如何使XSLT Javascript扩展函数返回节点集? [英] How can make an XSLT Javascript extension function return a node-set?
问题描述
在用javascript编写的XSLT 1.0中是否有一种简单的方法来具有扩展功能，以返回节点集?
我可以为此创建一个新的Java类，但我只想在脚本本身中放入一些代码即可.
如果可以使用所有或大多数XSLT处理器支持的另一种脚本语言(VB脚本，Groovy，C#?)来完成此操作，那当然也可以.
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.
我有以下简单的脚本:
<msxsl:script language="JScript" implements-prefix="custom">
function xml (input) {
var x = input.split(";");
return x.toString();
}
</msxsl:script>
返回一个字符串，因此在Xpath表达式中调用该函数没有问题.
我想拥有的是节点集结果.但是当我将脚本更改为
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>
然后调用该函数会产生错误，因为该数组不会自动转换为节点集.
then calling the function gives an error because the array is not automatically converted to a node-set.
我查看了 arrays-with-java-xslt-extensions ，但更多为此，我希望避免这种情况.
I looked at arrays-with-java-xslt-extensions but that's more in the line of creating a new class for this, which I wish to avoid for now.
那么应该将哪些语句添加到脚本中才能将数组转换为节点集，从而允许在Xpath表达式中使用函数调用?
So which statements should be added to the script in order to transform the array into a node-set, allowing the function call to be used in Xpath expressions?
推荐答案
此处是一个示例，只要在允许XSLT中的脚本实现扩展功能的模式下运行，该示例就应与MSXML 6一起使用.样式表代码如下:
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>
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