XSLT 使用元素上的过滤器动态合并两个 xml 文件

Question

我是xslt的新手，我有两个xml文件如下file1.xml：

<?xml version="1.0" encoding="UTF-8"?>
<people-data id="test-id" timestamp="20014-03-30T09:00:00">
   <person>
      <id>12345</id>
      <first-name>John</first-name>
   </person>

   <person>
      <id>67890</id>
      <first-name>Mike</first-name>
   </person>

   <person>
      <id>11111</id>
      <first-name>Dan</first-name>
   </person>
</people-data>

第二个xml文件如下file2.xml：

<?xml version='1.0' encoding='UTF-8'?>
<people-appointment-data>
    <person-data>        
        <id>12345</id>
        <first-name>John</first-name>       
        <appointments>
          <appointment>
            <code>5124</code>
            <pass>14920329324</pass>
            <states>
                <state>IL</state>
                <state>IN</state>
            </states>
         </appointment>

          <appointment>
            <code>1001</code>
            <pass>14921119324</pass>
            <states>
                <state>NV</state>
                <state>CA</state>
            </states>
         </appointment>
    </appointments>
</person-data>
<person-data>        
    <id>67890</id>
    <first-name>Mike</first-name>       
    <appointments>
        <appointment>
            <code>6666</code>
            <pass>14920</pass>
            <states>
                <state>AK</state>
                <state>MA</state>
            </states>
        </appointment>
    </appointments>
</person-data>
</people-appointment-data>

我试图使用 xslt 实现的是将约会信息复制到第一个 xml 文件中，过滤 id 标签上的匹配项。

如果 id 不匹配，这就是我期望的输出结果，file1.xml 中的信息将被保留：

<?xml version="1.0" encoding="UTF-8"?>
<people-data id="test-id" timestamp="20014-03-30T09:00:00">
   <person>
      <id>12345</id>
      <first-name>John</first-name>
      <appointments>
            <appointment>
                <code>5124</code>
                <pass>14920329324</pass>
                <states>
                    <state>IL</state>
                    <state>IN</state>
                </states>
            </appointment>

          <appointment>
            <code>1001</code>
            <pass>14921119324</pass>
            <states>
                <state>NV</state>
                <state>CA</state>
            </states>
         </appointment>
        </appointments>
   </person>

   <person>
      <id>67890</id>
      <first-name>Mike</first-name>
      <appointments>
            <appointment>
                <code>6666</code>
                <pass>14920</pass>
                <states>
                    <state>AK</state>
                    <state>MA</state>
                </states>
            </appointment>
        </appointments>
   </person>

   <person>
      <id>11111</id>
      <first-name>Dan</first-name>
   </person>
</people-data>

Answer 1

我建议你这样做：

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="*"/>

<xsl:param name="lookup-document" select="document('file2.xml')"/>
<xsl:key name="pdata" match="person-data" use="id" />

<xsl:template match="/">
    <people-data>
        <xsl:for-each select="people-data/person">
            <person>
                <xsl:variable name="id" select="id" />
                <xsl:copy-of select="*"/>
                <!--  switch context to lookup-document in order to use the key -->
                <xsl:for-each select="$lookup-document">
                    <xsl:copy-of select="key('pdata', $id)/appointments"/>
                </xsl:for-each> 
            </person>
        </xsl:for-each>
    </people-data>
</xsl:template>

</xsl:stylesheet>

Answer 2

document() 函数可让您匹配备用文档中的值。

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:template match="/">
    <xsl:apply-templates select="//person"/>
</xsl:template>
<xsl:template match="person">
    <xsl:copy>
        <xsl:apply-templates select="*" mode="copy"/>
        <xsl:variable name="id" select="id/text()"/>
        <xsl:apply-templates select="document('file2.xml')//person-data[id/text()=$id]/appointments" mode="copy"/>
    </xsl:copy>
</xsl:template>

<xsl:template match="*" mode="copy">
    <xsl:copy>
        <xsl:apply-templates select="*|text()" mode="copy"/>
    </xsl:copy>
</xsl:template>
</xsl:stylesheet>