xslt - 使用 xsl:for-each-group

Question

这是我的要求。我的示例输入文档如下所示。（我添加了白线以使其清晰）

<body>
       <p name="h-title" other="main">Introduction</p>
       <p name="h-titledesc " other="other-desc">XSLT and XQuery</p>


       <p name=""> XSLT is used to write stylesheets.</p>
    <p name="section-title" other=" other-section">XSLT</p>
    <p name="section-desc" other=" other-sectionsdesc">XSLT</p>
    <p name=""> Some text.</p>
    <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>
    <p name="h1-title" other=" other-h1">XSLT</p>
    <p name=""> Some text.</p>
       <p name="h2-title " name="other-h2">XQuery</p>
       <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>
       <p name="h3-title" name="other-h3">XQuery and stylesheets</p>
       <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>


    <p name="section-title" other=" other-section">XSLT</p>
    <p name="section-desc" other=" other-sectionsdesc">XSLT</p>
    <p name=""> Some text.</p>
    <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>
    <p name="h1-title" other=" other-h1">XSLT</p>
    <p name=""> Some text.</p>
       <p name="h2-title " name="other-h2">XQuery</p>
       <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>
       <p name="h3-title" name="other-h3">XQuery and stylesheets</p>
       <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>


       <p name ="summary-title">this is summary</p>
       <p name="summary-desc " other="other-summarydesc">the summary</p>
    </body>

现在我想要的输出是这个。

<body>
       <p name="h-title" other="main">Introduction</p>
       <p name="h-titledesc " other="other-desc">XSLT and XQuery</p>


       <p name=""> XSLT is used to write stylesheets.</p>

    <body-contents>
        <p name="section-title" other=" other-section">XSLT</p>
        <p name="section-desc" other=" other-sectionsdesc">XSLT</p>
        <p name=""> Some text.</p>
        <p name="">
              <p1 name="bold"> XQuery is used to query XML databases.</p1>
           </p>
        <h1>
        <p name="h1-title" other=" other-h1">XSLT</p>
        <p name=""> Some text.</p>
        <h2>
           <p name="h2-title " name="other-h2">XQuery</p>
           <p name="">
              <p1 name="bold"> XQuery is used to query XML databases.</p1>
           </p>
        <h3>
           <p name="h3-title" name="other-h3">XQuery and stylesheets</p>
           <p name="">
              <p1 name="bold"> XQuery is used to query XML databases.</p1>
           </p>
        </h3>
    </h2>
    </h1>
    </body-contents>
    <body-contents>
        <p name="section-title" other=" other-section">XSLT</p>
        <p name="section-desc" other=" other-sectionsdesc">XSLT</p>
        <p name=""> Some text.</p>
        <p name="">
              <p1 name="bold"> XQuery is used to query XML databases.</p1>
           </p>
        <h1>
        <p name="h1-title" other=" other-h1">XSLT</p>
        <p name=""> Some text.</p>
        <h2>
           <p name="h2-title " name="other-h2">XQuery</p>
           <p name="">
              <p1 name="bold"> XQuery is used to query XML databases.</p1>
           </p>
        <h3>
           <p name="h3-title" name="other-h3">XQuery and stylesheets</p>
           <p name="">
              <p1 name="bold"> XQuery is used to query XML databases.</p1>
           </p>
        </h3>
    </h2>
    </h1>

    </body-contents>
    <body-contents>
           <p name ="summary-title">this is summary</p>
           <p name="summary-desc " other="other-summarydesc">the summary</p>
    </body-contents>
    </body>

请帮我解决这个问题。

{可选有如下限制：

h1、h2、h3 依次出现（也就是说，h3 不在 h1 和 h2 之间）
name="section-title" 的行应该在 name="section-desc" 之前
h1、h2、h3 等应该在 section-desc 之后。

我在这里解决了 h1、h2、h3 等的问题。我知道这很了不起。任何帮助都很棒。

如果违反这些规则，则不应发生转换。}

score 3 · Accepted Answer

这是我对先前发布的样式表的改编，它只是group-starting-with在调用递归函数对级别进行分组之前进行了附加操作。我意识到这与您在之前的帖子中提出的建议相同，但到目前为止，我不清楚为什么该建议对您不起作用。

所以这里是样式表：

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  xmlns:mf="http://example.com/mf"
  exclude-result-prefixes="xs mf">

<xsl:param name="prefix" as="xs:string" select="'h'"/>
<xsl:param name="suffix" as="xs:string" select="'-title'"/>

