xml - Muenchian 分组 - 在节点内分组，而不是在整个文档内分组

Question

我试图在我的 XSLT 中使用 Muenchian 分组来对匹配的节点进行分组，但我只想在父节点内进行分组，而不是在整个源 XML 文档中进行分组。

给定 XSLT 和 XML 如下(对我的示例代码的长度表示歉意):

XSLT

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl"> 
 <xsl:output method="html" indent="yes"/>

 <xsl:key name="contacts-by-surname" match="contact" use="surname" />
 <xsl:template match="records">
  <xsl:for-each select="contact[count(. | key('contacts-by-surname', surname)[1]) = 1]">
   <xsl:sort select="surname" />
   <xsl:value-of select="surname" />,<br />
   <xsl:for-each select="key('contacts-by-surname', surname)">
    <xsl:sort select="forename" />
    <xsl:value-of select="forename" /> (<xsl:value-of select="title" />)<br />
   </xsl:for-each>
  </xsl:for-each>
 </xsl:template>
</xsl:stylesheet>

XML

<root>
 <records>
  <contact id="0001">
   <title>Mr</title>
   <forename>John</forename>
   <surname>Smith</surname>
  </contact>
  <contact id="0002">
   <title>Dr</title>
   <forename>Amy</forename>
   <surname>Jones</surname>
  </contact>
  <contact id="0003">
   <title>Mrs</title>
   <forename>Mary</forename>
   <surname>Smith</surname>
  </contact>
  <contact id="0004">
   <title>Ms</title>
   <forename>Anne</forename>
   <surname>Jones</surname>
  </contact>
  <contact id="0005">
   <title>Mr</title>
   <forename>Peter</forename>
   <surname>Smith</surname>
  </contact>
  <contact id="0006">
   <title>Dr</title>
   <forename>Indy</forename>
   <surname>Jones</surname>
  </contact>
 </records>
 <records>
  <contact id="0001">
   <title>Mr</title>
   <forename>James</forename>
   <surname>Smith</surname>
  </contact>
  <contact id="0002">
   <title>Dr</title>
   <forename>Mandy</forename>
   <surname>Jones</surname>
  </contact>
  <contact id="0003">
   <title>Mrs</title>
   <forename>Elizabeth</forename>
   <surname>Smith</surname>
  </contact>
  <contact id="0004">
   <title>Ms</title>
   <forename>Sally</forename>
   <surname>Jones</surname>
  </contact>
  <contact id="0005">
   <title>Mr</title>
   <forename>George</forename>
   <surname>Smith</surname>
  </contact>
  <contact id="0006">
   <title>Dr</title>
   <forename>Harry</forename>
   <surname>Jones</surname>
  </contact>
 </records>
</root>

结果

Jones,
Amy (Dr)
Anne (Ms)
Harry (Dr)
Indy (Dr)
Mandy (Dr)
Sally (Ms)

Smith,
Elizabeth (Mrs)
George (Mr)
James (Mr)
John (Mr)
Mary (Mrs)
Peter (Mr)

如何在每个 <records> 中分组并实现这个结果:

Jones,
Amy (Dr)
Anne (Ms)
Indy (Dr)

Smith,
John (Mr)
Mary (Mrs)
Peter (Mr)

Jones,
Harry (Dr)
Mandy (Dr)
Sally (Ms)

Smith,
Elizabeth (Mrs)
George (Mr)
James (Mr)

Answer 1

花了我一些时间......我正要放弃但仍然继续:)

键函数的缺点是生成的键总是针对整个xml。因此，您应该在 key 中连接其他信息以使其更具体。在例如下面，我连接了记录节点的位置，以便为每条记录获取不同姓氏的键。

这是 xslt:

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl">
  <xsl:output method="html" indent="yes"/>
  <xsl:key name="distinct-surname" match="contact" use="concat(generate-id(..), '|', surname)"/>
  <xsl:template match="records">
    <xsl:for-each select="contact[generate-id() = generate-id(key('distinct-surname', concat(generate-id(..), '|', surname))[1])]">
      <xsl:sort select="surname" />
      <xsl:value-of select="surname" />,<br />
      <xsl:for-each select="key('distinct-surname', concat(generate-id(..), '|', surname))">
        <xsl:sort select="forename" />
        <xsl:value-of select="forename" /> (<xsl:value-of select="title" />)<br />
      </xsl:for-each>
    </xsl:for-each>
  </xsl:template>  
</xsl:stylesheet>

这是结果:

Jones,
Amy (Dr)
Anne (Ms)
Indy (Dr)
Smith,
John (Mr)
Mary (Mrs)
Peter (Mr)
Jones,
Harry (Dr)
Mandy (Dr)
Sally (Ms)
Smith,
Elizabeth (Mrs)
George (Mr)
James (Mr)

请注意，结果也是按名字排序的。如果不想按名字排序，则需要删除 <xsl:sort select="forename" /> 行