Re: copy-of too powerful or wrong

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Subject: Re: copy-of too powerful or wrong
From: Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>
Date: Mon, 09 Aug 2004 17:04:37 -0400

S,

Yes, copy-of will copy an entire node subtree. In the case of your template, you are instructing that all node children of the root be copied completely to output.

What you actually want can be accomplished using xsl:copy, which copies only the current node, and not its descendants. Accordingly, having copied, you will use xsl:apply-templates to continue traversing "down" the tree, copying descendants as you go (and matching the templates that say not to copy the descendants you don't want). This is what is done by the "identity template", which you can look up in Google or any reasonably-complete reference to XSLT, and which looks like this (the variant of the moment):

<xsl:template match="node()|@*">
  <xsl:copy>
    <xsl:apply-templates select="@*|node()"/>
  </xsl:copy>
</xsl:template>

So you are correct: xsl:copy-of is both too powerful and wrong. xsl:copy will be just right.

Cheers,
Wendell

At 04:54 PM 8/9/2004, you wrote:

I'd like to be able to do something like this
<xsl:template match="/">
<xsl:copy-of select="@*|node()"/>
</xsl:template>
 <xsl:template match="/chunk/chunk[chunk-meta/title[(text()='Summary')]]"/>  <xsl:template match="/chunk/chunk[chunk-meta/title[(text()='Insights')]]"/>  <xsl:template match="/chunk/chunk[@differentiation='keyterms']"/>  <xsl:template match="/chunk/chunk[@differentiation='review-questions']"/>  <xsl:template match="/chunk/ref-note-list[title/text()='Additional Readings']"/>

Where the first template match copies everything and the additional template matches comment out those specific chunks. It doesn't work - as you could guess. But I do not know why - I am a beginner and copy-of is very powerful - too powerful. I am looking to rebuild the xml (transformed) using copy-of - is that the wrong thing to do? --+--

======================================================================
Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
Mulberry Technologies, Inc.                http://www.mulberrytech.com
17 West Jefferson Street                    Direct Phone: 301/315-9635
Suite 207                                          Phone: 301/315-9631
Rockville, MD  20850                                 Fax: 301/315-8285
----------------------------------------------------------------------
  Mulberry Technologies: A Consultancy Specializing in SGML and XML
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Current Thread
copy-of too powerful or wrong SnHndrc - 9 Aug 2004 21:03:00 -0000 Marty McKeever - 9 Aug 2004 21:12:41 -0000 Wendell Piez - 9 Aug 2004 21:23:43 -0000 <= David Carlisle - 9 Aug 2004 21:26:10 -0000 Jeni Tennison - 9 Aug 2004 21:29:53 -0000

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RE: copy-of too powerful or w, Marty McKeever	Thread	Re: copy-of too powerful or w, David Carlisle
RE: copy-of too powerful or w, Marty McKeever	Date	Re: Substring a Value, Wendell Piez
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