将XSLT Transform应用于已转换的XML

Question

所有,

我有一个XML文件,我使用XSLT文档将其转换为另一个XML.

我可以在同一个XSLT文件中定义另一组转换,以便在第一个转换的结果XML中应用吗？

谢谢,

MK

Answer 1

是.

I. This XSLT 1.0 transformation:

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:ext="http://exslt.org/common"
 xmlns:msxsl="urn:schemas-microsoft-com:xslt"
 >
 <xsl:output omit-xml-declaration="yes" indent="yes"/>
 <xsl:strip-space elements="*"/>

 <xsl:variable name="vrtfPass1">
  <xsl:apply-templates/>
 </xsl:variable>

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

 <xsl:template match="node()|@*" mode="pass2">
  <xsl:copy>
   <xsl:apply-templates select="node()|@*" mode="pass2"/>
  </xsl:copy>
 </xsl:template>

 <xsl:template match="num/text()">
  <xsl:value-of select="2*."/>
 </xsl:template>

 <xsl:template match="num/text()" mode="pass2">
  <xsl:value-of select="1+."/>
 </xsl:template>

 <xsl:template match="/">
  <xsl:apply-templates select="ext:node-set($vrtfPass1)/*" mode="pass2"/>
 </xsl:template>
</xsl:stylesheet>

when applied on this XML document:

<t>
 <num>1</num>
 <num>2</num>
 <num>3</num>
 <num>4</num>
 <num>5</num>
</t>

produces:

<t>
    <num>3</num>
    <num>5</num>
    <num>7</num>
    <num>9</num>
    <num>11</num>
</t>

Do note:

1. Two transformations are actually performed, the second is performed on the result of the first.

2. The result of the first transformation is the content of the variable $vrtfPass1.

3. In XSLT 1.0 the type of variables that contain dynamically generated (temporary) XML trees (XML document or XML fragment) is RTF (Result-Tree-Fragment). No XPath operations are possible on an RTF -- it needs to be converted to a regular node-set using the extension function xxx:node-set(), which is provided by the vast majority of XSLT 1.0 processor vendors. In this example exslt:node-set() is used, because EXSLT is implemented by many different vendors.

4. The second transformation is applied on the result of the first: <xsl:apply-templates select="ext:node-set($vrtfPass1)/*" mode="pass2"/> . A separate mode is used in order to cleanly separate the code of the two transformations.

5. The first transformation multiplies each num/text() by 2. The second transformation increments each num/text(). The result is 2*.+1

II.这个XSLT 2.0转换:

<xsl:stylesheet version="2.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:xs="http://www.w3.org/2001/XMLSchema" >
 <xsl:output omit-xml-declaration="yes" indent="yes"/>
 <xsl:strip-space elements="*"/>

 <xsl:variable name="vPass1">
  <xsl:apply-templates mode="pass1"/>
 </xsl:variable>

 <xsl:template match="node()|@*" mode="pass1">
  <xsl:copy>
   <xsl:apply-templates select="node()|@*" mode="pass1"/>
  </xsl:copy>
 </xsl:template>

 <xsl:template match="node()|@*" mode="pass2">
  <xsl:copy>
   <xsl:apply-templates select="node()|@*" mode="pass2"/>
  </xsl:copy>
 </xsl:template>

 <xsl:template match="num/text()" mode="pass1">
  <xsl:value-of select="2*xs:integer(.)"/>
 </xsl:template>

 <xsl:template match="num/text()" mode="pass2">
  <xsl:value-of select="1+."/>
 </xsl:template>

 <xsl:template match="/">
  <xsl:apply-templates select="$vPass1"  mode="pass2"/>
 </xsl:template>
</xsl:stylesheet>

当应用于同一XML文档时,产生相同的想要和正确的结果.

请注意:在XSLT 2.0/XPath 2.0中,RTF类型已被废除.不需要xxx:node-set()扩展功能.