How to create a namespace alias in dom level 2?

[Stefan Hoermann]

Dear subscribers,
I've got the following problem:
I want to generate a dom tree using the xerces dom implementation from 
scratch. The document I want to create should be valid to two XML 
Schemes. Therefore I want to create a namespace definition and a 
namespace alias in the root element. The document should then look like 
the following sample (please regard especially the namespace alias adlcp):

<?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns="http://www.imsproject.org/xsd/imscp_rootv1p1p2";
          xmlns:adlcp="http://www.adlnet.org/xsd/adlcp_rootv1p2";
          xmlns:xsi="http://www.imsproject.org/xsd/imscp_rootv1p1p2";
xsi:schemaLocation="http://www.imsproject.org/xsd/imscp_rootv1p1p2 
imscp_rootv1p1p2.xsd
                     http://www.imsglobal.org/xsd/imsmd_rootv1p2p1 
imsmd_rootv1p2p1.xsd
                     http://www.adlnet.org/xsd/adlcp_rootv1p2 
adlcp_rootv1p2.xsd">
    <organizations/>
    <resources>
        <resource adlcp:scormtype="asset">
            <metadata>
                <adlcp:location/>
            <metadata/>
        </resource>
        <resource adlcp:scormtype="asset">
            <metadata>
                <adlcp:location/>
            <metadata/>
        </resource>
    </resources>
</manifest>

To generate a document like this I modified the DOMGenerate.java as follows:
public class DOMGenerate {
    public static void main( String[] argv ) {
        try {
            Document doc=new DocumentImpl((org.w3c.dom.DocumentType) null);
            Element 
root=doc.createElementNS("http://www.imsproject.org/xsd/imscp_rootv1p1p2";, 
"manifest");
            Attr 
attr=doc.createAttributeNS("http://www.imsproject.org/xsd/imscp_rootv1p1p2";, 
"xsi:schemaLocation");
	    attr.setValue("http://www.imsproject.org/xsd/imscp_rootv1p1p2 
imscp_rootv1p1p2.xsd http://www.imsglobal.org/xsd/imsmd_rootv1p2p1 
imsmd_rootv1p2p1.xsd http://www.adlnet.org/xsd/adlcp_rootv1p2 
adlcp_rootv1p2.xsd");
            root.setAttributeNode(attr);

            doc.appendChild(root);
	    Element 
organizations=doc.createElementNS("http://www.imsproject.org/xsd/imscp_rootv1p1p2";, 
"organizations");
	    root.appendChild(organizations);

	    Element 
resources=doc.createElementNS("http://www.imsproject.org/xsd/imscp_rootv1p1p2";, 
"resources");
	    root.appendChild(resources);

	    Element 
resource=doc.createElementNS("http://www.imsproject.org/xsd/imscp_rootv1p1p2";, 
"resource");
	 
attr=doc.createAttributeNS("http://www.adlnet.org/xsd/adlcp_rootv1p2";, 
"adlcp:scormtype");
 	    attr.setValue("asset");
	    resource.setAttributeNode(attr);
	    resources.appendChild(resource);

	    Element 
metadata=doc.createElementNS("http://www.imsproject.org/xsd/imscp_rootv1p1p2";, 
"metadata");
	    resource.appendChild(metadata);

	    Element 
location=doc.createElementNS("http://www.adlnet.org/xsd/adlcp_rootv1p2";, 
"adlcp:location");
	    metadata.appendChild(location);

	 
resource=doc.createElementNS("http://www.imsproject.org/xsd/imscp_rootv1p1p2";, 
"resource");
	 
attr=doc.createAttributeNS("http://www.adlnet.org/xsd/adlcp_rootv1p2";, 
"adlcp:scormtype");
 	    attr.setValue("asset");
	    resource.setAttributeNode(attr);
	    resources.appendChild(resource);

	 
metadata=doc.createElementNS("http://www.imsproject.org/xsd/imscp_rootv1p1p2";, 
"metadata");
	    resource.appendChild(metadata);

	 
location=doc.createElementNS("http://www.adlnet.org/xsd/adlcp_rootv1p2";, 
"adlcp:location");
	    metadata.appendChild(location);

        ((DocumentImpl)doc).normalizeDocument();
            OutputFormat    format  = new OutputFormat( doc ); 
//Serialize DOM
	    format.setIndenting(true);
	    format.setIndent(4);

            StringWriter  stringOut = new StringWriter(); 
//Writer will be a String
            XMLSerializer    serial = new XMLSerializer( stringOut, 
format );
            serial.asDOMSerializer();                            // As 
a DOM Serializer

            serial.serialize( doc.getDocumentElement() );
            System.out.println( "\n\n" );
            System.out.println( stringOut.toString() ); //Spit out DOM 
as a String
        } catch ( Exception ex ) {
            ex.printStackTrace();
        }
    }
}

But this program returns a different XML file (please regard especially 
the namespace alias adlcp):

<?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns="http://www.imsproject.org/xsd/imscp_rootv1p1p2";
    xmlns:xsi="http://www.imsproject.org/xsd/imscp_rootv1p1p2"; 
xsi:schemaLocation="http://www.imsproject.org/xsd/imscp_rootv1p1p2 
imscp_rootv1p1p2.xsd http://www.imsglobal.org/xsd/imsmd_rootv1p2p1 
imsmd_rootv1p2p1.xsd http://www.adlnet.org/xsd/adlcp_rootv1p2 
adlcp_rootv1p2.xsd">
    <organizations/>
    <resources>
        <resource adlcp:scormtype="asset" 
xmlns:adlcp="http://www.adlnet.org/xsd/adlcp_rootv1p2";>
            <metadata>
                <adlcp:location/>
            </metadata>
        </resource>
        <resource NS1:scormtype="asset" 
xmlns:NS1="http://www.adlnet.org/xsd/adlcp_rootv1p2";>
            <metadata>
                <adlcp:location 
xmlns:adlcp="http://www.adlnet.org/xsd/adlcp_rootv1p2"/>
            </metadata>
        </resource>
    </resources>
</manifest>

My questions:
How do I have to change the program to generate a document like the 
sample above?
-> How do I create the namespace alias "adlcp" in the root element?

Does anyone have suggestions?
Many thanks,
Stefan

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