对数据岛数据实现动态排序二法
现在数据岛被越来越广泛的应用；其中必然会涉及到的就是动态排序了；下面列出两种实现方法：
1、为<xsl:param>标签设定参数实现动态排序（推荐）
<html>
<body>
<table DATASRC="#catalogs" border=1>
<thead>
<tr>
<td onclick="sort('TITLE','descending');">TITLE</td>
<td>ARTIST</td>
<td onclick="sort('COUNTRY','ascending');">COUNTRY</td>
<td>COMPANY</td>
<td>PRICE</td>
<td>YEAR</td>
</tr>
</thead>
<tbody>
<tr>
<td ><div DATAFLD="TITLE"></div></td>
<td ><div DATAFLD="ARTIST"></div></td>
<td ><div DATAFLD="COUNTRY"></div></td>
<td ><div DATAFLD="COMPANY"></div></td>
<td ><div DATAFLD="PRICE"></div></td>
<td ><div DATAFLD="YEAR"></div></td>
</tr>
</tbody>
</table>
<xml id="catalogs">
<CATALOG>
<CD>
<TITLE>Empire Burlesque</TITLE>
Bob Dylan
<COUNTRY>USA</COUNTRY>
<COMPANY>Columbia</COMPANY>
<PRICE>10.90</PRICE>
<YEAR>1985</YEAR>
</CD>
<CD>
<TITLE>Burlesque</TITLE>
Dylan
<COUNTRY>UA</COUNTRY>
<COMPANY>umbia</COMPANY>
<PRICE>1.90</PRICE>
<YEAR>1987</YEAR>
</CD>
<CD>
<TITLE>Empire</TITLE>
Bob
<COUNTRY>US</COUNTRY>
<COMPANY>bia</COMPANY>
<PRICE>12.90</PRICE>
<YEAR>1995</YEAR>
</CD>
</CATALOG>
</xml>
<xml id="xstyle">
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="xml"/>
<xsl:param name="sortorder" select="'descending'"/>
<xsl:param name="sortfield" select="'xxx'"/>
<xsl:template match="/">
<CATALOG>
<xsl:for-each select="CATALOG/CD">
<xsl:sort select="*[name()=$sortfield]" order="{$sortorder}" />
<CD>
<TITLE><xsl:value-of select="TITLE"/></TITLE>
<xsl:value-of select="ARTIST"/>
<COUNTRY><xsl:value-of select="COUNTRY"/></COUNTRY>
<COMPANY><xsl:value-of select="COMPANY"/></COMPANY>
<PRICE><xsl:value-of select="PRICE"/></PRICE>
<YEAR><xsl:value-of select="YEAR"/></YEAR>
</CD>
</xsl:for-each>
</CATALOG>
</xsl:template>
</xsl:stylesheet>
</xml>
<script language="vbscript">
function sort(strSortField, strSortOrder)
dim objXSL, objXML, objTemplate, objProcessor, strHTML, strDrinkType
Set objXML = CreateObject("Msxml2.FreeThreadedDOMDocument")
Set objXSL = CreateObject("Msxml2.FreeThreadedDOMDocument")
'Load the XML document
objXML.async = False
objXML.Loadxml catalogs.xml
'Load the XSL document
objXSL.async = False
objXSL.Loadxml xstyle.xml
'Create an instance of our XSL Template object
Set objTemplate = CreateObject("MSXML2.XSLTemplate")
'Create an instance of our stylesheet object using our recently loaded XSLT document
Set objTemplate.stylesheet = objXSL
'Create an instance of our Processor object
Set objProcessor = objTemplate.createProcessor
'Define the input object for our object equal to our recently loaded XML document
objProcessor.input = objXML
'Now, finally we can add any parameters that we require to our Template processor
objProcessor.AddParameter "sortfield", strSortField
objProcessor.AddParameter "sortorder", strSortOrder
'Last but not least we do our transformation
objProcessor.Transform
'Store the results of the output into a string.
strXML = objProcessor.output
'Load up an XML DOM object from the recent XML output
objXML.loadxml strXML
'Select only the "employees" elements from our document object
objXML.selectNodes("//CATALOG")
'Load our Data Island using our new XML object
catalogs.loadxml objXML.xml
end function
</script>
<script language="javascript">
function sort2(xmlObj, xslObj, sortByColName)
{
var xmlData=eval("document.all."+xmlObj).XMLDocument;
var xslData=eval("document.all."+xslObj).XMLDocument;
var nodes=xslData.documentElement.selectSingleNode("xsl:for-each");
nodes.selectSingleNode("@order-by").value=sortByColName;
xmlData.documentElement.transformNodeToObject(xslData.documentElement,xmlData);
}
</script>
</body>
</html>
2、直接通过DOM实现，灵活性欠缺：
<html>
<body>
<table DATASRC="#catalogs" border=1>
<thead>
<tr>
<td onclick="sort('catalogs','xstyle','TITLE');">TITLE</td>
<td>ARTIST</td>
<td>COUNTRY</td>
<td>COMPANY</td>
<td>PRICE</td>
<td>YEAR</td>
</tr>
</thead>
<tbody>
<tr>
<td ><div DATAFLD="TITLE"></div></td>
<td ><div DATAFLD="ARTIST"></div></td>
<td ><div DATAFLD="COUNTRY"></div></td>
<td ><div DATAFLD="COMPANY"></div></td>
<td ><div DATAFLD="PRICE"></div></td>
<td ><div DATAFLD="YEAR"></div></td>
</tr>
</tbody>
</table>
<xml id='catalogs'>
<CATALOG>
<CD>
<TITLE>Empire Burlesque</TITLE>
Bob Dylan
<COUNTRY>USA</COUNTRY>
<COMPANY>Columbia</COMPANY>
<PRICE>10.90</PRICE>
<YEAR>1985</YEAR>
</CD>
<CD>
<TITLE>Burlesque</TITLE>
Dylan
<COUNTRY>UA</COUNTRY>
<COMPANY>umbia</COMPANY>
<PRICE>1.90</PRICE>
<YEAR>1987</YEAR>
</CD>
<CD>
<TITLE>Empire</TITLE>
Bob
<COUNTRY>US</COUNTRY>
<COMPANY>bia</COMPANY>
<PRICE>12.90</PRICE>
<YEAR>1995</YEAR>
</CD>
</CATALOG>
</xml>
<xml id="xstyle">
<CATALOG>
<xsl:for-each select="CD" order-by="+TITLE" xmlns:xsl="http://www.w3.org/TR/WD-xsl">
<CD>
<TITLE><xsl:value-of select="TITLE"/></TITLE>
<xsl:value-of select="ARTIST"/>
<COUNTRY><xsl:value-of select="COUNTRY"/></COUNTRY>
<COMPANY><xsl:value-of select="COMPANY"/></COMPANY>
<PRICE><xsl:value-of select="PRICE"/></PRICE>
<YEAR><xsl:value-of select="YEAR"/></YEAR>
</CD>
</xsl:for-each>
</CATALOG>
</xml>
<script language="javascript">
function sort(xmlObj, xslObj, sortByColName)
{
var xmlData=eval("document.all."+xmlObj).XMLDocument;
var xslData=eval("document.all."+xslObj).XMLDocument;
var nodes=xslData.documentElement.selectSingleNode("xsl:for-each");
nodes.selectSingleNode("@order-by").value=sortByColName;
xmlData.documentElement.transformNodeToObject(xslData.documentElement,xmlData);
}
</script>
</body>
</html>