/**

  * Free Telco Dictionary

  * Copyright © 2013 František Kučera (frantovo.cz)

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License, or

  * (at your option) any later version.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. If not, see <http://www.gnu.org/licenses/>.

  */

 package cz.frantovo.telco.dictionary;

 import static cz.frantovo.telco.dictionary.Functions.*;

 import java.util.Iterator;

 import java.util.Map;

 import java.util.Map.Entry;

 import javax.xml.namespace.NamespaceContext;

 /**

  *

  * @author Ing. František Kučera (frantovo.cz)

  */

 public class MappedNamespaceContext implements NamespaceContext {

 	/**

 	 * maps prexix to namespace URI

 	 */

 	private Map<String, String> prefixMap;

 	public MappedNamespaceContext(Map<String, String> prefixMap) {

 		this.prefixMap = prefixMap;

 	}

 	@Override

 	public String getNamespaceURI(String prefix) {

 		return prefixMap.get(prefix);

 	}

 	@Override

 	public String getPrefix(String xmlns) {

 		for (Entry<String, String> e : prefixMap.entrySet()) {

 			if (equalz(xmlns, e.getValue())) {

 				return e.getKey();

 			}

 		}

 		return null;

 	}

 	/**

 	 * TODO: support multiple prefixes

 	 */

 	@Override

 	public Iterator getPrefixes(String xmlns) {

 		return new OneItemIterator(getPrefix(xmlns));

 	}

 }