Re: [xsl] url rewriting

[Joerg Heinicke <joerg.heinicke@xxxxxx>]

We solve this in our applications via a named template:

<a>
  <xsl:attribute name="href">
    <xsl:call-template name="url-rewriting">
      <xsl:with-param name="url" select="'http://www.foo.bar'"/>
    </xsl:call-template>
  </xsl:attribute>
</a>

---

<xsl:template name="url-rewriting">
  <xsl:param name="url" select="''"/>
  <xsl:choose>
    <xsl:when test="contains($url, '?')">
      <xsl:value-of select="substring-before($url, '?')"/>
      <xsl:text>;jsessionid=</xsl:text>
      <xsl:value-of select="$sessionid"/>
      <xsl:value-of select="substring-after($url, '?')"/>
    </xsl:when>
    <xsl:when test="contains($url, '#')">
      <xsl:value-of select="substring-before($url, '#')"/>
      <xsl:text>;jsessionid=</xsl:text>
      <xsl:value-of select="$sessionid"/>
      <xsl:value-of select="substring-after($url, '#')"/>
    </xsl:when>
    <xsl:otherwise>
      <xsl:value-of select="$url"/>
      <xsl:text>;jsessionid=</xsl:text>
      <xsl:value-of select="$sessionid"/>
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

This template adds the sessionid, which is passed as global parameter to 
the stylesheet, to the url. It's simple and reusable code and you can 
catch such things like links in javascript.

Another solution is a two step process. We set the attributes in a 
different namespace and in a second transformation step the sessionid is 
added:

<a url:href="http://www.foo.bar"/>

----

<xsl:template match="url:href">
  <!-- similar to the above one -->
</xsl:template>

Regards,

Joerg


Madhavi Thottempudi wrote:
> Hi there!
> I have realised that the file U have given me is actually for "encoding 
> an url" but not for re-writing.
> Sorry for any confusion. In Java, the method in the Servlet API for 
> doing URL rewriting for session management is called encodeURL().
> And I am looking for such session tracking/management in WAP devices.
>
> My problem is, In wap devices it's creating a new session for every 
> request, which means U get a new session id every time.
> This makes the application to forget who the user is in his next request 
> itself.
>
> I read somewhere that I can use the hidden form fields to exchange the 
> session ids between different requests. But there was not much info there,
> so i din't get any clear idea on how I can implement it.
> Any more ideas on this??
>
> Any suggestions are greatly appreciated.
> best regards,
> Madhavi
>
>
>
>
> At 17:18 28/11/2002 +0100, you wrote:
>
> > sorry, there is no such function.
> > But there is  a Java extension,
> > call (dependent to your product ) java from your stylesheet.
> > Xalan http://xml.apache.org/xalan-j/extensions.html#java-namespace and
> > Saxon
> > production
> > http://saxon.sourceforge.net/saxon6.5.2/extensibility.html
> > have a convenience approach.
> >
> > HTH
> > mfh
> >
> >
> > >>> madhavi@xxxxxxxxxxxxxxx 28.11.2002  16.41 Uhr >>>
> > Hi there!
> > I am familiar with url rewriting in java using response.encodeURL(...)
> > Can someone tell me how I can do that in xsl. I mean, is there a similar
> > function to do that??
> > If not, what is the alternative that I can follow to maintain session
> > tracking when cookies are disabled or
> > not used (like WAP client).
> > Any suggestions are greatly appreciated.
> > best regards,
> > Madhavi



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