将兄弟节点转换为重叠节点

时间:2011-08-05 12:37:11

标签: xslt

我遇到了XSLT的问题。我在<level>内有一组兄弟节点(<source>),我希望在节点的重叠中进行转换(即每个级别都会在其先前的兄弟节点内呈现)。

XML INPUT

<?xml version="1.0"?>
<sources> 
    <source mode="manual"  name="test1">
                <level>blablabla Level1</level>
                <level>this is the second level</level>
                <level>this is the third level</level>
    </source>
</sources>

预期输出

我想要的输出是一个imbricated html版本(删节,重叠是这里的事情):

   <form class="source manual">
    source &gt; <input value="test1" name="sourceName" type="text">

    <!-- LEVEL #1 -->
    <p class="deepnessIndicator">Deepness: <strong>1</strong></p>
    <div class="deepnessContainer">
         <!-- LEVEL #2 -->
         next-level:
         <p class="deepnessIndicator">Deepness: <strong>2</strong></p>
         <div class="deepnessContainer">
              <!-- LEVEL #3 -->
              next-level:
              <p class="deepnessIndicator">Deepness: <strong>3</strong></p>
         </div>
    </div>
  </form>

不幸的是我编写的XSL失败了,这里是源码(我试图缩短但是):

XSL

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

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

    <!-- Main template here -->
    <xsl:template match="source[@mode='manual']">
        <form class="source manual">
            source &gt; <input type="text" name="sourceName" value="{@name}" />

            <!-- Here's what I call first the recursion 
                the parameter is the # of the <level> 
                that should be processed -->
            <xsl:call-template name="sourceLevelRecursion">
                <xsl:with-param name="currentLevel">1</xsl:with-param>
            </xsl:call-template>

        </form>
    </xsl:template>

    <!-- Recursion template -->
    <xsl:template name="sourceLevelRecursion">
        <xsl:param name="currentLevel" />

            <!-- this apply-templates should apply on only 
                one node because of the selector but it won't -->
        <xsl:apply-templates mode="deepnessHeader" select="./level[$currentLevel]">
            <xsl:with-param name="currentLevel"><xsl:value-of select="$currentLevel" /></xsl:with-param>
        </xsl:apply-templates>

        <xsl:if test="level[$currentLevel+1]">
            <div class="deepnessContainer">
                    <!-- Recursion Call here -->
            <xsl:call-template name="sourceLevelRecursion">
                <xsl:with-param name="currentLevel"><xsl:value-of select="$currentLevel+1" /></xsl:with-param>
                </xsl:call-template>
            </div>
                </xsl:if>
    </xsl:template>

        <xsl:template mode="deepnessHeader" match="level">
        <xsl:param name="currentLevel" />
            <p class="deepnessIndicator">Deepness: <strong><xsl:value-of select="$currentLevel" /></strong></p>
        </xsl:template>


<xsl:template match="text()" />

不幸的输出

我获得的最终错误输出是:

   <form class="source manual">
    source &gt; <input value="test1" name="sourceName" type="text">

    <p class="deepnessIndicator">Deepness: <strong>1</strong></p>
    <p class="deepnessIndicator">Deepness: <strong>1</strong></p>
    <p class="deepnessIndicator">Deepness: <strong>1</strong></p>

    <div class="deepnessContainer">
      next-level:

      <p class="deepnessIndicator">Deepness: <strong>2</strong></p>
      <p class="deepnessIndicator">Deepness: <strong>2</strong></p>
      <p class="deepnessIndicator">Deepness: <strong>2</strong></p>

      <div class="deepnessContainer">
        next-level:

        <p class="deepnessIndicator">Deepness: <strong>3</strong></p>
        <p class="deepnessIndicator">Deepness: <strong>3</strong></p>
        <p class="deepnessIndicator">Deepness: <strong>3</strong></p>
      </div>
    </div>
  </form>

如您所见,申请:

<xsl:apply-templates mode="deepnessHeader" select="./level[$currentLevel]">

匹配  <xsl:template mode="deepnessHeader" match="level">

匹配三次,源XML中每个<level>一次。但是,apply-templates中的选择器应该只选择一个节点呢?

1 个答案:

答案 0 :(得分:2)

使用

<xsl:apply-templates mode="deepnessHeader" 
   select="./level[position()=$currentLevel]">

XSLT 1.0是“弱类型”。 XSLT处理器不知道$currentLevel包含的值应该被视为整数

因此$currentLevel被视为布尔值 - 因为谓词中的任何非整数表达式都应该。但是,如果实际值可以转换为整数,则任何不同于0的整数值都将被视为true(),整个谓词为true(),因此不会过滤掉任何内容。

记住

在XPath 1.0中,任何Expr[someInteger],其中someInteger是整数文字,是:Expr[position() = someInteger]

的简写