package de.intevation.artifacts;

import javax.xml.XMLConstants;

import javax.xml.namespace.NamespaceContext;

import java.util.Iterator;

/**
 * @author Sascha L. Teichmann (sascha.teichmann@intevation)
 */
public class ArtifactNamespaceContext
implements   NamespaceContext
{
    /**
     * The URI of the namespace of the artifacts.
     */
    public final static String NAMESPACE_URI = "http://www.intevation.de/2009/artifacts";

    /**
     * The XML prefix for the artifacts namespace.
     */
    public final static String NAMESPACE_PREFIX = "art";

    public static final ArtifactNamespaceContext INSTANCE =
        new ArtifactNamespaceContext();

    public ArtifactNamespaceContext() {
    }

    public String getNamespaceURI(String prefix) {

        if (prefix == null) {
            throw new NullPointerException("Null prefix");
        }

        if (NAMESPACE_PREFIX.equals(prefix)) {
            return NAMESPACE_URI;
        }

        if ("xml".equals(prefix)) {
            return XMLConstants.XML_NS_URI;
        }

        return XMLConstants.NULL_NS_URI;
    }

    public String getPrefix(String uri) {
        throw new UnsupportedOperationException();
    }

    public Iterator getPrefixes(String uri) {
        throw new UnsupportedOperationException();
    }
}
// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: