Question

Is there a simple way to have an extension function in XSLT 1.0 written in javascript return a node-set?
I could create a new java class for this, but I would rather just put some code in the script itself.
When this can be done in another scripting language supported by all or most XSLT processors (VB script? Groovy? C#?), then that s OK too of course.

我有以下简单的文字:

<msxsl:script language="JScript" implements-prefix="custom">
    function xml (input) {
        var x = input.split(";");
        return x.toString();
    }
</msxsl:script>

which returns a string, and hence no problem calling the function in Xpath expressions.
What I would like to have, is a node-set result. But when I change my script to

<msxsl:script language="JScript" implements-prefix="custom">
    function xml (input) {
        var x = input.split(";");
        return x;
    }
</msxsl:script>

然后,称职造成错误,因为阵列不会自动转换为 no。

见arrays-with-java-xslt-extensions。但是,这更符合为此设立一个新类别的规定,我现在要避免。

因此,在文字中应加上哪些声明,以便把阵列变成一个节点,使功能在Xpath表述中使用?

Answer 1

Here is an example that should work with MSXML 6 as long as run in a mode allowing script in XSLT to implement extension functions. The stylesheet code is as follows:

<xsl:stylesheet
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  version="1.0"
  xmlns:ms="urn:schemas-microsoft-com:xslt"
  xmlns:my="http://example.com/my"
  exclude-result-prefixes="ms my">

  <xsl:output method="html" version="5.0"/>

  <ms:script language="JScript" implements-prefix="my">
  <![CDATA[
  function tokenize (input) {
    var doc = new ActiveXObject( Msxml2.DOMDocument.6.0 );
    var fragment = doc.createDocumentFragment();
    var tokens = input.split( ; );
    for (var i = 0, l = tokens.length; i < l; i++)
    {
      var item = doc.createElement( item );
      item.text = tokens[i];
      fragment.appendChild(item);
    }
    return fragment.selectNodes( item );
  }
  ]]>
  </ms:script>

  <xsl:template match="/">
    <html>
      <head>
        <title>Example</title>
      </head>
      <body>
        <h1>Example</h1>
        <ul>
          <xsl:apply-templates select="my:tokenize( Kibology;for;all )"/>
        </ul>
      </body>
    </html>
   </xsl:template>

   <xsl:template match="item">
     <li>
       <xsl:value-of select="."/>
     </li>
   </xsl:template>

</xsl:stylesheet>

Answer 2

If you want nodes returned, you ll have to create the nodes yourself, using DOM interfaces. I suspect (from memory) that if you return a DOM NodeList from your javascript function it will be treated by the calling XPath code as an XPath nodeset - though you ll have to check the spec carefully for details about how duplicate nodes and document order are handled.

任何关于SLT java或javascript分机延伸的问题都需要说,你所说的产品是什么,因为这里没有标准。

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