Question

I’m trying to add different tags to a node depending on an attribute value of its grandchild node.

Sample Input (a 1×3 table):

<table>
    <row>
        <cell row="1" column="1" >heading text one</cell>
    </row>

    <row>
        <cell row="2" column="1" >body text one</cell>
    </row>
    <row>
        <cell row="3" column="1" >body text two</cell>
    </row>
</table>

Need output like this:

<TableElmt>
    <HeadingElmt>
        <RowElmt>
            <CellElmt>heading text one</CellElmt>
        </RowElmt>
    </HeadingElmt>

    <BodyElmt>
        <RowElmt>
            <CellElmt>body text one</CellElmt>
        </RowElmt>
        <RowElmt>
            <CellElmt>body text two</CellElmt>
        </RowElmt>
    </BodyElmt>
</TableElmt>

Basically I can only decide if the row is a heading row based on the @row element of the cell.

Here’s what I’ve tried:

<xsl:template name="matcheverything" match="table">
    <xsl:apply-templates select="row" />
</xsl:template>

<xsl:template name="matchheadings" match="table[*/*/@row=1]">
    <BodyElmt>
        <xsl:apply-templates select="row" />
    </BodyElmt>
</xsl:template>

<xsl:template match="row">
    <xsl:choose>
        <xsl:when test="*/@row=1">
            <HeadingElmt><RowElmt>
                <xsl:apply-templates select="cell"/>
            </RowElmt></HeadingElmt>
        </xsl:when>
        <xsl:otherwise>
            <RowElmt>
                <xsl:apply-templates select="cell"/>
            </RowElmt>
        </xsl:otherwise>
    </xsl:choose>
</xsl:template>

<xsl:template match="cell">
    <CellElmt><xsl:apply-templates select="*"/></CellElmt>
</xsl:template>

I was thinking the “matchheadings” template, having a more specific match requirement, should recognize the heading row, however it’s actually matching every single row in the table.

So my actual out put from this stylesheet is every row treated as a heading row – very bad 🙁

<TableElmt>
    <HeadingElmt>
        <RowElmt>
            <CellElmt>heading text one</CellElmt>
        </RowElmt>

        <RowElmt>
            <CellElmt>body text one</CellElmt>
        </RowElmt>
        <RowElmt>
            <CellElmt>body text two</CellElmt>
        </RowElmt>
    </HeadingElmt>
</TableElmt>

Answer 1

This transformation:

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:output omit-xml-declaration="yes" indent="yes"/>
 <xsl:strip-space elements="*"/>

 <xsl:template match="table">
  <TableElmt>
   <xsl:apply-templates/>
  </TableElmt>
 </xsl:template>

 <xsl:template match="row[cell/@row='1']">
  <HeadingElmt>
   <xsl:apply-templates select="." mode="copy"/>
  </HeadingElmt>
 </xsl:template>

 <xsl:template match="row[cell[not(@row='1')]][1]">
  <BodyElmt>
   <xsl:apply-templates select=".|following-sibling::row" mode="copy"/>
  </BodyElmt>
 </xsl:template>

 <xsl:template match="row" mode="copy">
   <RowElmt>
     <xsl:apply-templates/>
   </RowElmt>
 </xsl:template>

 <xsl:template match="cell">
   <CellElmt>
    <xsl:value-of select="."/>
   </CellElmt>
 </xsl:template>

 <xsl:template match="row"/>
</xsl:stylesheet>

when applied on the provided XML document:

<table>
    <row>
        <cell row="1" column="1" >heading text one</cell>
    </row>
    <row>
        <cell row="2" column="1" >body text one</cell>
    </row>
    <row>
        <cell row="3" column="1" >body text two</cell>
    </row>
</table>

produces the wanted, correct result:

<TableElmt>
    <HeadingElmt>
        <RowElmt>
            <CellElmt>heading text one</CellElmt>
        </RowElmt>
    </HeadingElmt>
    <BodyElmt>
        <RowElmt>
            <CellElmt>body text one</CellElmt>
        </RowElmt>
        <RowElmt>
            <CellElmt>body text two</CellElmt>
        </RowElmt>
    </BodyElmt>
</TableElmt>