xml - XSLT 合并挑战 Pt。二

Question

我有一个带有 2 个客户节点（当前和更新）的 XML 文档。我希望能够遍历并生成生成的 XML 文档，以合并客户及其各种元素（地址、联系人、帐户等）以及归档和父级的状态。解决方案需要能够遍历 n 个子元素，这些子元素本身可能有 n 个子元素。输入 XML 的格式可以更改。如果有帮助，我可以制作 Ids 属性。

输入：

 <Customer Id="Current">
       <CustId>1</CustId>
       <CustName>Acme</CustName>
   <Addresses>
       <Address>
          <AddressId>1</AddressId>
          <Street>111 Main</Street>
      </Address>
      <Address>
          <AddressId>2</AddressId>
          <Street>222 Main</Street>
      </Address>
   <Contacts>
      <Contact>
        <ContactId>1</ContactId>
        <ContactName>Tom</ContactName>
        <ContactPhone>555-1212</ContactPhone>
      </Contact>
   </Contacts>
   </Customer>
     <Customer Id="Updated">
       <CustId>1</CustId>
       <CustName>Acme</CustName>
   <Addresses>
       <Address>
          <AddressId>1</AddressId>
          <Street>111 Main</Street>
      </Address>
      <Address>
          <AddressId>3</AddressId>
          <Street>333 Main</Street>
      </Address>
   <Contacts>
      <Contact>
        <ContactId>1</ContactId>
        <ContactName>Tom</ContactName>
        <ContactPhone>555-1212</ContactPhone>
      </Contact>
   </Contacts>
  </Customer>

输出：

    <Customer Id="Updated" status="Changed">
       <CustId>1</CustId>
       <CustName>Acme</CustName>
       <CustRegion status="New"/>
     <Addresses status="Changed">
       <Address>
          <AddressId>1</AddressId>
          <Street>111 Main</Street>
      </Address>
      <Address Status="Deleted">
          <AddressId>2</AddressId>
          <Street>222 Main</Street>
      </Address>
      <Address Status="New">
          <AddressId status="New">3</AddressId>
          <Street status="New">222 Main</Street>
      </Address>
    <Contacts status="Changed">
      <Contact status="Changed">
        <ContactId>1</ContactId>
        <ContactName>Tom</ContactName>
        <ContactPhone tatus="New">555-1212</ContactPhone>
      </Contact status="New">
   </Contacts>
  </Customer>