[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

output modified branch - best practice

Subject: output modified branch - best practice
From: "Heiko Niemann" <kontakt@xxxxxxxxxxxxxxxx>
Date: Sun, 20 Jun 2010 16:42:52 +0200
 output modified branch - best practice
Hello,

the sample I will post here is working the way I want. My question will be
about best practices. This arose when I was searching a solution for this
problem.

source:

<root>
  <base>
    <data>
      <first>John</first>
      <last>Doe</last>
      <dob/>
      <zip>90210</zip>
      <phone/>
      <mobile>(999) 484 6584</mobile>
      <email>john@xxxxxxxxx</email>
    </data>
  </base>
  <update>
    <data>
      <dob>1977-12-20</dob>
      <phone>(555) 229 8811</phone>
      <mobile/>
      <email>john@xxxxxxxxxx</email>
    </data>
  </update>
</root>


xslt:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="2.0">
  <xsl:output method="xml" encoding="UTF-8"/>
  <xsl:template match="/root/base/data">
    <xsl:copy>
      <xsl:apply-templates/>
    </xsl:copy>
  </xsl:template>
  <xsl:template match="/root/base/data/*">
    <xsl:variable name="var.update" select="/root/update/data/*[name() =
current()/name()]"/>
    <xsl:choose>
      <xsl:when test="exists($var.update)">
        <xsl:copy-of select="$var.update"/>
      </xsl:when>
      <xsl:otherwise>
        <xsl:copy-of select="."/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>
  <xsl:template match="text()"/>
</xsl:stylesheet>


output:

<data>
  <first>John</first>
  <last>Doe</last>
  <dob>1977-12-20</dob>
  <zip>90210</zip>
  <phone>(555) 229 8811</phone>
  <mobile/>
  <email>john@xxxxxxxxxx</email>
</data>


So base/data and update/data are merged. Each element in base/data is
copied unless the same element exists in update/data; then it will be
overwritten.

Since I just want the modified base/data branch as output I have to get
rid of whatever the built-in template rules produces. After some research
I found that <xsl:template match="text()"/> is the easiest solution. But
in one post the author said that this was not such a good idea.
Unfortunately I  did not bookmark it.

So, is the easy solution a good solution? Is there a best practice to
output a modified branch?

Thanks for your help and suggestions,

Heiko

Current Thread

PURCHASE STYLUS STUDIO ONLINE TODAY!

Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
Email
First Name
Last Name
Company
Subscribe in XML format
RSS 2.0
Atom 0.3
Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.