Keys are usually recommended for performance, but when you're handling
cross-references they can also make your code simpler and more
understandable.
<xsl:key name="man-by-name" match="Man" use="@name"/>
<xsl:key name="woman-by-name" match="Woman" use="@name"/>
<xsl:key name="man-by-wifes-name" match="Man" use="@wife"/>
<xsl:template match="Woman">
<xsl:apply-templates select="key('man-by-wifes-name', @name)"/>
In 2.0 I often write stylesheet functions to encapsulate a relationship:
<xsl:function name="get-husband" as="element(Man)">
<xsl:param name="wife" as="element(Woman)">
<xsl:sequence select="key('man-by-wifes-name', $wife/@name)"/>
</xsl:function>
You can then use this in path expressions rather like a virtual axis:
<xsl:template match="Woman">
<xsl:value-of select="get-husband(.)/get-children(.)/@date-of-birth"/>
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: David(_dot_)McKay(_at_)racalinstrumentsgroup(_dot_)co(_dot_)uk
[mailto:David(_dot_)McKay(_at_)racalinstrumentsgroup(_dot_)co(_dot_)uk]
Sent: 09 February 2005 09:28
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Addressing siblings
--- XSL Processor Details
Vendor: SAXON 6.5.3 from Michael Kay
Vendor URL: http://saxon.sf.net/
---
Say I have some (grossly simplified, politically incorrect,
and exclusive of alternate lifestyles) XML which looks
something like this:
<?xml version="1.0" encoding="UTF-8"?>
<People>
<Man name="Bob" wife="Alice" birth="1960-08-15"/>
<Woman name="Alice" birth="1955-10-26"/>
</People>
To cut a long story short, I have an xsl template which
scopes Woman, and I want to set a variable to be that Woman's
husband (ie the Man for whom the Woman is the wife). I've
come up with the following method:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; version="1.0">
<xsl:output method="text" indent="no" encoding="UTF-8"/>
<xsl:template match="/">
<xsl:apply-templates/>
</xsl:template>
<!-- various processing -->
<xsl:template match="Man" mode="husband">
<xsl:value-of select="@name"/>
</xsl:template>
<xsl:template match="Woman" mode=>
<xsl:variable name="me" select="@name"/>
<xsl:variable name="husband">
<xsl:apply-templates mode="husband"
select="../*[(_at_)wife=$me]"/>
</xsl:variable>
<!-- do something with $husband -->
</xsl:template>
</xsl:stylesheet>
Is there a more compact way (especially since I would want to
access the birth attribute too)? I thought something along
the lines of the following might work, but I couldn't figure out how.
<xsl:variable name="husband-birthday"
select="../*[(_at_)wife=(_dot_)/@name]/@birth"/>
Thanks.
Dave McKay
**********************************************************************
IMPORTANT NOTICE
The information contained in this e-mail is confidential. It may also
be legally privileged. It is intended only for the stated
addressee(s)
and access to it by any other person is unauthorised. If you are not
an addressee, you must not disclose, copy, circulate or in any other
way use or rely on the information contained in this e-mail. Such
unauthorised use may be unlawful.
If you have received this e-mail in error, please inform
Racal Instruments Group Ltd. immediately by
emailing postmaster(_at_)racalinstrumentsgroup(_dot_)co(_dot_)uk
or
phoning +44 (0)1202 872800 (ask for the I.T. Dept.)
and delete it and all copies from your system.
www.racalinstrumentsgroup.co.uk
**********************************************************************
--~------------------------------------------------------------------
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to: http://lists.mulberrytech.com/xsl-list/
or e-mail:
<mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--
--~------------------------------------------------------------------
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to: http://lists.mulberrytech.com/xsl-list/
or e-mail: <mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--