001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/branches/2.2_testing/src/org/deegree/framework/xml/NamespaceContext.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2008 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/deegree/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 This library is free software; you can redistribute it and/or
012 modify it under the terms of the GNU Lesser General Public
013 License as published by the Free Software Foundation; either
014 version 2.1 of the License, or (at your option) any later version.
015
016 This library is distributed in the hope that it will be useful,
017 but WITHOUT ANY WARRANTY; without even the implied warranty of
018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019 Lesser General Public License for more details.
020
021 You should have received a copy of the GNU Lesser General Public
022 License along with this library; if not, write to the Free Software
023 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024
025 Contact:
026
027 Andreas Poth
028 lat/lon GmbH
029 Aennchenstraße 19
030 53177 Bonn
031 Germany
032 E-Mail: poth@lat-lon.de
033
034 Prof. Dr. Klaus Greve
035 Department of Geography
036 University of Bonn
037 Meckenheimer Allee 166
038 53115 Bonn
039 Germany
040 E-Mail: greve@giub.uni-bonn.de
041
042 ---------------------------------------------------------------------------*/
043 package org.deegree.framework.xml;
044
045 import java.net.URI;
046 import java.util.HashMap;
047 import java.util.Map;
048 import java.util.Set;
049
050 import org.deegree.ogcbase.CommonNamespaces;
051
052 /**
053 * Implementation of Jaxen's (http://jaxen.codehaus.org) <code>NamespaceContext</code> interface.
054 * <p>
055 * NOTE: This should be used everywhere inside deegree, don't use
056 * <code>org.jaxen.SimpleNamespaceContext</code> -- this prevents unnecessary binding to Jaxen.
057 *
058 * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider </a>
059 * @author last edited by: $Author: apoth $
060 *
061 * @version $Revision: 9339 $, $Date: 2007-12-27 13:31:52 +0100 (Do, 27 Dez 2007) $
062 */
063 public class NamespaceContext implements org.jaxen.NamespaceContext {
064
065 // keys: prefices (String), values: namespaces (URI)
066 private Map<String,URI> namespaceMap = new HashMap<String,URI>();
067
068 /**
069 * Creates a new instance of <code>NamespaceContext</code> with only the prefix 'xmlns:' being
070 * bound.
071 */
072 public NamespaceContext() {
073 this.namespaceMap.put( CommonNamespaces.XMLNS_PREFIX, CommonNamespaces.XMLNS );
074 }
075
076 /**
077 * Creates a new instance of <code>NamespaceContext</code> that contains all the bindings from the argument
078 * <code>NamespaceContext</code>.
079 *
080 * @param nsContext bindings to copy
081 */
082 public NamespaceContext( NamespaceContext nsContext ) {
083 this.namespaceMap = new HashMap<String,URI> (nsContext.namespaceMap);
084 }
085
086 public Map<String, URI> getNamespaceMap() {
087 return this.namespaceMap;
088 }
089
090 /**
091 * registers a new prefix with an assigned namespace URI
092 * @param prefix
093 * @param namespace
094 */
095 public void addNamespace( String prefix, URI namespace ) {
096 this.namespaceMap.put( prefix, namespace );
097 }
098
099 /**
100 * registeres all prexifes and assigned namespaces from another
101 * NamespaceContext. If a prefix already exists in this NamespaceContext
102 * it will be ignored.
103 * @param nsc
104 */
105 public void addAll( NamespaceContext nsc ) {
106 Map<String,URI> map = nsc.getNamespaceMap();
107 Set<String> keys = map.keySet();
108 for ( String key : keys ) {
109 if ( this.namespaceMap.get( key ) == null ) {
110 this.namespaceMap.put( key, map.get( key ) );
111 }
112 }
113 }
114
115 public String translateNamespacePrefixToUri( String prefix ) {
116 URI namespaceURI = this.namespaceMap.get( prefix );
117 return namespaceURI == null ? null : namespaceURI.toString();
118 }
119
120 public URI getURI( String prefix ) {
121 return this.namespaceMap.get( prefix );
122 }
123
124 public String toString() {
125 return namespaceMap.toString();
126 }
127 }