xml - XSLT - 根据条件修改元素兄弟的值

Question

<?xml version="1.0" encoding="UTF-8"?>
<schools>
<city>Marshall</city>
<state>Maryland</state>
<highschool>
<schoolname>Marshalls</schoolname>
<department id="1">
  <deptCode>D1</deptCode>
  <deptName>Chemistry</deptName>
  <deptHead>Henry Carl</deptHead>
</department>
<department id="2">
  <deptCode>D2</deptCode>
  <deptName>Science-Physics</deptName>
  <deptHead>Martin Sean</deptHead>
</department>
<department id="3">
  <deptCode>D3</deptCode>
  <deptName>Science-Botany</deptName>
  <deptHead>Susanne Charles</deptHead>
</department>
<department id="4">
  <deptCode>D4</deptCode>
  <deptName>Science-Chemistry</deptName>
  <deptHead>Henry Carl</deptHead>
</department>
<highschool>
<schools>

从上面的 xml 中，如果城市是 Marshal，学校名称是 Marshalls，则检查两个部门名称 Chemistry 和 Science-Chemistry 是否存在， 如果为真，则删除化学部门元素。如果 Science-Chemistry 不存在，则修改 Chemistry 部门的值 DeptCode为4，Dept Name为Science-Chemistry，Department attribute id为4。

下面是我正在使用的 XSLT。如果部门名称 Science Chemistry 存在，我需要在 remDept 模板下编写代码以删除部门。 如果Science Chemistry不存在，修改模板modifyDept中的Dept Code和Dept Name为D4。有人能帮我吗？提前致谢

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes" />
<xsl:strip-space elements="*" />

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

<xsl:template match="/schools[city='Marshall' and /highschools/schoolname='Marshalls']">
   <xsl:if test="contains(deptName='Science-Chemistry')">
      <xsl:choose>
         <xsl:when test="contains(deptName='Chemistry'">
            <xsl:call-template name="remDept">
         </xsl:when>
         <xsl:otherwise>
             <xsl:call-template name="modifyDept">
         </xsl:otherwise>
      </xsl:choose>
   </xsl:if>
</xsl:template>

<xsl:template name="remDept">
// TO DO
</xsl:template>

<xsl:template name="modifyDept">
// TO DO
</xsl:template>


</xsl:stylesheet>

Answer 1

From the above xml, if city is Marshal and school name is Marshalls, then check if both dept names Chemistry and Science-Chemistry exists, if true, remove the department element of Chemistry. If Science-Chemistry does not exist, then modify the Chemistry department values with DeptCode as 4 and Dept Name as Science-Chemistry and Department attribute id as 4.

也许我遗漏了什么，但在我看来这可以(相对)简单地通过以下方式完成:

XSLT 1.0

<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>

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

<xsl:template match="department[../../city='Marshall' and ../schoolname='Marshalls' and deptName='Chemistry']">
    <xsl:if test="not(../department[deptName='Science-Chemistry'])">
        <department id="4">
            <deptCode>D4</deptCode>
            <deptName>Science-Chemistry</deptName>
            <xsl:copy-of select="deptHead"/>
        </department>
    </xsl:if>
</xsl:template>

</xsl:stylesheet>