将某些与选择节点同级的节点移动到新的父节点中

Question

我在这里进行了一些搜索，发现了一些与我的问题相关的问题，但我仍然遇到问题......（希望我可以添加一个新问题而不是评论现有问题...... )

<?xml version="1.0"?>
<section>
    <title>Main Section</title>
    <para>Here is some text that is a child of a main section.</para>
    <para>Some more text.</para>
    <para>When a section has subsections, it should not have loose paragraphs before the first sub section. Those loose paras should be placed inside a comment element.</para>
    <section>
        <title>This is my subsection</title>
        <para>Text that is inside of the sub-section</para>
        <para>And some more sub section text.</para>
    </section>
</section>

我想将 /section/para 放置在新创建的评论节点中，如下所示：

<?xml version="1.0"?>
<section>
    <title>Main Section</title>
    <comment>
       <para>Here is some text that is a child of a main section.</para>
       <para>Some more text.</para>
       <para>When a section has subsections, it should not have loose paragraphs before the first sub section. Those loose paras should be placed inside a comment element.</para>
    </comment>
    <section>
        <title>This is my subsection</title>
        <para>Text that is inside of the sub-section</para>
        <para>And some more sub section text.</para>
    </section>
</section>

我尝试了一些在stackoverflow中找到的建议，最接近的是here.

这是我正在使用的样式表：

<?xml version='1.0'?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml"/>


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


<!-- paras that are children of a section that has direct para children and dircect section children -->
<xsl:template match="section[para][section]/para[1]">
    <comment>
        <xsl:apply-templates select="../para" mode="commentPara"/>

    </comment>
</xsl:template>

<xsl:template match="*" mode="commentPara">
    <xsl:call-template name="identity"/>
</xsl:template>

<xsl:template match="section[para][section]/para"/>


</xsl:stylesheet>

它正在输出这个：

<?xml version='1.0' ?>
<section>
    <title>Main Section</title>



    <section>
        <title>This is my subsection</title>
        <para>Text that is inside of the sub-section</para>
        <para>And some more sub section text.</para>
    </section>
</section>

只需删除我想要包含在评论标签中的 paras。我尝试在我链接到的问题中逐行浏览样式表......有什么想法吗？ 谢谢， bp

Answer 1

这是对相邻的 para 元素进行分组。

问题出在Conflict Resolution for Template Rules：因为两个para匹配规则具有相同的导入优先级和相同的计算优先级，错误恢复机制可能导致应用最后一个。

您需要在“第一个para 子”规则上明确定义@priority，例如：

<xsl:template match="section[para][section]/para[1]" priority="1">
</

经过这样的修改，输出为：

<?xml version="1.0" encoding="UTF-16"?>
<section>
    <title>Main Section</title>
    <comment>
        <para>Here is some text that is a child of a main section.</para>
        <para>Some more text.</para>
        <para>When a section has subsections, it should not have loose paragraphs before the first sub section. Those loose paras should be placed inside a comment element.</para>
    </comment>
    <section>
        <title>This is my subsection</title>
        <para>Text that is inside of the sub-section</para>
        <para>And some more sub section text.</para>
    </section>
</section>

Answer 2

我会这样做：

<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:key name="kPreceding" match="para"
  use="generate-id(following-sibling::section[1])"/>

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

 <xsl:template match="section[preceding-sibling::para]">
  <comment>
   <xsl:apply-templates mode="copy"
        select="key('kPreceding', generate-id())"/>
  </comment>

  <xsl:call-template name="identity"/>
 </xsl:template>

 <xsl:template match=
  "para[following-sibling::section]"/>

 <xsl:template match="para" mode="copy">
  <xsl:call-template name="identity"/>
 </xsl:template>
</xsl:stylesheet>

当此转换应用于提供的 XML 文档时：

<section>
    <title>Main Section</title>
    <para>Here is some text that is a child of a main section.</para>
    <para>Some more text.</para>
    <para>When a section has subsections, it should not have loose paragraphs before the first sub section. Those loose paras should be placed inside a comment element.</para>
    <section>
        <title>This is my subsection</title>
        <para>Text that is inside of the sub-section</para>
        <para>And some more sub section text.</para>
    </section>
</section>

产生了想要的正确结果：

<section>
   <title>Main Section</title>
   <comment>
      <para>Here is some text that is a child of a main section.</para>
      <para>Some more text.</para>
      <para>When a section has subsections, it should not have loose paragraphs before the first sub section. Those loose paras should be placed inside a comment element.</para>
   </comment>
   <section>
      <title>This is my subsection</title>
      <para>Text that is inside of the sub-section</para>
      <para>And some more sub section text.</para>
   </section>
</section>

解释：

1. 身份规则（模板）“按原样”复制每个节点。

2. 具有前面兄弟para 的section 的覆盖模板使用comment 元素包装所有此类兄弟，然后对其自身调用身份转换。

3. 为方便起见，我们定义了一个键，将section 元素之前的所有para 元素与给定的generate-id() 匹配。

4. 具有以下兄弟section 的para 元素被覆盖模板从身份规则的操作中排除，这根本不做任何事情。

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