<xsl:output method="xml" version="1.0" indent="yes"/>

<xsl:function name="mf:group" as="node()*">
  <xsl:param name="items" as="node()*"/>
  <xsl:param name="level" as="xs:integer"/>
  <xsl:for-each-group select="$items" group-starting-with="p[@name = concat($prefix, $level, $suffix)]">
    <xsl:choose>
      <xsl:when test="not(self::p[@name = concat($prefix, $level, $suffix)])">
        <xsl:apply-templates select="current-group()"/>
      </xsl:when>
      <xsl:otherwise>
        <xsl:element name="h{$level}">
          <xsl:apply-templates select="."/>
          <xsl:sequence select="mf:group(current-group() except ., $level + 1)"/>
        </xsl:element>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:for-each-group>
</xsl:function>

<xsl:template match="@* | node()">
  <xsl:copy>
    <xsl:apply-templates select="@* , node()"/>
  </xsl:copy>
</xsl:template>

<xsl:template match="body">
  <xsl:copy>
    <xsl:for-each-group select="*" group-starting-with="p[@name = 'section-title' or @name = 'summary-title']">
      <xsl:choose>
        <xsl:when test="not(self::p[@name = 'section-title' or @name = 'summary-title'])">
          <xsl:apply-templates select="current-group()"/>
        </xsl:when>
        <xsl:otherwise>
          <body-contents>
             <xsl:sequence select="mf:group(current-group(), 1)"/>
          </body-contents>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:for-each-group>
  </xsl:copy>
</xsl:template>

</xsl:stylesheet>

当我将带有 Saxon 9.4 的样式表应用于更正的输入时

<body>
       <p name="h-title" other="main">Introduction</p>
       <p name="h-titledesc " other="other-desc">XSLT and XQuery</p>


       <p name=""> XSLT is used to write stylesheets.</p>
    <p name="section-title" other=" other-section">XSLT</p>
    <p name="section-desc" other=" other-sectionsdesc">XSLT</p>
    <p name=""> Some text.</p>
    <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>
    <p name="h1-title" other=" other-h1">XSLT</p>
    <p name=""> Some text.</p>
       <p name="h2-title" other="other-h2">XQuery</p>
       <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>
       <p name="h3-title" other="other-h3">XQuery and stylesheets</p>
       <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>


    <p name="section-title" other=" other-section">XSLT</p>
    <p name="section-desc" other=" other-sectionsdesc">XSLT</p>
    <p name=""> Some text.</p>
    <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>
    <p name="h1-title" other=" other-h1">XSLT</p>
    <p name=""> Some text.</p>
       <p name="h2-title" other="other-h2">XQuery</p>
       <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>
       <p name="h3-title" other="other-h3">XQuery and stylesheets</p>
       <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>


       <p name ="summary-title">this is summary</p>
       <p name="summary-desc " other="other-summarydesc">the summary</p>
    </body>

我得到输出

<body>
   <p name="h-title" other="main">Introduction</p>
   <p name="h-titledesc " other="other-desc">XSLT and XQuery</p>
   <p name=""> XSLT is used to write stylesheets.</p>
   <body-contents>
      <p name="section-title" other=" other-section">XSLT</p>
      <p name="section-desc" other=" other-sectionsdesc">XSLT</p>
      <p name=""> Some text.</p>
      <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>
      <h1>
         <p name="h1-title" other=" other-h1">XSLT</p>
         <p name=""> Some text.</p>
         <h2>
            <p name="h2-title" other="other-h2">XQuery</p>
            <p name="">
               <p1 name="bold"> XQuery is used to query XML databases.</p1>
            </p>
            <h3>
               <p name="h3-title" other="other-h3">XQuery and stylesheets</p>
               <p name="">
                  <p1 name="bold"> XQuery is used to query XML databases.</p1>
               </p>
            </h3>
         </h2>
      </h1>
   </body-contents>
   <body-contents>
      <p name="section-title" other=" other-section">XSLT</p>
      <p name="section-desc" other=" other-sectionsdesc">XSLT</p>
      <p name=""> Some text.</p>
      <p name="">
          <p1 name="bold"> XQuery is used to query XML databases.</p1>
       </p>
      <h1>
         <p name="h1-title" other=" other-h1">XSLT</p>
         <p name=""> Some text.</p>
         <h2>
            <p name="h2-title" other="other-h2">XQuery</p>
            <p name="">
               <p1 name="bold"> XQuery is used to query XML databases.</p1>
            </p>
            <h3>
               <p name="h3-title" other="other-h3">XQuery and stylesheets</p>
               <p name="">
                  <p1 name="bold"> XQuery is used to query XML databases.</p1>
               </p>
            </h3>
         </h2>
      </h1>
   </body-contents>
   <body-contents>
      <p name="summary-title">this is summary</p>
      <p name="summary-desc " other="other-summarydesc">the summary</p>
   </body-contents>
</body>

请下次提供输入样本时确保其格式正确，到目前为止，您总是发布类似的内容<p name="h2-title " name="other-h2">XQuery</p>，并且不可能有两个相同名称的属性。

xslt - 使用 xsl:for-each-group

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