仅剥离空根元素

Question

我有一个输入XML,看起来像这样,并希望使用XSL转换如下所示的所需输出.我一直在浏览博客但是找不到任何关于如何删除匹配根元素而不是子节点的空标签的相关性.

<?xml version="1.0" encoding="UTF-8"?>
<objects xmlns="urn:sobject.partner.soap.sforce.com">
  <Revenue__c/>
  <Revenue__c/>
  <Revenue__c/>
  <Revenue__c>
    <Sales_Org_ID__c>IV</Sales_Org_ID__c>
    <Branch_ID__c>1</Branch_ID__c>
    <Branch_Name__c>TEST</Branch_Name__c>
    <Therapy_Code__c>TEST</Therapy_Code__c>
    <Therapy_Name__c>TEST</Therapy_Name__c>
    <Therapy_Class_Code__c>TEST</Therapy_Class_Code__c>
    <Therapy_Class_Name__c>TEST</Therapy_Class_Name__c>
    <Payor_Type_Name__c>TEST</Payor_Type_Name__c>
    <Calendar_Year_Number__c>2011</Calendar_Year_Number__c>
    <Month_Revenue_Amount__c>100.01</Month_Revenue_Amount__c>
    <Payor_ID__c>TEST</Payor_ID__c>
    <Payor_Name__c/>
    <Payor_Type_Code__c>TEST</Payor_Type_Code__c>
    <MDM_Account_EID__c>66600001</MDM_Account_EID__c>
    <MDM_Physician_EID__c>99900001</MDM_Physician_EID__c>
    <Account__c>001a000001APU5OAAX</Account__c>
    <Contact__c>003a000001RL1EFAA1</Contact__c>
    <Revenue_ID__c>41</Revenue_ID__c>
    <Calendar_Year_Month__c>01</Calendar_Year_Month__c>
  </Revenue__c>
</objects>

这正是我想要的:

<?xml version="1.0" encoding="UTF-8"?>
<objects xmlns="urn:sobject.partner.soap.sforce.com">
  <Revenue__c>
    <Sales_Org_ID__c>IV</Sales_Org_ID__c>
    <Branch_ID__c>1</Branch_ID__c>
    <Branch_Name__c>TEST</Branch_Name__c>
    <Therapy_Code__c>TEST</Therapy_Code__c>
    <Therapy_Name__c>TEST</Therapy_Name__c>
    <Therapy_Class_Code__c>TEST</Therapy_Class_Code__c>
    <Therapy_Class_Name__c>TEST</Therapy_Class_Name__c>
    <Payor_Type_Name__c>TEST</Payor_Type_Name__c>
    <Calendar_Year_Number__c>2011</Calendar_Year_Number__c>
    <Month_Revenue_Amount__c>100.01</Month_Revenue_Amount__c>
    <Payor_ID__c>TEST</Payor_ID__c>
    <Payor_Name__c/>
    <Payor_Type_Code__c>TEST</Payor_Type_Code__c>
    <MDM_Account_EID__c>66600001</MDM_Account_EID__c>
    <MDM_Physician_EID__c>99900001</MDM_Physician_EID__c>
    <Account__c>001a000001APU5OAAX</Account__c>
    <Contact__c>003a000001RL1EFAA1</Contact__c>
    <Revenue_ID__c>41</Revenue_ID__c>
    <Calendar_Year_Month__c>01</Calendar_Year_Month__c>
  </Revenue__c>
</objects>

任何建议将不胜感激.

Answer 1

这可能是最简单/最短的解决方案,同时完全是"推送风格",并且是最可扩展和可维护的 - 没有硬编码的元素名称,没有文字结果元素,没有名称空间,没有xsl:copy-of:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:output omit-xml-declaration="yes" indent="yes"/>
 <xsl:strip-space elements="*"/>

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

在提供的XML文档上应用此转换时:

<objects xmlns="urn:sobject.partner.soap.sforce.com">
    <Revenue__c/>
    <Revenue__c/>
    <Revenue__c/>
    <Revenue__c>
        <Sales_Org_ID__c>IV</Sales_Org_ID__c>
        <Branch_ID__c>1</Branch_ID__c>
        <Branch_Name__c>TEST</Branch_Name__c>
        <Therapy_Code__c>TEST</Therapy_Code__c>
        <Therapy_Name__c>TEST</Therapy_Name__c>
        <Therapy_Class_Code__c>TEST</Therapy_Class_Code__c>
        <Therapy_Class_Name__c>TEST</Therapy_Class_Name__c>
        <Payor_Type_Name__c>TEST</Payor_Type_Name__c>
        <Calendar_Year_Number__c>2011</Calendar_Year_Number__c>
        <Month_Revenue_Amount__c>100.01</Month_Revenue_Amount__c>
        <Payor_ID__c>TEST</Payor_ID__c>
        <Payor_Name__c/>
        <Payor_Type_Code__c>TEST</Payor_Type_Code__c>
        <MDM_Account_EID__c>66600001</MDM_Account_EID__c>
        <MDM_Physician_EID__c>99900001</MDM_Physician_EID__c>
        <Account__c>001a000001APU5OAAX</Account__c>
        <Contact__c>003a000001RL1EFAA1</Contact__c>
        <Revenue_ID__c>41</Revenue_ID__c>
        <Calendar_Year_Month__c>01</Calendar_Year_Month__c>
    </Revenue__c>
</objects>

产生了想要的正确结果:

<objects xmlns="urn:sobject.partner.soap.sforce.com">
   <Revenue__c>
      <Sales_Org_ID__c>IV</Sales_Org_ID__c>
      <Branch_ID__c>1</Branch_ID__c>
      <Branch_Name__c>TEST</Branch_Name__c>
      <Therapy_Code__c>TEST</Therapy_Code__c>
      <Therapy_Name__c>TEST</Therapy_Name__c>
      <Therapy_Class_Code__c>TEST</Therapy_Class_Code__c>
      <Therapy_Class_Name__c>TEST</Therapy_Class_Name__c>
      <Payor_Type_Name__c>TEST</Payor_Type_Name__c>
      <Calendar_Year_Number__c>2011</Calendar_Year_Number__c>
      <Month_Revenue_Amount__c>100.01</Month_Revenue_Amount__c>
      <Payor_ID__c>TEST</Payor_ID__c>
      <Payor_Name__c/>
      <Payor_Type_Code__c>TEST</Payor_Type_Code__c>
      <MDM_Account_EID__c>66600001</MDM_Account_EID__c>
      <MDM_Physician_EID__c>99900001</MDM_Physician_EID__c>
      <Account__c>001a000001APU5OAAX</Account__c>
      <Contact__c>003a000001RL1EFAA1</Contact__c>
      <Revenue_ID__c>41</Revenue_ID__c>
      <Calendar_Year_Month__c>01</Calendar_Year_Month__c>
   </Revenue__c>
</objects>

说明:

1. 身份规则"按原样"复制为其执行此模板的任何节点.

2. 对于作为顶部元素的子元素且没有子元素的任何元素,有一个模板会覆盖标识模板.该模板没有主体(不产生任何输出),这有效地"删除"了匹配的节点.