排除父及子節點時，某些節點符合條件

Question

下面我有一個初始輸入XML：

<?xml version="1.0" encoding="UTF-8"?> 
<pi:Payroll_Extract_Employees xmlns:pi="urn:com.workday/picof"> 
<pi:Employee> 
    <pi:Summary> 
     <pi:Employee_ID>00000001</pi:Employee_ID> 
    </pi:Summary> 
    <pi:Additional_Information> 
     <pi:Worker_Type>NSW</pi:Worker_Type> 
     <pi:Strike_1>11-sept.-2017,2 Hours=9570</pi:Strike_1> 
    </pi:Additional_Information> 
    </pi:Employee> 
    <pi:Employee> 
    <pi:Summary> 
     <pi:Employee_ID>00000002</pi:Employee_ID> 
    </pi:Summary> 
    <pi:Additional_Information> 
     <pi:Worker_Type>SW</pi:Worker_Type> 
     <pi:Strike_1>22-sept.-2017,8 Hours=9570</pi:Strike_1> 
    </pi:Additional_Information> 
    </pi:Employee> 
</pi:Payroll_Extract_Employees> 

和XSLT：

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
xmlns:xs="http://www.w3.org/2001/XMLSchema" 
exclude-result-prefixes="xs" 
xmlns:pi="urn:com.workday/picof" 
version="2.0"> 

<xsl:output indent="yes" method="xml"/> 
<xsl:strip-space elements="*"/> 

<xsl:template match="/"> 
    <pi:Payroll_Extract_Employees> 
     <xsl:for-each select="//pi:Employee"> 
     <pi:Employee> 
      <xsl:copy-of select="pi:Summary"/> 
      <xsl:apply-templates select="pi:Additional_Information/*"/> 
     </pi:Employee> 
     </xsl:for-each> 
    </pi:Payroll_Extract_Employees>  
</xsl:template> 

<xsl:template match="pi:Additional_Information/*"> 
    <xsl:apply-templates select="ancestor::pi:Payroll_Extract_Employees"> 
     <xsl:with-param name="UnpaidTO" select="current()"/> 
    </xsl:apply-templates> 
</xsl:template> 

<xsl:template match="pi:Payroll_Extract_Employees"> 
    <xsl:param name="UnpaidTO"/> 
     <pi:Time_Off> 
      <pi:Code_Name>Unpaid Time Off</pi:Code_Name> 
      <pi:Time_Off_Type><xsl:value-of select="substring-after($UnpaidTO,'=')"/></pi:Time_Off_Type> 
      <pi:Time_Off_Date><xsl:value-of select="substring-before($UnpaidTO,',')"/></pi:Time_Off_Date> 
      <pi:Quantity><xsl:value-of select="substring-before(substring-after($UnpaidTO,','),' ')"/></pi:Quantity> 
      <pi:Unit_of_Time><xsl:value-of select="substring-after(substring-before($UnpaidTO,'='),' ')"/></pi:Unit_of_Time> 
     </pi:Time_Off> 
</xsl:template> 
</xsl:stylesheet> 

但問題是，我需要排除所有與工作人員類型相同SW並且僅對所有員工類型爲NSW的員工應用以上xslt代碼。我最終的代碼應該是什麼來實現我的預期結果？

<?xml version="1.0" encoding="UTF-8"?> 
<pi:Payroll_Extract_Employees xmlns:pi="urn:com.workday/picof"> 
    <pi:Employee> 
    <pi:Summary> 
     <pi:Employee_ID>00000001</pi:Employee_ID> 
    </pi:Summary> 
    <pi:Time_Off> 
     <pi:Code_Name>Unpaid Time Off</pi:Code_Name> 
     <pi:Time_Off_Type>9570</pi:Time_Off_Type> 
     <pi:Time_Off_Date>11-sept.-2017</pi:Time_Off_Date> 
     <pi:Quantity>2</pi:Quantity> 
     <pi:Unit_of_Time>Hours</pi:Unit_of_Time> 
    </pi:Time_Off> 
    </pi:Employee> 
</pi:Payroll_Extract_Employees> 

預先感謝您！

Answer 1

只是改變這一行...

<xsl:for-each select="//pi:Employee"> 

到

<xsl:for-each select="//pi:Employee[i:Additional_Information/pi:Worker_Type = 'NSW']"> 

或者，也許這...

<xsl:for-each select="//pi:Employee[not(i:Additional_Information/pi:Worker_Type = 'SW')]">