RE: Saxon setParameter() of node-set problems

Get the document element using Document.getDocumentElement and then use this
Element to create your XNodeSet, after which you can set the parameter. I am
using this in XalanJ2.0 and it works fine for me.

-Vasu

> -----Original Message-----
> From: Shakeel Mahate [mailto:shakeelmahate@xxxxxxxxxxx]
> Sent: Friday, March 23, 2001 7:50 AM
> To: XSL-List@xxxxxxxxxxxxxxxxxxxxxx
> Cc: Sihyung Park; Brian Graves; Yasir Rizwan; Syed Naqi; Sutanu Ghosh;
> Shakeel Mahate; Mohsin Khalil; Afzal Khalfay; 
> shakeelmahate@xxxxxxxxxxx
> Subject:  Saxon setParameter() of node-set problems
> 
> 
> I want to send a NodeSet to a Saxon transformer via the setParameter()
> function.
> 
> I have a org.w3c.dom.Document object in memory which I need 
> to send to the
> transformer before calling transform.
> 
> So, here's the problem, I have not been able to figure out 
> how to transform
> org.jdom.Document into a node set as required by Saxon transformer.
> 
> I know how to output an org.w3c.dom.Document from a org.jdom.Document
> 
> For Xalan, I have tried the following:
> 
> XNodeSet nodeSet = new XNodeSet(dom);
> transformer.setParameter("referenceXml", nodeSet);
> 
> but the xalan:evaluate or any XPath expr on the the parameter 
> referenceXml
> do not work.
> 
> I know the problem isnt with my XPath expressions because if 
> I set the value
> of the parameter, via
> <xsl:parameter name="referenceXml">
>   <xsl:value-of select="document('ref.xml')"/>
> </xsl:parameter>
> then all of my XPath expressions and xalan:evaluate(....) 
> work correctly
> 
> But now when I send the parameter value as shown above, none 
> of the XPath
> expressions evaluate.
> 
> I want to give up on Xalan and try Saxon 6.2.2, but I dont know how to
> convert the org.w3c.dom.Document into a node-set expression 
> or DocumentInfo
> as expected by
> Saxon.
> 
> I have tried the following
> 
> Builder treeBuilder = new TreeBuilder();
> DOMDriver driver = new DOMDriver();
> driver.setContentHandler(treeBuilder); // This line does not 
> compile, since
> treeBuilder is not a ContentHandler and I have not been able 
> to find an
> appropriate ContentHandler
> 
> Next I tried the following
> InputSource is = new InputSource("dummy");
> DOMDriver driver = new DOMDriver();
> driver.setStartNode(dom);
> is.setSystemId("dummy");
> driver.setSystemId("dummy");
> SAXSource saxSource = new SAXSource(driver, is);
> Builder treeBuilder = new TreeBuilder()
> DocumentInfo rootNode = treeBuilder.build(saxSource);
> .... code deleted...
> transformer.setParameter("referenceXML", rootNode);
> ......
> transformer.transform(streamSource, streamResult);
> 
> I get a NullPointerException
> at com.icl.saxon.ContentEmitter.getNameCode(ContentEmitter.java:128)
> at com.icl.saxon.ContentEmitter.startElement(ContentEmitter.java:118)
> at com.icl.saxon.DOMDriver.walkNode(DOMDriver.java:275)
> at com.icl.saxon.DOMDriver.parse(DOMDriver.java:191)
> at com.icl.saxon.DOMDriver.parse(DOMDriver.java:162)
> at com.icl.saxon.Builder.build(Builder.java:263)
> at test.TestXPath.main(TestXPath.java:103)
> 
> Mike, please help me.
> 
> -Shakeel
> 
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> 

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