按键和位置()对XSLT进行分组和排序

时间:2011-09-04 13:45:52

标签: xml xslt key grouping xslt-2.0

我正在尝试按字母顺序显示数据,以便以相同字母开头的项目位于不同的列中。在启动新列之前,这些列最多可容纳10个项目。我可以成功地按字母顺序划分数据并将其除以每列的项目数,但我很难合并2:

按字母顺序划分:

<xsl:template match="/">
<xsl:key name="node-by-first-letter" match="node" use="substring(@email, 1, 1)" />


<div class="scroller-panel">
    <xsl:for-each select="msxml:node-set($members)/node[count(. | key('node-by-first-letter', substring(@email, 1, 1))[1]) = 1]">
        <xsl:sort select="@email" order="ascending"/>

            <xsl:apply-templates select="." mode="group" />
</xsl:for-each></div></xsl:template>
<xsl:template match="node" mode="group">
    <div class="column-312 scroller-item people-search-column fade-panel">
    <h2>
        <xsl:value-of select="Exslt.ExsltStrings:uppercase(substring(@email,1,1))"/>
    </h2>
    <ul class="stripe-list">
        <xsl:apply-templates select="key('node-by-first-letter', substring(@email, 1, 1))" mode="item">
            <xsl:sort select="@email" />
        </xsl:apply-templates>    
    </ul>
    </div>
</xsl:template>
<xsl:template match="node" mode="item">
            <li>
                <a href="4.0.1.person.profile.html">
                    <xsl:value-of select="@email"/>
                </a>
            </li>
</xsl:template>

除以每列的最大项目数:

<xsl:for-each select="msxml:node-set($members)/members/member[position() mod 10 = 1]">
<ul>
<xsl:for-each select=". | following-sibling::*[not(position()    >=   10)]">
<li>
<xsl:value-of select="@email"/>
</li>
</xsl:for-each>
</ul>
</xsl:for-each>

首选输出如下:

http://rookery9.aviary.com.s3.amazonaws.com/9676500/9676792_3580_625x625.jpg

1 个答案:

答案 0 :(得分:4)

<强>予。 XSLT 2.0解决方案:

<xsl:stylesheet version="2.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
     exclude-result-prefixes="xs">
    <xsl:output omit-xml-declaration="yes" indent="yes"/>
    <xsl:param name="pColLength" as="xs:integer" select="10"/>

 <xsl:template match="/*">
     <names>
       <xsl:for-each-group select="name"
                           group-by="substring(.,1,1)">
        <xsl:sort select="current-grouping-key()"/>
         <xsl:for-each-group select="current-group()"
          group-by="(position()-1) idiv $pColLength">
          <column>
            <xsl:copy-of select="current-group()"/>
          </column>
         </xsl:for-each-group>
       </xsl:for-each-group>
     </names>
 </xsl:template>
</xsl:stylesheet>

应用于此XML文档(因为问题中没有提供!!!):

<names>
        <name>T A</name>
        <name>T B</name>
        <name>T C</name>
        <name>T D</name>
        <name>T E</name>
        <name>T F</name>
        <name>T G</name>
        <name>T H</name>
        <name>T I</name>
        <name>T J</name>
        <name>T K</name>
        <name>T L</name>
        <name>A A</name>
        <name>A B</name>
        <name>A C</name>
        <name>A D</name>
        <name>A E</name>
        <name>A F</name>
        <name>A G</name>
        <name>A H</name>
        <name>A I</name>
        <name>A J</name>
        <name>A K</name>
        <name>A L</name>
        <name>X A</name>
        <name>X B</name>
        <name>X C</name>
        <name>X D</name>
        <name>X E</name>
        <name>X F</name>
        <name>X G</name>
        <name>X H</name>
        <name>X I</name>
        <name>X J</name>
        <name>X K</name>
        <name>X L</name>
        <name>R A</name>
        <name>R B</name>
        <name>R C</name>
        <name>R D</name>
        <name>R E</name>
        <name>R F</name>
        <name>R G</name>
        <name>R H</name>
        <name>R I</name>
        <name>R J</name>
        <name>R K</name>
        <name>R L</name>
</names>

生成所需的输出 - 按开头第一个字母排序的名称,并将其分为10个项目的列

<names>
   <column>
      <name>A A</name>
      <name>A B</name>
      <name>A C</name>
      <name>A D</name>
      <name>A E</name>
      <name>A F</name>
      <name>A G</name>
      <name>A H</name>
      <name>A I</name>
      <name>A J</name>
   </column>
   <column>
      <name>A K</name>
      <name>A L</name>
   </column>
   <column>
      <name>R A</name>
      <name>R B</name>
      <name>R C</name>
      <name>R D</name>
      <name>R E</name>
      <name>R F</name>
      <name>R G</name>
      <name>R H</name>
      <name>R I</name>
      <name>R J</name>
   </column>
   <column>
      <name>R K</name>
      <name>R L</name>
   </column>
   <column>
      <name>T A</name>
      <name>T B</name>
      <name>T C</name>
      <name>T D</name>
      <name>T E</name>
      <name>T F</name>
      <name>T G</name>
      <name>T H</name>
      <name>T I</name>
      <name>T J</name>
   </column>
   <column>
      <name>T K</name>
      <name>T L</name>
   </column>
   <column>
      <name>X A</name>
      <name>X B</name>
      <name>X C</name>
      <name>X D</name>
      <name>X E</name>
      <name>X F</name>
      <name>X G</name>
      <name>X H</name>
      <name>X I</name>
      <name>X J</name>
   </column>
   <column>
      <name>X K</name>
      <name>X L</name>
   </column>
</names>

