I have 2 files
catalog.xml
<?xml version="1.0" encoding="UTF-8"?>
<catalog>
<CD Title="Still got the blues" vinyl="unknown"/>
<CD Title="When a man loves a woman" vinyl="unknown"/>
</catalog>
vinyl.xml
<?xml version="1.0" encoding="UTF-8"?>
<Vinyl>
<Album>
<Title>When a man loves a woman</Title>
<Vinyl>Yes</Vinyl>
</Album>
</Vinyl>
How to produce such output.xml with xslt?
<?xml version="1.0" encoding="UTF-8"?>
<catalog>
<CD Title="Still got the blues" vinyl="unknown"/>
<CD Title="When a man loves a woman" vinyl="yes"/>***
</catalog>
***mark this line becouse it changed in output.xml
The following transform, uses catalog.xml as input and loads vinyl.xml using document(). It performs the merge just by making a simple test.
[XSLT 1.0]
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output indent="yes"/>
<xsl:variable name="vinyl" select="document('test_i2.xml')"/>
<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>
<xsl:template match="@vinyl">
<xsl:attribute name="vinyl">
<xsl:variable name="test" select="
$vinyl/Vinyl/Album[Title=current()/../@Title]/Vinyl"/>
<xsl:choose>
<xsl:when test="$test">
<xsl:value-of select="$test"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="."/>
</xsl:otherwise>
</xsl:choose>
</xsl:attribute>
</xsl:template>
</xsl:stylesheet>
This template for the attribute is less immediate, but it exploits pure XPath:
<xsl:template match="@vinyl">
<xsl:attribute name="vinyl">
<xsl:value-of select="
$vinyl/Vinyl/Album[Title=current()/../@Title]/Vinyl
|
self::node()[count($vinyl/Vinyl/Album[Title=current()/../@Title])=0]"/>
</xsl:attribute>
</xsl:template>
