Parsing, Creating, and Transforming XML Documents - Beginning Java 7 - page 1003

Listing 10-23 presents a minimal implementation of the NamespaceContext inter-
face.

Listing 10-23. Minimally implementing NamespaceContext

import java.util.Iterator;

import javax.xml.XMLConstants;

import javax.xml.namespace.NamespaceContext;

class NSContext implements NamespaceContext
{

@Override
public String getNamespaceURI(String prefix)
{

if (prefix == null)
throw

new IllegalArgumentException("prefix is

null");
else
if (prefix.equals("tt"))
return "http://www.tutortutor.ca/";
else
return null;

}
@Override
public String getPrefix(String uri)
{

return null;

}
@Override
public Iterator getPrefixes(String uri)
{

return null;

}

}