updating an xml from another one using ids - xslt

Question

I have to pick text from translation.xml and update skeleton.xml's respective (where #xid =#id) nodes . in other words IF #id of translation.xml matches with #xid of skeleton.xml, the text content should be placed under skeleton.xml (+ if there is child element present the text content (inline element i, b, etc) also should go in respective parent element: Please see example below for more details:
Note: the inline element could be anything in skeleton.xml (its not restrict to b or i, so it should be generic)
skeleton.xml
<root>
<para a="b" b="c">
<text xid="1">This is first para <b xid="2" a="c" b="d">This is bold <i xid="3" b="d" c="e">This is italics</i> rest of bold</b> rest of para</text>
</para>
<para><text xid="4">This is second para</text></para>
<para><text xid="5">This is unchanged para</text></para>
<para><text xid="6">This is unchanged para</text></para>
</root>
translation.xml
<root>
<TU id="1">
<source>This is first para <g id="2" tagName="b">This is bold <g id="3" tagName="i">This is italics</g> rest of bold</g> rest of para</source>
<target>suum primum para <g id="2" tagName="b">Et hoc confidens, <g id="3" tagName="i">Hoc est, Te Deum</g> Reliqua autem audet,</g> reliqua autem verba haec</target>
</TU>
<TU id="4">
<source>This is second para</source>
<target>Hoc est secundum verba haec</target>
</TU>
</root>
UpdatedSkeleton.xml
<root>
<para a="b" b="c">
<text xid="1">suum primum para <b xid="2" a="c" b="d">Et hoc confidens, <i xid="3" b="d" c="e">Hoc est, Te Deum</i> Reliqua autem audet,</b> reliqua autem verba haec</text>
</para>
<para><text xid="4">Hoc est secundum verba haec</text></para>
<para><text xid="5">This is unchanged para</text></para>
<para><text xid="6">This is unchanged para</text></para>
</root>
I am trying with this code, but facing challenge to place text of inline content at the right place:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="2.0">
<xsl:param name="translation" select="'file:/C:/Skeleton.xml'"></xsl:param>
<xsl:variable name="doc">
<xsl:copy-of select="doc($translation)"/>
</xsl:variable>
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="text">
<xsl:variable name="skelID" select="#xid"/>
<xsl:choose>
<xsl:when test="$doc//*[$skelID=#id]">
<xsl:apply-templates select="$doc//*[$skelID=#id]/target"/>
</xsl:when>
<xsl:otherwise>
<xsl:apply-templates/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>

Answer 1

You can copy the <text> node adding <xsl:copy> to your test block, and copy the xid attribute using <xsl:attribute>. For the unmodified nodes, you can use <xsl:copy-of> which copies the full tree, including attributes:
<xsl:when test="$doc//*[$skelID=#id]">
<xsl:copy>
<xsl:attribute name="xid">
<xsl:value-of select="$skelID"/>
</xsl:attribute>
<xsl:apply-templates select="$doc//*[$skelID=#id]/target"/>
</xsl:copy>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="."/>
</xsl:otherwise>
That will also copy the <target> element. You can remove it adding a template:
<xsl:template match="target">
<xsl:apply-templates/>
</xsl:template>
You also aren't replacing the <g> tag. I assume the #tagName attribute says what it's supposed to be transformed into. This should do it:
<xsl:template match="g">
<xsl:element name="{#tagName}">
<xsl:attribute name="xid">
<xsl:value-of select="#id"/>
</xsl:attribute>
<xsl:apply-templates/>
</xsl:element>
</xsl:template>
I might have missed something, but that will probably solve most of your problem.