在XSLT中执行查找

Question

运行下面的xml和xslt并获取底部的输出。具有黑色背景的列活动正确名称手动添加以提供期望的输出活动名称此时产生错误值的列。我想实施以下逻辑。

伪;

• 选择记录其中级别 ==开始
  • 设置ActivityName = 说明
  • 捕捉ActivityId和ActivityName到内存中以便日后查找
• 集基于捕获的记录，其中ActivityId每条记录​​的ActivityName匹配

你也可以在.NET Fiddle找到C＃完成逻辑

XML

<?xml version="1.0" encoding="UTF-8"?> 
<?xml-stylesheet type="text/xsl" href="test.xsl" ?> 
<root> 
<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent"> 
    <System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system"> 
     <SubType Name="Information">0</SubType> 
     <Correlation ActivityID="a54221e2-ad37-434a-8f0d-101f7abc2221" /> 
    </System> 
    <ApplicationData>Test21</ApplicationData> 
</E2ETraceEvent> 
<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent"> 
    <System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system"> 
     <SubType Name="Information">0</SubType> 
     <Correlation ActivityID="d30741c2-da73-434a-8f0d-101f7ceb2228" /> 
    </System> 
    <ApplicationData>Test24</ApplicationData> 
</E2ETraceEvent> 
<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent"> 
    <System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system"> 
     <SubType Name="Start">0</SubType> 
     <Correlation ActivityID="00000000-0000-0000-0000-000000000000" /> 
    </System> 
    <ApplicationData>Alpha</ApplicationData> 
</E2ETraceEvent> 
<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent"> 
    <System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system"> 
     <SubType Name="Information">0</SubType> 
     <Correlation ActivityID="00000000-0000-0000-0000-000000000000" /> 
    </System> 
    <ApplicationData>Test31</ApplicationData> 
</E2ETraceEvent> 
<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent"> 
    <System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system"> 
     <SubType Name="Verbose">0</SubType> 
     <Correlation ActivityID="3b081a36-43d5-4ecc-b381-628c33316205" /> 
    </System> 
    <ApplicationData>Test51</ApplicationData> 
</E2ETraceEvent> 
<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent"> 
    <System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system"> 
     <SubType Name="Start">0</SubType> 
     <Correlation ActivityID="aa5a5b9c-4b24-43af-9f49-32656385e17d" /> 
    </System> 
    <ApplicationData>Bravo</ApplicationData> 
</E2ETraceEvent> 
<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent"> 
    <System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system"> 
     <SubType Name="Start">0</SubType> 
     <Correlation ActivityID="d30741c2-da73-434a-8f0d-101f7ceb2228" /> 
    </System> 
    <ApplicationData>Charlie</ApplicationData> 
</E2ETraceEvent> 
<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent"> 
    <System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system"> 
     <SubType Name="Error">0</SubType> 
     <Correlation ActivityID="aa5a5b9c-4b24-43af-9f49-32656385e17d" /> 
    </System> 
    <ApplicationData>Test71</ApplicationData> 
</E2ETraceEvent> 
<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent"> 
    <System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system"> 
     <SubType Name="Transfer">0</SubType> 
     <Correlation ActivityID="00000000-0000-0000-0000-000000000000" /> 
    </System> 
    <ApplicationData>Test41</ApplicationData> 
</E2ETraceEvent>  
</root> 

XSLT

<?xml version="1.0" encoding="utf-8"?> 

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
       xmlns:te="http://schemas.microsoft.com/2004/06/E2ETraceEvent" 
       xmlns:s="http://schemas.microsoft.com/2004/06/windows/eventlog/system" 
       xmlns:sd="http://schemas.microsoft.com/2004/08/System.Diagnostics" 
       xmlns:tr="http://schemas.microsoft.com/2004/10/E2ETraceEvent/TraceRecord" 
       exclude-result-prefixes="te s sd tr"> 
    <xsl:output method="html" indent="no"/> 

    <xsl:template match="/"> 
     <html> 
      <head>     
      </head> 
      <body> 
       <div> 
        <div> 
        <table> 
         <thead> 
          <tr>         
           <th>Description</th> 
           <th>Level</th> 
           <th>Activity Name</th> 
           <th>Activity ID</th> 
          </tr> 
         </thead> 
         <tbody>      
          <xsl:for-each select="//te:E2ETraceEvent"> 

          <xsl:variable name="level"> 
           <xsl:value-of select=".//s:SubType/@Name"/> 
          </xsl:variable> 

          <xsl:variable name="description"> 
           <xsl:value-of select=".//te:ApplicationData/text()"/> 
          </xsl:variable> 

          <tr> 
           <!-- APPLICATION DATA --> 
           <td> 
            <xsl:value-of select="$description"/> 
           </td> 

           <!-- LEVEL --> 
           <td> 
            <xsl:value-of select="$level"/>          
           </td> 

           <!-- ACTIVITY NAME --> 
           <td> 
            <xsl:value-of select="((. | preceding-sibling::te:E2ETraceEvent)[s:System/s:SubType/@Name='Start'])[last()]/te:ApplicationData"/> 
           </td> 

           <!-- ACTIVITY ID --> 
           <td> 
            <xsl:value-of select=".//s:Correlation/@ActivityID"/>          
           </td> 
          </tr> 
         </xsl:for-each> 
         </tbody> 
        </table> 
        </div> 
       </div> 
      </body> 
     </html> 
    </xsl:template> 
</xsl:stylesheet> 

输出

Answer 1

你的伪代码是一个有点神秘（像有没有记录，其中等级==开始）。另外，XSLT不能这样工作。在XSLT中，使用key来完成查找。

尝试添加以下内容到样式表的顶层：

<xsl:key name="start" match="te:E2ETraceEvent[s:System/s:SubType/@Name='Start']" use="s:System/s:Correlation/@ActivityID" /> 

，然后将此列添加到您的表：

<td> 
    <xsl:value-of select="key('start', s:System/s:Correlation/@ActivityID)/te:ApplicationData"/>  
</td>