这是一个样式表,它将按照您建议的方式执行某些操作,但请注意,创建表的顺序取决于输入,并且可能会根据缺少的数据而改变。
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  xmlns:exsl="http://exslt.org/common"
  exclude-result-prefixes="xs exsl"
  version="1.0">
  <xsl:strip-space elements="*"/>
  <xsl:output indent="yes"/>
  <xsl:variable name="doc" select="/"/>
  <xsl:key name="rows" match="row" use="."/>
  <xsl:variable name="rows">
    <xsl:for-each select="//row[generate-id() = generate-id(key('rows', .)[1])]">
      <xsl:copy-of select="."/>
    </xsl:for-each>
  </xsl:variable>
  <xsl:key name="cols" match="col" use="."/>
  <xsl:variable name="cols">
    <xsl:for-each select="//col[generate-id() = generate-id(key('cols', .)[1])]">
      <xsl:copy-of select="."/>
    </xsl:for-each>
  </xsl:variable>
  <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>
  <xsl:key name="by.rowcol" match="item" use="concat(row,col)"/>
  <xsl:template match="data">
    <xsl:copy>
      <xsl:for-each select="exsl:node-set($rows)/row">
        <xsl:variable name="row" select="."/>
        <xsl:for-each select="exsl:node-set($cols)/col">
          <xsl:variable name="col" select="."/>
          <xsl:for-each select="$doc">
            <xsl:choose>
              <xsl:when test="key('by.rowcol',concat($row,$col))">
                <xsl:copy-of select="key('by.rowcol',concat($row,$col))"/>
              </xsl:when>
              <xsl:otherwise>
                <item>
                  <xsl:copy-of select="$row"/>
                  <xsl:copy-of select="$col"/>
                  <value/>
                </item>
              </xsl:otherwise>
            </xsl:choose>
          </xsl:for-each>
        </xsl:for-each>
      </xsl:for-each>
    </xsl:copy>
  </xsl:template>
</xsl:stylesheet>
或者,如果 row 和 col 值是数字,这里有一个样式表,它将通过连续迭代元素来完成您想要的操作:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  exclude-result-prefixes="xs"
  version="1.0">
  <xsl:strip-space elements="*"/>
  <xsl:output indent="yes"/>
  <!-- Figure out how wide the table is -->
  <xsl:variable name="max.col">
    <xsl:for-each select="//col">
      <xsl:sort select="substring-after(.,'Col')" data-type="number" order="descending"/>
      <xsl:if test="position() = 1">
        <xsl:value-of select="substring-after(.,'Col')"/>
      </xsl:if>
    </xsl:for-each>
  </xsl:variable>
  <!-- The identity template -->
  <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>
  <xsl:template match="data">
    <xsl:copy>
      <!-- Start off processing the first time in the first row -->
      <xsl:apply-templates select="item[row = 'Row1'][1]">
        <!-- We expect the coordinates to be (1,1) -->
        <xsl:with-param name="expected.row" select="1"/>
        <xsl:with-param name="expected.col" select="1"/>
      </xsl:apply-templates>
    </xsl:copy>
  </xsl:template>
  <xsl:template match="item">
    <xsl:param name="expected.row"/>
    <xsl:param name="expected.col"/>
    <!-- Figure out what coordinates this item is at -->
    <xsl:variable name="row" select="substring-after(row,'Row')"/>
    <xsl:variable name="col" select="substring-after(col,'Col')"/>
    <!-- Check to see if we're the last item in the row -->
    <xsl:variable name="is.last-in-row" select="not(following-sibling::item[row = current()/row])"/>
    <!-- Check to see if we skipped any rows -->
    <xsl:if test="$row > $expected.row">
      <!-- Call a template to recursively create the skipped rows of item -->
      <xsl:call-template name="fill.row">
        <xsl:with-param name="row" select="$expected.row"/>
        <xsl:with-param name="stop.row" select="$row - 1"/>
      </xsl:call-template>
    </xsl:if>
    <!-- We're further along than we expected that means some item were missed -->
    <xsl:if test="$col > $expected.col">
      <!-- Call a template to recursively create the skipped item -->
      <xsl:call-template name="fill.col">
        <xsl:with-param name="row" select="$row"/>
        <xsl:with-param name="col" select="$expected.col"/>
        <xsl:with-param name="stop.col" select="$col - 1"/>
      </xsl:call-template>
    </xsl:if>
    <!-- Copy the item we're on -->
    <xsl:copy-of select="."/>
    <!-- If this is the last item on the row and there are missing items create them -->
    <xsl:if test="$is.last-in-row and $max.col > $col">
      <xsl:call-template name="fill.col">
        <xsl:with-param name="row" select="$row"/>
        <xsl:with-param name="col" select="$col + 1"/>
        <xsl:with-param name="stop.col" select="$max.col"/>
      </xsl:call-template>
    </xsl:if>
    <!-- Move on to the next item -->
    <xsl:choose>
      <xsl:when test="$is.last-in-row">
        <!-- If we're the last in row, increase our expected row and reset the expected.col -->
        <xsl:apply-templates select="following-sibling::item[1]">
          <xsl:with-param name="expected.row" select="$expected.row + 1"/>
          <xsl:with-param name="expected.col" select="1"/>
        </xsl:apply-templates>
      </xsl:when>
      <xsl:otherwise>
        <!-- Increment our expected col and keep expected row the same -->
        <xsl:apply-templates select="following-sibling::item[1]">
          <xsl:with-param name="expected.row" select="$expected.row"/>
          <xsl:with-param name="expected.col" select="$expected.col + 1"/>
        </xsl:apply-templates>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>
  <!-- Recursively create item elements with the given $row for all the cols from $col to $stop.col inclusive -->
  <xsl:template name="fill.col">
    <xsl:param name="row"/>
    <xsl:param name="col"/>
    <xsl:param name="stop.col"/>
    <xsl:if test="$stop.col >= $col">
      <item>
        <row><xsl:value-of select="concat('Row',$row)"/></row>
        <col><xsl:value-of select="concat('Col',$col)"/></col>
        <value/>
      </item>
      <xsl:call-template name="fill.col">
        <xsl:with-param name="row" select="$row"/>
        <xsl:with-param name="col" select="$col + 1"/>
        <xsl:with-param name="stop.col" select="$stop.col"/>
      </xsl:call-template>
    </xsl:if>
  </xsl:template>
  <!-- Recursively create $max.col length rows of item elements from $row to $stop.row inclusive  -->
  <xsl:template name="fill.row">
    <xsl:param name="row"/>
    <xsl:param name="stop.row"/>
    <xsl:if test="$stop.row >= $row">
      <xsl:call-template name="fill.col">
        <xsl:with-param name="row" select="$row"/>
        <xsl:with-param name="col" select="1"/>
        <xsl:with-param name="stop.col" select="$max.col"/>
      </xsl:call-template>
      <xsl:call-template name="fill.row">
        <xsl:with-param name="row" select="$row + 1"/>
        <xsl:with-param name="stop.row" select="$stop.row"/>
      </xsl:call-template>
    </xsl:if>
  </xsl:template>
</xsl:stylesheet>