I met some thing strange when I am trying to extend Xalan with Javascript. And I am asking why?
And the code is below
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<?xml version="1.0" encoding="GB2312"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; version="1.0"
xmlns:lxslt="http://xml.apache.org/xslt"; xmlns:my-ext="ext1"
extension-element-prefixes="my-ext"><xsl:output encoding="GB2312"/>
<lxslt:component prefix="my-ext" elements="out" functions="displaySex">
<lxslt:script lang="javascript"> function out(xslProcessorContext, elem){
var o = elem.getChildNodes();
var oTransformer = xslProcessorContext.getTransformer(); try{
for(var i = 0 ; i < o.getLength() ; i ++ ){
o.item(i).execute( oTransformer ); } }catch( e ){ return e; }
return ",������"; }
function displaySex( sex ){
var sexStr = new String(sex.item(0).getNodeValue());
if( "m" == sexStr ) return "����"; else if( "f" ==sexStr ) return "Ůʿ";
else return new String(sex.item(0).getNodeValue()); } </lxslt:script>
</lxslt:component>
<xsl:template match="person">
<result>
<my-ext:out>
<xsl:value-of select="."/>
<xsl:value-of select="my-ext:displaySex(@sex) "/>���</my-ext:out>
</result>
</xsl:template>
</xsl:stylesheet>
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I called function displaySex in this way, <xsl:value-of select="my-ext:displaySex(@sex) "/>, and I think the argument @sex should be a string. However it turn out to be a DTM object equivelant to NodeList. I am not sure why. And whem I implement the same funtion in Java, the argument called in the same way is a String. And the java code is below.
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package a;import org.apache.xalan.extensions.XSLProcessorContext;
import org.apache.xalan.templates.ElemExtensionCall;
import org.apache.xalan.templates.ElemTemplateElement;public class A{
public String out( XSLProcessorContext xslProcContext , ElemExtensionCall elmExtCall){
org.apache.xalan.transformer.TransformerImpl oTrsfImpl =
xslProcContext.getTransformer();
org.w3c.dom.NodeList oList = elmExtCall.getChildNodes(); try{
for( int i = 0 ; i < oList.getLength() ; i ++ ){
((ElemTemplateElement)oList.item(i)).execute(oTrsfImpl); }
}catch(Exception e){ e.printStackTrace(); } return ",������"; }
public String displaySex( String strSex){
if( strSex.equals("m") ) return "����";
else if( strSex.equals("f") ) return "Ůʿ"; else return strSex; } }
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And the xsl document that call the java code below
******************************************************************
<?xml version="1.0" encoding="GB2312"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; version="1.0"
xmlns:lxslt="http://xml.apache.org/xslt"; xmlns:my-ext="ext1"
extension-element-prefixes="my-ext"><xsl:output encoding="GB2312"/>
<lxslt:component prefix="my-ext" elements="out" functions="displaySex">
<lxslt:script lang="javaclass" src="xalan://a.A"> </lxslt:script>
</lxslt:component><xsl:template match="person">
<results><my-ext:out><xsl:value-of select="."/><xsl:value-of select="my-ext:displaySex(@sex)"/>���</my-ext:out></results>
</xsl:template></xsl:stylesheet>
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And my question is why there are such difference between Javascript and Java?
Cyfer(Zhang, Xin)
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