涉及属性的XSLT排序和分组

I have an XML file that looks like this example:

我有一个XML文件，看起来像这个例子：

<Data>
  <defect>
    <record-id>1</record-id>
    <custom-field-value field-name="Release Version" field-value="1.0"/>
    <custom-field-value field-name="Other info" field-value=""/>
    <custom-field-value field-name="More info" field-value="blah"/>

    <event include-in-release-notes="yes">
      <notes>This is a release note to include</notes>
    </event>

    <event include-in-release-notes="no">
      <notes>This is not a release note</notes>
    </event>
  </defect>

  <defect>
    <record-id>2</record-id>
    <custom-field-value field-name="Release Version" field-value="1.5"/>
    <custom-field-value field-name="Other info" field-value=""/>
    <custom-field-value field-name="More info" field-value="blah"/>

    <event include-in-release-notes="yes">
      <notes>This is a release note to include for 1.5</notes>
    </event>

    <event include-in-release-notes="no">
      <notes>This is not a release note</notes>
    </event>
  </defect>
</Data>

What I'm trying to do is create a release notes document that first sorts and finds all of the unique @field-value values of the elements that have the @field-name equal to "Release Version". There may be other elements that do not pertain to release version. Here is the output I'm looking for:

我要做的是创建一个发行说明文档，该文档首先排序并找到@ field-name等于“Release Version”的元素的所有唯一@ field-value值。可能还有其他与发布版本无关的元素。这是我正在寻找的输出：

Release Version: 1.0
  o This is a release note to include
Release Version: 1.5
  o This is a release note to include for 1.5
Release Verison: x.x
  o one release note
  o another release note

I've read up a bunch about the "Muenchian" method and sorting and grouping, but I'm struggling with the fact that I have attributes I need to compare to. Most of the examples I've read discuss sorting on elements which seems much more intuitive. And I need to find and sort on multiple attributes, well, my head just starts to explode.

我已经阅读了一堆关于“Muenchian”方法以及排序和分组的内容，但我正在努力解决我需要比较的属性这一事实。我读过的大多数例子讨论了对元素进行排序，这些元素看起来更直观。我需要找到并排序多个属性，好吧，我的头开始爆炸。

I've come up with stylesheets that will give me ALL of the elements that have "Release Version" as the text using:

我想出了样式表，它会给我所有使用“Release Version”作为文本的元素：

<xsl:key name="keyMajorReleases" match="custom-field-value" use="@field-name"/>
<xsl:for-each select=key('keyMajorReleases', 'Release Version')">
  <xsl:sort order="descending" data-type="text" select="@field-value"/>

But that gives them ALL to me, not just the unique ones. And then I haven't figured out how to get the 'event' element that has the release note I need to print.

但这给了我们所有人，而不仅仅是独特的。然后我还没弄明白如何获得具有我需要打印的发行说明的'event'元素。

When I've tried to use 'generate-id()', I only get ONE result, as I guess there is only ONE unique entry with my value to find:

当我尝试使用'generate-id（）'时，我只得到一个结果，因为我猜我只有一个唯一的条目可以找到我的值：

<xsl:for-each select="//custom-field-value[generate-id(.)=generate-id(key('keyMajorReleases', 'Release Version')[1])]">

1 个解决方案

#1

With your current key...

用你当前的钥匙......

<xsl:key name="keyMajorReleases" match="custom-field-value" use="@field-name"/>

You would be grouping custom-field-value elements by field-name, which you would do if you wanted to find the distinct field-name values. However, you want to group by the field value attributes for 'Release Versions'. This means you need to define your key like so:

您可以按字段名称对自定义字段值元素进行分组，如果要查找不同的字段名称值，可以执行此操作。但是，您希望按“发行版本”的字段值属性进行分组。这意味着你需要像这样定义你的密钥：

<xsl:key name="keyMajorReleases" match="custom-field-value[@field-name='Release Version']" use="@field-value"/>

With this key, you are matching only on custom-field-value where the field name is 'Release Version'. You can then use this to get the distinct field values attributes, like so:

使用此键，您只能匹配字段名称为“发布版本”的自定义字段值。然后，您可以使用它来获取不同的字段值属性，如下所示：

<xsl:apply-templates 
     select="defect/custom-field-value[@field-name='Release Version']
         [generate-id()=generate-id(key('keyMajorReleases', @field-value)[1])]" />

Then to get your release notes for a given release version, you could then use the key again

然后，要获取给定发行版的发行说明，您可以再次使用该密钥

<xsl:apply-templates 
   select="key('keyMajorReleases', @field-value)
        /following-sibling::event[@include-in-release-notes='yes']" />

Here is the full XSLT

这是完整的XSLT

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:output method="xml" indent="yes"/>
   <xsl:key name="keyMajorReleases" match="custom-field-value[@field-name='Release Version']" use="@field-value"/>
   <xsl:template match="/Data">
      <ul>
         <xsl:apply-templates select="defect/custom-field-value[@field-name='Release Version'][generate-id()=generate-id(key('keyMajorReleases', @field-value)[1])]"/>
      </ul>
   </xsl:template>

   <xsl:template match="custom-field-value">
      <li>Release Version: <xsl:value-of select="@field-value"/>
         <ul>
            <xsl:apply-templates select="key('keyMajorReleases', @field-value)/following-sibling::event[@include-in-release-notes='yes']"/>
         </ul></li>
   </xsl:template>

   <xsl:template match="event">
      <li>
         <xsl:value-of select="notes"/>
      </li>
   </xsl:template>
</xsl:stylesheet>

When applied to your sample XML, the following is output

应用于示例XML时，将输出以下内容

<ul>
   <li>Release Version: 1.0
       <ul>
          <li>This is a release note to include</li>
       </ul>
   </li>
   <li>Release Version: 1.5
      <ul>
         <li>This is a release note to include for 1.5</li>
      </ul>
   </li>
</ul>

#1