XSLT:Select 后续标签进入子段直到下一个标签

XSLT: Select succeeding tags into child segments until next tag

我有以下输入 XML。连续的 E_Records 是可选的,它应该填充到 L_Record 中。我已经编写了以下 XSLT 编码。我需要做哪些更改吗?

输入XML

<?xml version="1.0" encoding="UTF-8"?>
  <Record>
     <H_Record>
        <Rec_Type>H</Rec_Type>
     </H_Record>
     <C_Record>
        <Rec_Type>C</Rec_Type>
     </C_Record>
     <L_Record>
        <Rec_Type>L</Rec_Type>
        <L_Level>2</L_Level>
     </L_Record>
     <E_Record>
        <Rec_Type>E</Rec_Type>
        <E_Qty>3</E_Qty>
     </E_Record>
     <E_Record>
        <Rec_Type>E</Rec_Type>
        <E_Qty>4</E_Qty>
     </E_Record>
     <L_Record>
        <Rec_Type>L</Rec_Type>
        <L_Level>2</L_Level>
     </L_Record>
     <R_Record>
        <Rec_Type>R</Rec_Type>
     </R_Record>
  </Record>
  <Record>
     <H_Record>
        <Rec_Type>H</Rec_Type>
     </H_Record>
     <C_Record>
        <Rec_Type>C</Rec_Type>
     </C_Record>
     <L_Record>
        <Rec_Type>L</Rec_Type>
        <L_Level>2</L_Level>
     </L_Record>
     <L_Record>
        <Rec_Type>L</Rec_Type>
        <L_Level>2</L_Level>
     </L_Record>
     <E_Record>
        <Rec_Type>E</Rec_Type>
        <E_Qty>1</E_Qty>
     </E_Record>
     <E_Record>
        <Rec_Type>E</Rec_Type>
        <E_Qty>2</E_Qty>
     </E_Record>
     <L_Record>
        <Rec_Type>L</Rec_Type>
        <L_Level>2</L_Level>
     </L_Record>
     <E_Record>
        <Rec_Type>E</Rec_Type>
        <E_Qty>5</E_Qty>
     </E_Record>
     <E_Record>
        <Rec_Type>E</Rec_Type>
        <E_Qty>6</E_Qty>
     </E_Record>
     <R_Record>
        <Rec_Type>R</Rec_Type>
     </R_Record>
  </Record>

我期望的输出 XML 是

 <Record>
   <H_Record>
        <Rec_Type>H</Rec_Type>
   </H_Record>
   <C_Record>
        <Rec_Type>C</Rec_Type>
   </C_Record>
   <L_Record>
        <Rec_Type>L</Rec_Type>
        <L_Level>2</L_Level>
      <E_Record>
        <Rec_Type>E</Rec_Type>
        <E_Qty>3</E_Qty>
      </E_Record>
      <E_Record>
        <Rec_Type>E</Rec_Type>
        <E_Qty>4</E_Qty>
      </E_Record>
    </L_Record>
    <L_Record>
       <Rec_Type>L</Rec_Type>
       <L_Level>2</L_Level>
    </L_Record>
    <R_Record>
       <Rec_Type>R</Rec_Type>
    </R_Record>
  </Record>
  <Record>
     <H_Record>
        <Rec_Type>H</Rec_Type>
     </H_Record>
     <C_Record>
        <Rec_Type>C</Rec_Type>
     </C_Record>
     <L_Record>
        <Rec_Type>L</Rec_Type>
        <L_Level>2</L_Level>
     </L_Record>
     <L_Record>
        <Rec_Type>L</Rec_Type>
        <L_Level>2</L_Level>      
       <E_Record>
        <Rec_Type>E</Rec_Type>
        <E_Qty>1</E_Qty>
       </E_Record>
       <E_Record>
        <Rec_Type>E</Rec_Type>
        <E_Qty>2</E_Qty>
       </E_Record>
     </L_Record>
     <L_Record>
        <Rec_Type>L</Rec_Type>
        <L_Level>2</L_Level>      
        <E_Record>
          <Rec_Type>E</Rec_Type>
          <E_Qty>5</E_Qty>
        </E_Record>
        <E_Record>
          <Rec_Type>E</Rec_Type>
          <E_Qty>6</E_Qty>
        </E_Record>
    </L_Record>
    <R_Record>
        <Rec_Type>R</Rec_Type>
     </R_Record>
  </Record>

我已经为此编写了 XSLT 映射,如下所示,但我没有得到所需的输出。你能帮我解决这个问题吗?

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output indent="yes"/>
  <xsl:strip-space elements="*"/>

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

  <xsl:template match="Record">
    <xsl:copy>
      <xsl:apply-templates select="@*"/>
      <xsl:for-each-group select="*" group-starting-with="L_Record">
        <xsl:copy>
          <xsl:apply-templates select="@*,node(),current-group()[self::E_Record]"/>          
        </xsl:copy>
      </xsl:for-each-group>
    </xsl:copy>
  </xsl:template>

</xsl:stylesheet>

请帮我解决这个问题?
当我执行上面的代码时,C_Record 和 R_Record 被删除。如何在输出中填充该数据?

一种常见的方法是继续使用 for-each-group group-starting-with,但随后在内部添加一个额外的检查是否匹配(例如在 L_Record 上):

  <xsl:template match="Record">
    <xsl:copy>
      <xsl:apply-templates select="@*"/>
      <xsl:for-each-group select="*" group-starting-with="L_Record">
        <xsl:choose>
            <xsl:when test="self::L_Record">
                <xsl:copy>
                  <xsl:apply-templates select="@*,node(),current-group()[self::E_Record]"/>          
                </xsl:copy>
                <xsl:apply-templates select="current-group()[not(self::L_Record | self::E_Record)]"/>
            </xsl:when>
            <xsl:otherwise>
                <xsl:apply-templates select="current-group()"/>
            </xsl:otherwise>
        </xsl:choose>
      </xsl:for-each-group>
    </xsl:copy>
  </xsl:template>

https://xsltfiddle.liberty-development.net/bFWRApc/1 是您上一个问题的代码示例的扩展。