XSLT: iterating all child elements and accessing homonymous childrenin sibling elements

[Gerald Aichholzer]

Hello NG,

I have the following XML (simplified) having a variable
number of v-elements:

<record>
<field name="parameter ">
<v0>paramname 0</v0>
<v1>paramname 1</v1>
<v2>paramname 2</v2>
</field>
<field name="parameter value">
<v0>paramvalue0 </v0>
<v1>paramvalue1 </v1>
<v2>paramvalue2 </v2>
</field>
<field name="parameter unit">
<v0>paramunit 0</v0>
<v1>paramunit 1</v1>
<v2>paramunit 2</v2>
</field>
<record>

.... and would like to create the following target XML:

<record>
<field name="paramname 0" value="paramval ue0" unit="paramunit 0"/>
<field name="paramname 1" value="paramval ue1" unit="paramunit 1"/>
<field name="paramname 2" value="paramval ue2" unit="paramunit 2"/>
</record>

I'm working with an identity transformation and the following
templates:

<xsl:template match="record/field[@name='paramete r']">
<!-- (*) -->
</xsl:template>

<xsl:template match="record/field[@name='paramete rvalue']"/>
<xsl:template match="record/field[@name='paramete runit']"/>

My problem is the place marked with (*):

How can I iterate over all v elements and access the homo-
nymous child in the elements for the parameter values and
units?

thanx in advance and kind regards,
Gerald

[Joris Gillis]

On Tue, 27 Jun 2006 11:11:13 +0200, Gerald Aichholzer
<ge************ ***@gmx.net> wrote:

How can I iterate over all v elements and access the homo-
nymous child in the elements for the parameter values and
units?

As simple Xpath query might do the trick, but - for performance - using a
key sounds a beter idea. Example:

<?xml version='1.0' encoding='utf-8' ?>
<xsl:styleshe et xmlns:xsl="http ://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="xml" indent="yes"/>

<xsl:key name="v" match="record/field/*[starts-with(local-name(),'v')]"
use="local-name()"/>

<xsl:template match="record/field[@name='paramete r']">
<xsl:for-each select="*[starts-with(local-name(),'v')]">
<field name="{.}"
value="{key('v' ,local-name())[../@name='paramete rvalue']}"
unit="{key('v', local-name())[../@name='paramete runit']}"/>
</xsl:for-each>
</xsl:template>

<xsl:template match="record/field[@name='paramete rvalue']"/>
<xsl:template match="record/field[@name='paramete runit']"/>

</xsl:stylesheet>

regards,
--
Joris Gillis (http://users.telenet.be/root-jg/me.html)
«Εν οίδα ότι ουδÎ*ν οίδα» - ΣωκÏ�Î±Ï„Î·Ï ‚

[Gerald Aichholzer]

Hi Joris,

Joris Gillis wrote:

On Tue, 27 Jun 2006 11:11:13 +0200, Gerald Aichholzer
<ge************ ***@gmx.net> wrote:

How can I iterate over all v elements and access the homo-
nymous child in the elements for the parameter values and
units?

As simple Xpath query might do the trick, but - for performance - using
a key sounds a beter idea. Example:

[snip]

<xsl:key name="v" match="record/field/*[starts-with(local-name(),'v')]"
use="local-name()"/>

<xsl:template match="record/field[@name='paramete r']">
<xsl:for-each select="*[starts-with(local-name(),'v')]">
<field name="{.}"
value="{key('v' ,local-name())[../@name='paramete rvalue']}"
unit="{key('v', local-name())[../@name='paramete runit']}"/>
</xsl:for-each>
</xsl:template>

<xsl:template match="record/field[@name='paramete rvalue']"/>
<xsl:template match="record/field[@name='paramete runit']"/>

[snip]

thanx a lot for your solution. In the meantime I have come up
against the following solution:

<xsl:template match="record/field[@name='paramete r']">
<xsl:for-each select="./*">
<xsl:variable name="v" select="local-name()"/>
<field name="{.}"
value="{../../field[@name='paramete rvalue']/*[local-name()=$v]}"
unit="{../../Field[@name='paramete runit']/*[local-name()=$v]}"/>
</xsl:for-each>
</xsl:template>

<xsl:template match="record/field[@name='paramete rvalue']"/>
<xsl:template match="record/field[@name='paramete runit']"/>

What I should do is changing the for-each's select to your
solution.

kind regards,
Gerald