RE: [xsl] DOM and XPath slows down the

[Khurram Chaudhry <khurram_22 at yahoo dot com>]

Hi,
Products I am using?
 not many.  Am using XPath with DOM, using a GUI using
java swing on a windows platform.

The performance doesnot slowdown linearly.  Its rather
exponential.

Any ideas?

/Khurram


--- XSL-List Digest
<owner-xsl-list-digest@lists.mulberrytech.com> wrote:
> XSL-List Digest      Tuesday, December 18 2001     
> Volume 03 : Number 1340
> 
> 
> 
> In this issue:
> 
>      RE: [xsl] Tree Fragment - How do I test it AND
> output it?
>      RE: [xsl] DOM and XPath slows down the
> application
>      Re: [xsl] How do I compare all similar type
> nodes?
>      Re: [xsl] ampersand character in xsl attribute?
>      RE: [xsl] Tree Fragment - How do I test it AND
> output it?
>      RE: [xsl] General Searching query
>      RE: [xsl] ampersand character in xsl attribute?
>      RE: [xsl] How do I compare all similar type
> nodes?
>      Re: [xsl] How do I compare all similar type
> nodes?
> 
>
----------------------------------------------------------------------
> 
> Date: Tue, 18 Dec 2001 08:27:23 -0000
> From: "Chris Bayes" <chris@bayes.co.uk>
> Subject: RE: [xsl] Tree Fragment - How do I test it
> AND output it?
> 
> David,
> Not sure what you mean (it's early). You can't do
> both. Well you can but
> you can't recurse returning a value to the calling
> template and output
> nodes to the result tree at the same time. Here are
> a few examples that
> show a few things you can do.
> 
> <?xml version="1.0" ?>
> <values a="3" b="5">
> </values>
> 
> 
> <?xml version="1.0"?>
> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> xmlns:msxsl="urn:schemas-microsoft-com:xslt"
> extension-element-prefixes="msxsl"
> >
> 	<xsl:template match="/values">
> 		<xsl:variable name="resultFromTemplateValue">
>             <xsl:call-template
> name="namedTemplateValue"/>
>         </xsl:variable>
> 		<xsl:variable name="resultFromTemplateRtf">
>             <xsl:call-template
> name="namedTemplateRtf"/>
>         </xsl:variable>
> 		<svg> ... here is some stuff
> 	         I actually want to output, because I'm
> drawing svg.
> 	         <g><xsl:value-of
> select="$resultFromTemplateValue"/></g>
> 	         <g><xsl:value-of
> select="$resultFromTemplateRtf"/></g>
> 	         <g><xsl:call-template
> name="namedTemplateValue"/></g>
> 	         <g><xsl:call-template
> name="namedTemplateRtf"/></g>
> 	    	 <g>A Result <xsl:value-of
> select="msxsl:node-set($resultFromTemplateRtf)/a *
> msxsl:node-set($resultFromTemplateRtf)/b"/></g>
> 	    </svg>
> 	</xsl:template>
> 	
> 	<xsl:template name="namedTemplateValue">
> 		<xsl:variable name="resultFromTemplate">
> 		  <!--you would call the template again here-->
>               <xsl:value-of select="@a * @b" />
>             </xsl:variable> 
>          <xsl:if test="$resultFromTemplate !=
> 0"><g>[Result !=
> 0]</g></xsl:if>
>     	   <xsl:value-of select="$resultFromTemplate"/>
> 	</xsl:template>
> 	
> 	<xsl:template name="namedTemplateRtf">
> 		<xsl:variable name="resultFromTemplate">
>               <!--you would call the template again
> here-->
> 		  <a><xsl:value-of select="@a" /></a>
>               <b><xsl:value-of select="@b" /></b>
>             </xsl:variable> 
>             <xsl:if
> test="msxsl:node-set($resultFromTemplate)/a *
> msxsl:node-set($resultFromTemplate)/b !=
> 0"><g>[Result !=
> 0]</g></xsl:if>
>     	      <xsl:copy-of
> select="$resultFromTemplate"/>
> 	</xsl:template>
> </xsl:stylesheet>
> 
> Produces
> 
> <?xml version="1.0" encoding="UTF-16" ?> 
> <svg>
>   ... here is some stuff I actually want to output,
> because I'm drawing
> svg. 
>   <g>[Result != 0]15</g> 
>   <g>[Result != 0]35</g> 
>   <g>
>       <g>[Result != 0]</g> 
>       15 
>   </g>
>   <g>
>       <g>[Result != 0]</g> 
>       <a>3</a> 
>       <b>5</b> 
>   </g>
>   <g>A Result 15</g>
> </svg>
> 
> Ciao Chris
> 
> XML/XSL Portal
> http://www.bayes.co.uk/xml
> 
> 
> > -----Original Message-----
> > From: owner-xsl-list@lists.mulberrytech.com 
> > [mailto:owner-xsl-list@lists.mulberrytech.com] On
> Behalf Of 
> > David Penton
> > Sent: 18 December 2001 05:08
> > To: xsl-list@lists.mulberrytech.com
> > Subject: [xsl] Tree Fragment - How do I test it
> AND output it?
> > 
> > 
> > How do I both test the "return" value from a
> template, and 
> > output some of the result nodes?  I have written a
> recursive 
> > template that is intended to "draw" some xml as
> svg.  The 
> > template must do some calculations about the depth
> of the 
> > input xml, and about its "width" (i.e. how many
> children a 
> > particular node has.  My problem is that I do not
> know how to 
> > both get a "return" value from a template that I
> can test 
> > (i.e. treating the named template like a kind of
> function), 
> > and also get output from it:
> > 
> > Roughly, I want to do this:
> > 
> > <xsl:template name="namedTemplate">
> >     <svg> ... here is some stuff
> >          I actually want to output, because I'm
> drawing svg.
> >     </svg>
> > 
> >    <!--
> >         but I need to compute a value via a
> recursive call
> >         to this same template:
> >     -->
> > 
> >         <xsl:variable name="resultFromTemplate">
> >             <xsl:call-template
> name="namedTemplate">
> >         </xsl:variable>
> > 
> >         <!-- and use the "returned" value: -->
> > 
> >         <xsl:if test="$resultFromTemplate != 0">
> ...</xsl:if>
> > 
> >    <!--
> >         Here I'll "return" a value computed in
> this
> >         named template, to control processing in
> the calling
> >         template (i.e. the earlier instance of
> this same one):
> >     -->
> > 
> >     <xsl:value-of
> select="$somethingCalculatedHere"/>
> > 
> > </xsl:template>
> > 
> > 
> > Is there a way to do this?  I suppose, to get at
> the results, 
> 
=== message truncated ===


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