<强>解释

  1. 嵌套xsl:for-each-group - 首先按起始字符分组,然后针对每个此类已确定和已排序的组 - 按其项目所在的列数排序

  2. 使用标准XSLT 2.0函数current-grouping-key()current-group()

  3. II.XSLT 1.0解决方案

    <xsl:stylesheet version="1.0"
     xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
     <xsl:output omit-xml-declaration="yes" indent="yes"/>
    
     <xsl:param name="pColLength" select="10"/>
    
     <xsl:key name="kStarting" match="name"
      use="substring(.,1,1)"/>
    
     <xsl:template match="/*">
      <names>
              <xsl:for-each select=
               "name
                  [generate-id()
                  =
                   generate-id(key('kStarting', substring(.,1,1))[1])
                  ]
               ">
                <xsl:sort select="substring(.,1,1)"/>
    
                <xsl:variable name="vgroupNames" select=
                   "key('kStarting', substring(.,1,1))"/>
    
                <xsl:apply-templates select="$vgroupNames[1]">
                  <xsl:with-param name="pGroup" select="$vgroupNames"/>
                  <xsl:with-param name="pGroupLength" select=
                   "count($vgroupNames)"/>
                </xsl:apply-templates>
              </xsl:for-each>
      </names>
     </xsl:template>
    
     <xsl:template match="name">
       <xsl:param name="pGroup"/>
       <xsl:param name="pGroupLength"/>
       <xsl:param name="pInd" select="1"/>
    
       <xsl:if test="not($pInd > $pGroupLength)">
          <column>
           <xsl:copy-of select=
           "$pGroup
               [position() >= $pInd
              and
                not(position() > $pInd + $pColLength -1)
                ]"/>
          </column>
    
          <xsl:apply-templates select=
            "$pGroup[position() = $pInd + $pColLength]">
           <xsl:with-param name="pGroup" select="$pGroup"/>
            <xsl:with-param name="pGroupLength" select="$pGroupLength"/>
            <xsl:with-param name="pInd" select="$pInd + $pColLength"/>
           </xsl:apply-templates>
       </xsl:if>
     </xsl:template>
    </xsl:stylesheet>
    

    应用于同一XML文档(如上所述)时,生成相同的所需输出 - 按开头第一个字母排序的名称,并放入10个项目的列中

    <names>
       <column>
          <name>A A</name>
          <name>A B</name>
          <name>A C</name>
          <name>A D</name>
          <name>A E</name>
          <name>A F</name>
          <name>A G</name>
          <name>A H</name>
          <name>A I</name>
          <name>A J</name>
       </column>
       <column>
          <name>A K</name>
          <name>A L</name>
       </column>
       <column>
          <name>R A</name>
          <name>R B</name>
          <name>R C</name>
          <name>R D</name>
          <name>R E</name>
          <name>R F</name>
          <name>R G</name>
          <name>R H</name>
          <name>R I</name>
          <name>R J</name>
       </column>
       <column>
          <name>R K</name>
          <name>R L</name>
       </column>
       <column>
          <name>T A</name>
          <name>T B</name>
          <name>T C</name>
          <name>T D</name>
          <name>T E</name>
          <name>T F</name>
          <name>T G</name>
          <name>T H</name>
          <name>T I</name>
          <name>T J</name>
       </column>
       <column>
          <name>T K</name>
          <name>T L</name>
       </column>
       <column>
          <name>X A</name>
          <name>X B</name>
          <name>X C</name>
          <name>X D</name>
          <name>X E</name>
          <name>X F</name>
          <name>X G</name>
          <name>X H</name>
          <name>X I</name>
          <name>X J</name>
       </column>
       <column>
          <name>X K</name>
          <name>X L</name>
       </column>
    </names>
    

    <强>解释

    1. 使用Muenchian grouping method ,加上排序,我们获得(按排序顺序)每组name元素,这些元素由以相同字符开头的所有名称组成。

    2. 通过将模板应用于其第一个name元素来处理上面获得的每组name个元素。整个组,其长度和组中name元素的索引(默认值= 1)将作为参数传递。

    3. 保证匹配name元素的模板仅应用于列中的起始元素。它创建一个新的column元素,并在其中复制此列的所有name元素(从索引$pInd开始,到索引$pInd+$pColLength -1结束。不要求这些元素应该是兄弟姐妹(并且它们不是)。如果不仅仅是复制而且每个name还需要额外的处理,这可以通过将<xsl:copy-of>指令替换为:

      <来完成。 / LI>

      -

      <xsl:apply-templates mode="process" select=
                 "$pGroup
                     [position() >= $pInd
                    and
                      not(position() > $pInd + $pColLength -1)
                      ]"/>