RE: [xsl] Generating XML fragment to DOM node using XSL

["Josh Canfield" <josh.canfield@xxxxxxxxxxxx>]

I believe this does what you want, I've included the java source, the xml and xsl files... I used xalan-j_2.5.1. I found that passing an Element to the DOMResult constructor caused an error during the transform when there wasn't a single document node, using a DocumentFragment worked. This seems like a bug in xalan...

Hope this helps,
Josh

### test.java

import java.io.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import javax.xml.transform.dom.*;

import org.w3c.dom.*;
import org.apache.xerces.dom.DocumentImpl;
import org.apache.xml.serializer.*;

public class test {
	static public void main(String[] args) {
		try {
			// Create xsl source
			StreamSource xslSource = new StreamSource(new File(args[0]));
			// Create xml source
			StreamSource xmlSource = new StreamSource(new File(args[1]));

			// Create transformer
			TransformerFactory tFactory = TransformerFactory.newInstance();
			/// output the xslt
			Transformer transformer = tFactory.newTransformer(xslSource);

			// Create document
			// <ui><listbox><model/></listbox></ui>
			Document doc = new DocumentImpl();
			Element ui = doc.createElement("ui");
			Element listbox = doc.createElement("listbox");
			Element model = doc.createElement("model");
			doc.appendChild(ui);
			ui.appendChild(listbox);
			listbox.appendChild(model);

			// Fragment to hold transformation
			DocumentFragment frag = doc.createDocumentFragment();

			DOMResult dr = new DOMResult(frag);
			transformer.transform(xmlSource, dr);

			// append transformed frag into model element
			model.appendChild(frag);
			
			// Dump to System.out
			Transformer identity = tFactory.newTransformer();
			identity.setOutputProperty("indent","yes");
			identity.setOutputProperty("{http://xml.apache.org/xslt}indent-amount","4";);
			identity.transform(new DOMSource(doc), new StreamResult(System.out));

		} catch ( Exception e ) {
			e.printStackTrace();
		}
	}
}

### xml.xml

<?xml version="1.0" encoding="UTF-8"?>

<addrList>
	<address>
		<name>One</name>
		<name>Two</name>
		<name>Three</name>
		<name>Four</name>
	</address>
</addrList>

### xsl.xsl

<?xml version="1.0"?>

<xsl:stylesheet 
	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; 
	version="1.0">
<xsl:output method="xml" indent="no"/>
  <xsl:template match="/">
		<xsl:copy-of select="addrList/address/name"/>
	</xsl:template>
</xsl:stylesheet>

### System.out: 

<ui>
    <listbox>
        <model>
            <name>One</name>
            <name>Two</name>
            <name>Three</name>
            <name>Four</name>
        </model>
    </listbox>
</ui>


-----Original Message-----
From: Steve Dussinger [mailto:sdussing@xxxxxxxxx]
Sent: Tuesday, December 16, 2003 1:10 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] Generating XML fragment to DOM node using XSL


On 12/16/03 12:49 PM, "cknell@xxxxxxxxxx" <cknell@xxxxxxxxxx> wrote:

> Here are two XML documents and an XSLT stylesheet
> 
> sduss_a.xml
> -------------
> <?xml version="1.0" encoding="UTF-8" ?>
> <menu>
> <breakfast />
> <lunch />
> </menu>
> 
> 
> sduss_b.xml
> -------------
> <?xml version="1.0" encoding="UTF-8" ?>
> <dinner>
> <salad />
> <soup />
> <main-dish />
> <dessert />
> </dinner>
> 
> sduss.xsl
> -------------
> <?xml version="1.0" encoding="UTF-8" ?>
> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
> <xsl:output method="xml" indent="yes" encoding="UTF-8" />
> <xsl:variable name="dinner" select="document('sduss_b.xml')" />
> 
> <xsl:template match="/menu">
>   <menu>
>     <xsl:copy-of select="*" />
>     <xsl:copy-of select="$dinner/*" />
>   </menu>
> </xsl:template>
> 
> </xsl:stylesheet>
> 
> Now apply suss.xsl to sduss_a.xml and you will get:
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <menu>
> <breakfast />
> <lunch />
> <dinner>
> <salad />
> <soup />
> <main-dish />
> <dessert />
> </dinner>
> </menu>
> 
> There it is, processed with XALAN-J. I'm still new to Java, so I won't be able
> to help you debug your program, but the problem is clearly not XSL and you may
> do better posting to the XALAN-J list to get pointers programming those
> classes.

Unfortunately, this isn't doing what I need to do. This XSL creates a
completely new DOM document with a 'menu' root. I need to put a series of
nodes into an existing document at a specific node beneath the root.

I want the root node to be any currently existing element in my DOM tree. I
can control the choice of which node is my parent in the destination tree,
but if I try to put more than one node under that parent element, I get this
error, even though I don't think the error is correct.

I understand that I can't create a DOM document with more than one root
element, but that's not what I'm trying. I already have the DOM document,
and I want to put a series of nodes under a child element of that DOM
document...

Thanx,
   Steve



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