Question

with the XML structure below:

<root foo1="bar1" foo2="bar2" foo3="bar3">
    <foo1 foo1="bar1" />

    <data>
        <foo1>bar1</foo1>
        <foo2>bar2</foo2>
        <foo3>bar3</foo3>
    </data>
</root>

I would like to copy this XML structure into another one with some exception on attributes and/or node() names and get the following
result using XSLT 1.0:

<root foo1="bar1" foo2="bar2">    
    <data>
        <foo1>bar1</foo1>
        <foo3>bar3</foo3>
    </data>
</root>

My rules are:

1) Copy every root attributes except foo3

2) Copy every child nodes() unless the ones named foo1 and foo2

My actual XSL stylesheet. I managed to get the root attributes restriction working :

<xsl:template match="root">
    <root>
        <xsl:for-each select="./@*">
            <xsl:variable name="name" select="name()" />

            <xsl:if test="name() != 'foo3'">
                <xsl:attribute name="{$name}"><xsl:value-of select="." /></xsl:attribute>
            </xsl:if>
        </xsl:for-each>


    </root>
</xsl:template>

Also, one harder question:
What if I want to matches my attributes and nodes dynamically. I would like to specify server-side what
attributes and nodes() I would like to remove. It’s probably like generating a string that is then used in the <xsl:if>. I don’t know if that’s even possible.

Thank you.

Answer 1

I would like to copy this XML
structure into another one with some
exception […]

My rules are:

1) Copy every root attributes except
foo3

2) Copy every child nodes() unless the
ones named foo1 and foo2

Update from comments:

Hi, this almost work. Except that
data/foo1 should be copied

This stylesheet:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:template match="node()|@*">
        <xsl:copy>
            <xsl:apply-templates select="node()|@*"/>
        </xsl:copy>
    </xsl:template>
    <xsl:template match="root/@foo3|root/foo1|foo2"/>
</xsl:stylesheet>

Output:

<root foo1="bar1" foo2="bar2">
    <data>
        <foo1>bar1</foo1>
        <foo3>bar3</foo3>
    </data>
</root>

Note: Overwriting identity rule with empty templates

With the node names in parameter, this stylesheet:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:param name="pStrip" select="'root/@foo3|root/foo1|foo2'"/>
    <xsl:template match="node()|@*" name="identity">
        <xsl:param name="pStripPaths" select="concat($pStrip,'|')"/>
        <xsl:param name="pNodePath">
            <xsl:call-template name="path"/>
            <xsl:text>|</xsl:text>
        </xsl:param>
        <xsl:variable name="vStripPath"
                      select="substring-before($pStripPaths,'|')"/>
        <xsl:choose>
            <xsl:when test="not($pStripPaths)">
                <xsl:copy>
                    <xsl:apply-templates select="node()|@*"/>
                </xsl:copy>
            </xsl:when>
            <xsl:when test="contains($pNodePath,concat('/',$vStripPath,'|'))"/>
            <xsl:otherwise>
                <xsl:call-template name="identity">
                    <xsl:with-param name="pStripPaths"
                                    select="substring-after($pStripPaths,'|')"/>
                    <xsl:with-param name="pNodePath" select="$pNodePath"/>
                </xsl:call-template>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:template>
    <xsl:template match="node()" name="path" mode="path">
        <xsl:apply-templates select="parent::*" mode="path"/>
        <xsl:value-of select="concat('/',
                                     substring('@',
                                               1 div (count(.|../@*)
                                                      = count(../@*))),
                                     name())"/>
    </xsl:template>
</xsl:stylesheet>

Output:

<root foo1="bar1" foo2="bar2">
    <data>
        <foo1>bar1</foo1>
        <foo3>bar3</foo3>
    </data>
</root>

Note: In XML, the element name refers to the schema, mostly defining the hierarchie position, but yours is not the case.

Edit: Just for fun, an XSLT 2.0 solution:

<xsl:stylesheet version="2.0"
     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
     xmlns:xs="http://www.w3.org/2001/XMLSchema"
     xmlns:local="http://localhost">
    <xsl:param name="pStrip" select="'root/@foo3|root/foo1|foo2'"/>
    <xsl:template match="node()|@*">
        <xsl:copy>
            <xsl:apply-templates select="node()|@*"/>
        </xsl:copy>
    </xsl:template>
    <xsl:template match="*[local:match($pStrip,.)]|@*[local:match($pStrip,.)]"/>
    <xsl:function name="local:match" as="xs:boolean">
        <xsl:param name="pStripPaths" as="xs:string"/>
        <xsl:param name="pNode" as="item()"/>
        <xsl:variable name="vNodePath"
                      select="string-join(($pNode
                                            /ancestor::node()
                                             /name(),
                                           if ($pNode instance of attribute())
                                           then concat('@',name($pNode))
                                           else name($pNode)),
                                           '/')"/>
        <xsl:sequence select="some $path in tokenize($pStripPaths,'\|')
                                  satisfies ends-with($vNodePath,
                                                      concat('/',$path))"/>
    </xsl:function>
</xsl:stylesheet>

Edit 2: All the stylesheet following the same string pattern.