ingo@100: /*
ingo@100:  * Copyright (c) 2010 by Intevation GmbH
ingo@100:  *
ingo@100:  * This program is free software under the LGPL (>=v2.1)
ingo@100:  * Read the file LGPL.txt coming with the software for details
ingo@100:  * or visit http://www.gnu.org/licenses/ if it does not exist.
ingo@100:  */
ingo@100: 
sascha@24: package de.intevation.artifacts;
sascha@24: 
sascha@93: import java.util.Iterator;
sascha@93: 
sascha@24: import javax.xml.XMLConstants;
sascha@24: 
sascha@24: import javax.xml.namespace.NamespaceContext;
sascha@24: 
sascha@24: /**
sascha@78:  * The namespace used in artifact documents.
sascha@77:  * @author <a href="mailto:sascha.teichmann@intevation">Sascha L. Teichmann</a>
sascha@24:  */
sascha@24: public class ArtifactNamespaceContext
sascha@24: implements   NamespaceContext
sascha@24: {
sascha@24:     /**
sascha@24:      * The URI of the namespace of the artifacts.
sascha@24:      */
sascha@94:     public final static String NAMESPACE_URI =
sascha@94:         "http://www.intevation.de/2009/artifacts";
sascha@47: 
sascha@24:     /**
sascha@24:      * The XML prefix for the artifacts namespace.
sascha@24:      */
sascha@24:     public final static String NAMESPACE_PREFIX = "art";
sascha@24: 
sascha@78:     /**
sascha@78:      * Final instance to be easily used to avoid creation
sascha@78:      * of instances.
sascha@78:      */
sascha@26:     public static final ArtifactNamespaceContext INSTANCE =
sascha@26:         new ArtifactNamespaceContext();
sascha@26: 
sascha@78:     /**
sascha@78:      * The default constructor.
sascha@78:      */
sascha@24:     public ArtifactNamespaceContext() {
sascha@24:     }
sascha@24: 
sascha@78:     /**
sascha@78:      * @see javax.xml.namespace.NamespaceContext#getNamespaceURI(String)
sascha@78:      * @param prefix The prefix
sascha@78:      * @return The corresponing URI
sascha@78:      */
sascha@24:     public String getNamespaceURI(String prefix) {
sascha@24: 
sascha@24:         if (prefix == null) {
sascha@24:             throw new NullPointerException("Null prefix");
sascha@24:         }
sascha@24: 
sascha@24:         if (NAMESPACE_PREFIX.equals(prefix)) {
sascha@24:             return NAMESPACE_URI;
sascha@24:         }
sascha@24: 
sascha@24:         if ("xml".equals(prefix)) {
sascha@24:             return XMLConstants.XML_NS_URI;
sascha@24:         }
sascha@24: 
sascha@24:         return XMLConstants.NULL_NS_URI;
sascha@24:     }
sascha@24: 
sascha@78:     /**
sascha@78:      * @see javax.xml.namespace.NamespaceContext#getPrefix(String)
sascha@78:      * @param uri The URI
sascha@78:      * @return nothing.
sascha@78:      * @throws java.lang.UnsupportedOperationException
sascha@78:      */
sascha@24:     public String getPrefix(String uri) {
sascha@24:         throw new UnsupportedOperationException();
sascha@24:     }
sascha@24: 
sascha@78:     /**
sascha@78:      * @see javax.xml.namespace.NamespaceContext#getPrefixes(java.lang.String)
sascha@78:      * @param uri The URI
sascha@78:      * @return nothing
sascha@78:      * @throws java.lang.UnsupportedOperationException
sascha@78:      */
sascha@24:     public Iterator getPrefixes(String uri) {
sascha@24:         throw new UnsupportedOperationException();
sascha@24:     }
sascha@24: }
sascha@78: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :