. For written permission, please contact
    apache@xxxxxxxxxxx

 5. Products  derived from this software may not  be called "Apache", nor
may
    "Apache" appear  in their name,  without prior written permission  of
the
    Apache Software Foundation.

 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
WARRANTIES,
 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND
 FITNESS  FOR A PARTICULAR  PURPOSE ARE  DISCLAIMED.  IN NO  EVENT SHALL
THE
 APACHE SOFTWARE  FOUNDATION  OR ITS CONTRIBUTORS  BE LIABLE FOR  ANY
DIRECT,
 INDIRECT, INCIDENTAL, SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL  DAMAGES
(INCLU-
 DING, BUT NOT LIMITED TO, PROCUREMENT  OF SUBSTITUTE GOODS OR SERVICES;
LOSS
 OF USE, DATA, OR  PROFITS; OR BUSINESS  INTERRUPTION)  HOWEVER CAUSED AND
ON
 ANY  THEORY OF LIABILITY,  WHETHER  IN CONTRACT,  STRICT LIABILITY,  OR
TORT
 (INCLUDING  NEGLIGENCE OR  OTHERWISE) ARISING IN  ANY WAY OUT OF THE  USE
OF
 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 This software  consists of voluntary contributions made  by many
individuals
 on  behalf of the Apache Software  Foundation and was  originally created
by
 Stefano Mazzocchi  <stefano@xxxxxxxxxx>. For more  information on the
Apache
 Software Foundation, please see <http://www.apache.org/>.

 */
package org.apache.cocoon.producer;

import java.io.*;
import java.net.*;
import java.util.*;
import org.w3c.dom.*;
import org.xml.sax.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.cocoon.*;
import org.apache.cocoon.framework.*;

/**
 * This class implements the producer interface in order to produce a
document
 * based on its tranlated path.
 *
 * @author <a href="mailto:stefano@xxxxxxxxxx";>Stefano Mazzocchi</a>
 * @version $Revision: 1.9 $ $Date: 2000/05/06 11:13:53 $
 */

public class ProducerFromFileAndXSL extends AbstractProducer implements
Status {

    private Monitor monitor = new Monitor(10);

    public Document getDocument(HttpServletRequest request) throws Exception
{
        String file = request.getParameter("URL");
  if (file == null)
   file = Utils.getBasename(request, this.context);
        this.monitor.watch(Utils.encode(request), new File(file));
  //parse the file into a document
  Document lDoc = parser.parse(new InputSource(file));
  //adds a processing instruction with the appropriate xsl if needed
  ProcessingInstruction lPI =
lDoc.createProcessingInstruction("cocoon-process", "type=\"xslt\"");
  lDoc.appendChild(lPI);
  String lXslUrl = request.getParameter("xslURL");
  if (lXslUrl != null)
   lPI = lDoc.createProcessingInstruction("xml-stylesheet", "href=\"" +
lXslUrl + "\" type=\"text/xsl\"");
  lDoc.appendChild(lPI);
        return lDoc;
    }

    public Reader getStream(HttpServletRequest request) throws Exception {
        throw new Exception("this method should never be called!");
    }

    public String getPath(HttpServletRequest request) {
        return Utils.getBasepath(request, this.context);
    }

    public boolean hasChanged(Object context) {
        return this.monitor.hasChanged(Utils.encode((HttpServletRequest)
context));
    }

    public String getStatus() {
        return "Producer from local file and xsl";
    }
}


------end java file-------------









> ----- Original Message -----
> From: "massimo cravero" <mcravero@xxxxxxxxx>
> To: <XSL-List@xxxxxxxxxxxxxxxx>
> Sent: Friday, October 13, 2000 6:13 PM
> Subject: Dynamic stilesheet assignement
>
>
> > hi.
> >
> > i'm trying to build a publishing system via the cocoon
> > server.
> >
> > i have a number of XML datasheets and XSL
> > stylesheeets: how can i dynamically join them each
> > other ?
> > in other words, how can i dynamically change the
> > assignement
> > <?xml-stylesheet type="text/xsl" href="mysheet.xsl"?>
> > in the XML file ?
> >
> > thanks in advance to everyone.
> >
> >
> >
> > =====
> > massimo cravero
> > mcravero@xxxxxxxxx
> >
> >
> > __________________________________________________
> > Do You Yahoo!?
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> > http://mail.yahoo.com/
> >
> >
> >  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
>


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list


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