Multiple Input XML documents to produce one output XML

[SV]

I have two input XML files. One lists all the expected elements
(default.xml) with default values and the other is the actual data
(data.xml). For any elements that are missing in data.xml, I want to
copy them from all.xml and put it in the resulting OUTPUT document

default.xml
<CLOTHES>
<JEANS>unknown/JEANS>
<SHIRTS>unknown</SHIRTS>
<TOPS>missing</TOPS>
<SWIMSUITS>missing</SWIMSUITS>
</CLOTHES>

data.xml
<CLOTHES>
<JEANS>xxx</JEANS>
<SHIRTS>yyy</SHIRTS>
<TOPS>zzz</TOPS>
</CLOTHES>

OUTPUT should look like this:
<CLOTHES>
<JEANS>xxx</JEANS>
<SHIRTS>yyy</SHIRTS>
<TOPS>zzz</TOPS>
<SWIMSUITS>missing</SWIMSUITS>
</CLOTHES>

How do i do this?

Thanks,
SV

 

[Mukul Gandhi]

Please try this XSLT stylesheet.

<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:common="http://exslt.org/common"
exclude-result-prefixes="common"
version="1.0">

<xslutput method="xml" indent="yes" />

<xsl:variable name="doc1" select="/" />
<xsl:variable name="doc2" select="document('default.xml')" />

<xsl:template match="/">
<CLOTHES>
<xsl:variable name="rtf">
<!-- iterate 1st document -->
<xsl:for-each select="$doc1/CLOTHES/*">
<xsl:variable name="elem" select="." />
<xsl:variable name="flag">
<xsl:for-each select="$doc2/CLOTHES/*">
<xsl:if test="name($elem) = name()">
1
</xsl:if>
</xsl:for-each>
</xsl:variable>
<xsl:if test="not(contains($flag, '1'))">
<xsl:copy-of select="$elem" />
</xsl:if>
</xsl:for-each>

<!-- iterate 2nd document -->
<xsl:for-each select="$doc2/CLOTHES/*">
<xsl:variable name="elem" select="." />
<xsl:variable name="flag">
<xsl:for-each select="$doc1/CLOTHES/*">
<xsl:if test="name($elem) = name()">
1
</xsl:if>
</xsl:for-each>
</xsl:variable>
<xsl:if test="not(contains($flag, '1'))">
<xsl:copy-of select="$elem" />
</xsl:if>
</xsl:for-each>
</xsl:variable>

<xsl:copy-of select="$doc1/CLOTHES/*" />
<xsl:copy-of select="common:node-set($rtf)/*" />
</CLOTHES>
</xsl:template>

</xsl:stylesheet>

Hope this helps,

Regards,
Mukul