XSLT 分组兄弟姐妹 [英] XSLT Grouping Siblings

问题描述

我正在尝试将 XML 文件中的同级数据分组.

I am trying to group sibling data in an XML file.

给定:

<?xml version="1.0" encoding="UTF-8"?>
<data>
    <competition>
        <timeline>10:00</timeline>
        <fixture>team a v team b</fixture>
        <fixture>team c v team d</fixture>
        <timeline>12:00</timeline>
        <fixture>team e v team f</fixture>
        <timeline>16:00</timeline>
        <fixture>team g v team h</fixture>
        <fixture>team i v team j</fixture>
        <fixture>team k v team l</fixture>
    </competition>
</data>

我正在尝试制作:

<?xml version="1.0" encoding="UTF-8"?>
<data>
    <competition>
        <timeline time="10:00">
            <fixture>team a v team b</fixture>
            <fixture>team c v team d</fixture>
        </timeline>
        <timeline time="12:00">
            <fixture>team e v team f</fixture>
        </timeline>
        <timeline time="16:00">
            <fixture>team g v team h</fixture>
            <fixture>team i v team j</fixture>
            <fixture>team k v team l</fixture>
        </timeline>
    </competition>
</data>

我正在使用以下 XSLT:

I am using the following XSLT:

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

    <xsl:template match="competition" >

        <xsl:apply-templates select="timeline" />

    </xsl:template>

    <xsl:template match="timeline">
        <timeline>
            <xsl:attribute name="time" >
                <xsl:value-of select="." />
            </xsl:attribute>

            <xsl:apply-templates select="following-sibling::*" mode="copy"/>

        </timeline>
    </xsl:template>

    <xsl:template match="fixture" mode="copy">
        <fixture>
            <xsl:value-of select="." />
        </fixture>
    </xsl:template>

    <xsl:template match="timeline" mode="copy">
        <xsl:apply-templates select="following-sibling::*" mode="null" />
    </xsl:template>

    <xsl:template match="*" mode="null">
    </xsl:template>
</xsl:stylesheet>

我的问题是当它到达下一个时间线时它没有停止处理夹具节点

My problem is that it is not stopping processing fixture nodes when it gets to the next timeline

推荐答案

如果以下条件成立(我认为是这样)，这很容易做到:

This is easy to do when the following is true (which I assume it is):

• 中的所有 都是唯一的
• 只有紧跟在给定之后的属于它
• 没有 之前没有 元素

• all <timeline>s within a <competition> are unique
• only the <fixture>s right after a given <timeline> belong to it
• there is no <fixture> without a <timeline> element before it

这个 XSLT 1.0 解决方案:

This XSLT 1.0 solution:

<xsl:stylesheet
  version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>

  <xsl:key name="kFixture" 
           match="fixture" 
           use="generate-id(preceding-sibling::timeline[1])" 
  />

  <xsl:template match="data">
    <xsl:copy>
      <xsl:apply-templates select="competition" />
    </xsl:copy>
  </xsl:template>

  <xsl:template match="competition">
    <xsl:copy>
      <xsl:apply-templates select="timeline" />
    </xsl:copy>
  </xsl:template>

  <xsl:template match="timeline">
    <xsl:copy>
      <xsl:attribute name="time">
        <xsl:value-of select="." />
      </xsl:attribute>
      <xsl:copy-of select="key('kFixture', generate-id())" />
    </xsl:copy>
  </xsl:template>

</xsl:stylesheet>

产生:

<data>
  <competition>
    <timeline time="10:00">
      <fixture>team a v team b</fixture>
      <fixture>team c v team d</fixture>
    </timeline>
    <timeline time="12:00">
      <fixture>team e v team f</fixture>
    </timeline>
    <timeline time="16:00">
      <fixture>team g v team h</fixture>
      <fixture>team i v team j</fixture>
      <fixture>team k v team l</fixture>
    </timeline>
    </competition>
</data>

注意使用 来匹配所有属于(前面是")给定 ><时间线>.

Note the use of an <xsl:key> to match all <fixture>s that belong to ("are preceded by") a given <timeline>.

一个稍短但不太明显的解决方案是修改身份转换:

A slightly shorter but less obvious solution would be a modified identity transform:

<xsl:stylesheet
  version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>

  <xsl:key name="kFixture" 
           match="fixture" 
           use="generate-id(preceding-sibling::timeline[1])" 
  />

  <xsl:template match="* | @*">
    <xsl:copy>
      <xsl:apply-templates select="*[not(self::fixture)] | @*" />
    </xsl:copy>
  </xsl:template>

  <xsl:template match="timeline">
    <xsl:copy>
      <xsl:attribute name="time">
        <xsl:value-of select="." />
      </xsl:attribute>
      <xsl:copy-of select="key('kFixture', generate-id())" />
    </xsl:copy>
  </xsl:template>

</xsl:stylesheet>

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