Input xml file:
<root>
<x1 attr11="sd5">
<x2 attr12="sd6" attr15="sd7">
<a attr0="sd5"/>
<b>
<x3 attr18="sd8">
<c>
<x4 attr19="sd9" />
<d awance="1" imlit="[0-200][201-300][301-1000]" />
<e awance="2" imlit="[0-500][501-1900]" />
</c>
</x3>
</b>
</x2>
</x1>
</root>
The "updates.xml" file from which updates are taken - the attributes of the a, b, c, d, e tags and the new "awance" and "imlit" tags, which are attributes in the input file:
<updates>
<a attr1="adf" attr2="67" />
<b attr3="g6h"/>
<c attr4="7jj" />
<d attr5="88" attr6="mn4" />
<e />
<awance const="?" attr7="terd7"/>
<imlit title="title" description="description">
<Template>
<Minimum title="min" const="?" description="desc" />
<Maximum title="max" const="?" description="desc" />
</Template>
</imlit>
</updates>
If the input file contains a tag from the "updates.xml" file, then the attributes from the "updates.xml" file are copied into it. Also, if a tag in the input file has the "awance" and/or "imlit" attribute, then after transformation this attribute becomes a child tag instead of an attribute, and the value of the "awance" and/or "imlit" attribute from the input file becomes the value of the "const" attribute of the tags "awance" and/or "imlit" of the file after transformation, respectively. The file after XSLT1.0 transformation should look like this:
<root>
<x1 attr11="sd5">
<x2 attr12="sd6" attr15="sd7">
<a attr0="sd5" attr1="adf" attr2="67" />
<b attr3="g6h">
<x3 attr18="sd8">
<c attr4="7jj">
<x4 attr19="sd9" />
<d attr5="88" attr6="mn4">
<awance const="1" attr7="terd7" />
<imlit title="title" description="description">
<Item key="1">
<Minimum title="min" const="0" description="desc" />
<Maximum title="max" const="200" description="desc" />
</Item>
<Item key="2">
<Minimum title="min" const="201" description="desc" />
<Maximum title="max" const="300" description="desc" />
</Item>
<Item key="3">
<Minimum title="min" const="301" description="desc" />
<Maximum title="max" const="1000" description="desc" />
</Item>
</imlit>
</d>
<e>
<awance const="2" attr7="terd7" />
<imlit title="title" description="description">
<Item key="1">
<Minimum title="min" const="0" description="desc" />
<Maximum title="max" const="500" description="desc" />
</Item>
<Item key="2">
<Minimum title="min" const="501" description="desc" />
<Maximum title="max" const="1900" description="desc" />
</Item>
</imlit>
</e>
</c>
</x3>
</b>
</x2>
</x1>
</root>
Now this is the XSLT1.0 transformation file:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:exslt="http://exslt.org/common"
exclude-result-prefixes="exslt"
version="1.0">
<xsl:output method="xml" indent="yes" omit-xml-declaration="yes"/>
<xsl:strip-space elements="*"/>
<xsl:param name="updates" select="document('updates.xml')"/>
<xsl:key name="replacement" match="*" use="local-name()"/>
<!--Identity template-->
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="*">
<xsl:copy>
<xsl:apply-templates select="@*" />
<xsl:variable name="this" select="."/>
<xsl:for-each select="$updates">
<xsl:apply-templates select="key('replacement', local-name($this))/@*"/>
<xsl:choose>
<xsl:when test="not($this[@awance])">
</xsl:when>
<xsl:otherwise>
<xsl:variable name="const" select="$this/@awance"/>
<xsl:variable name="replacement">
<xsl:for-each select="$updates">
<xsl:copy-of select="key('replacement', local-name($this))"/>
</xsl:for-each>
</xsl:variable>
<xsl:variable name="awance" select="$updates//awance" />
<xsl:copy-of select="$awance"/>
<xsl:variable name="imlit" select="$updates//imlit" />
<xsl:copy-of select="$imlit"/>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
<xsl:template match="@awance" />
<xsl:template match="@imlit" />
</xsl:stylesheet>
XML file after transformation:
<root>
<x1 attr11="sd5">
<x2 attr12="sd6" attr15="sd7">
<a attr0="sd5" attr1="adf" attr2="67" />
<b attr3="g6h">
<x3 attr18="sd8">
<c attr4="7jj">
<x4 attr19="sd9" />
<d attr5="88" attr6="mn4">
<awance const="?" attr7="terd7" />
<imlit title="title" description="description">
<Template>
<Minimum title="min" const="?" description="desc" />
<Maximum title="max" const="?" description="desc" />
</Template>
</imlit>
</d>
<e>
<awance const="?" attr7="terd7" />
<imlit title="title" description="description">
<Template>
<Minimum title="min" const="?" description="desc" />
<Maximum title="max" const="?" description="desc" />
</Template>
</imlit>
</e>
</c>
</x3>
</b>
</x2>
</x1>
</root>
How to change "const" attribute values?
CodePudding user response：
This should give you a good start.
<xsl:template match="@awance" />
<xsl:template match="@imlit" />
<xsl:template match="a|b|c|d|e">
<xsl:variable name="name" select="local-name()"/>
<xsl:copy>
<xsl:apply-templates select="@*[local-name() != 'awance' and local-name() != 'imlit']"/>
<xsl:apply-templates select="$updates//*[local-name() = $name]/@*"/>
<xsl:apply-templates select="node()"/>
<xsl:if test="boolean(@awance)">
<xsl:element name="awance">
<xsl:attribute name="const">
<xsl:value-of select="@awance"/>
</xsl:attribute>
<xsl:apply-templates select="$updates//awance/@*[local-name() != 'const']"/>
</xsl:element>
</xsl:if>
<xsl:if test="boolean(@imlit)">
<xsl:element name="imlit">
<xsl:apply-templates select="$updates//imlit/@*"/>
<!-- I left this part for you. Convert the delimited list in imlit from the
input file to a node-set and then for-each element. Use the template
from the update file to output. -->
</xsl:element>
</xsl:if>
</xsl:copy>
</xsl:template>
<!--Identity template-->
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>