Hi Arvind,
The following XSL is a XSLT 1.0 solution to the
problem you had described.. hope, I understood it
correctly ;)
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xalan="http://xml.apache.org/xalan";
extension-element-prefixes="xalan">
<xsl:output method="xml" version="1.0"
encoding="UTF-8" indent="yes"/>
<xsl:template match="/root">
<xsl:variable name="temp-rtf">
<xsl:for-each select="*">
<xsl:if test="name(.)= 'a' ">
<a>
<xsl:for-each select="@*"> <att>
<name>
<xsl:value-of select="name(.)"/>
</name>
<value>
<xsl:value-of select="."/>
</value>
</att>
</xsl:for-each>
</a>
</xsl:if>
<xsl:if test="name(.)= 'c' ">
<c>
<xsl:for-each select="@*"> <att>
<name>
<xsl:value-of select="name(.)"/>
</name>
<value>
<xsl:value-of select="."/>
</value>
</att>
</xsl:for-each>
</c>
</xsl:if>
</xsl:for-each>
</xsl:variable>
<xsl:variable name="a-attributes"
select="xalan:nodeset($temp-rtf)/a//att"/>
<xsl:variable name="c-attributes"
select="xalan:nodeset($temp-rtf)/c//att"/>
<xsl:variable name="result">
<xsl:for-each
select="xalan:nodeset($temp-rtf)/a//att">
<xsl:for-each
select="xalan:nodeset($temp-rtf)/c//att">
<xsl:if test="./name =
$a-attributes[position()]/name">
<xsl:call-template name="calculateResult">
<xsl:with-param name="x" select=" 'y' "/>
</xsl:call-template>
</xsl:if>
<xsl:if test="not(./value =
$a-attributes[position()]/value)">
<xsl:call-template name="calculateResult">
<xsl:with-param name="x" select=" 'n' "/>
</xsl:call-template>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
<xsl:for-each
select="xalan:nodeset($temp-rtf)/c//att">
<xsl:for-each
select="xalan:nodeset($temp-rtf)/a//att">
<xsl:if test="./name =
$a-attributes[position()]/name">
<xsl:call-template name="calculateResult">
<xsl:with-param name="x" select=" 'y' "/>
</xsl:call-template>
</xsl:if>
<xsl:if test="not(./value =
$a-attributes[position()]/value)">
<xsl:call-template name="calculateResult">
<xsl:with-param name="x" select=" 'n' "/>
</xsl:call-template>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
</xsl:variable>
<xsl:if test="xalan:nodeset($result)/r2[1] =
'notequal' ">
Attribute sets not equal
</xsl:if>
<xsl:if test=" not(xalan:nodeset($result)/r2[1] =
'notequal' )">
<xsl:if test="xalan:nodeset($result)/r1[1] =
'equal' ">
Attribute sets equal
</xsl:if>
</xsl:if>
</xsl:template>
<xsl:template name="calculateResult">
<xsl:param name="x"/>
<xsl:if test="$x = 'y' ">
<r1>equal</r1>
</xsl:if>
<xsl:if test="$x = 'n' ">
<r2>notequal</r2>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
When the above XSL is applied to the XML --
<?xml version="1.0" encoding="UTF-8"?>
<root>
<a id1="1" id2="2">one</a>
<b id1="2">two</b>
<c id1="1" id2="2">three</c>
<d id1="4">four</d>
<e id1="5">five</e>
</root>
, it produces o/p
Attribute sets equal
and, for e.g. when the XSL is applied to the XML --
<?xml version="1.0" encoding="UTF-8"?>
<root>
<a id1="1" id2="2">one</a>
<b id1="2">two</b>
<c id1="1" id2="3">three</c>
<d id1="4">four</d>
<e id1="5">five</e>
</root>
, it produces o/p
Attribute sets not equal
You can have any no of attributes(for elements <a> and
<c>), with any names, and attributes can have any
values
You can decide which elements to compare(i.e. their
attribute structure), by modifying 'a' and 'c' within
the XSL..
Hope my answer is useful, and you can adapt it for
your problem..
Regards,
Mukul
--- Arvind Bassi <arvind_bassi(_at_)yahoo(_dot_)co(_dot_)uk> wrote:
What is the best way to compare two elements in
terms of their
attributes, and the attribute values? I need to
ensure that each
element has the same number of attributes, the same
attribute names and
the same attribute values.
I am currently working on a stylesheet which
compares two xml
documents, and generates the differences between
them. I have used Lar
Huttar's xml document comparison stylesheet as my
base (located at
http://www.dpawson.co.uk), but am stuck on
augmenting it with checks on
attributes.
I am currently stuck with something along the lines
of:
...
<xsl:call-template name="compare-attributes">
with nodes as parameters
...
<xsl:template name="compare-attributes">
<xsl:param name="attrA"/>
<xsl:param name="attrB"/>
<xsl:for-each select="$attrA/@*">
.... check that the same attribute
exists with
.... the same attribute exists
if it does then compare the values
for equality
</xsl:for-each>
</xsl:template>
However, l cannot get a handle on each of the two
attributes to compare
them. Can somebody help to fill in the blanks?
Thanks.
Arvind.
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