001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/framework/xml/NamespaceContext.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036 package org.deegree.framework.xml;
037
038 import java.net.URI;
039 import java.util.HashMap;
040 import java.util.Map;
041 import java.util.Set;
042
043 import org.deegree.ogcbase.CommonNamespaces;
044
045 /**
046 * Implementation of Jaxen's (http://jaxen.codehaus.org) <code>NamespaceContext</code> interface.
047 * <p>
048 * NOTE: This should be used everywhere inside deegree, don't use
049 * <code>org.jaxen.SimpleNamespaceContext</code> -- this prevents unnecessary binding to Jaxen.
050 *
051 * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider </a>
052 * @author last edited by: $Author: mschneider $
053 *
054 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
055 */
056 public class NamespaceContext implements org.jaxen.NamespaceContext {
057
058 // keys: prefices (String), values: namespaces (URI)
059 private Map<String, URI> namespaceMap = new HashMap<String, URI>();
060
061 /**
062 * Creates a new instance of <code>NamespaceContext</code> with only the prefix 'xmlns:' being
063 * bound.
064 */
065 public NamespaceContext() {
066 this.namespaceMap.put( CommonNamespaces.XMLNS_PREFIX, CommonNamespaces.XMLNS );
067 }
068
069 /**
070 * Creates a new instance of <code>NamespaceContext</code> that contains all the bindings from
071 * the argument <code>NamespaceContext</code>.
072 *
073 * @param nsContext
074 * bindings to copy
075 */
076 public NamespaceContext( NamespaceContext nsContext ) {
077 this.namespaceMap = new HashMap<String, URI>( nsContext.namespaceMap );
078 }
079
080 /**
081 * @return the namespace map of the context.
082 */
083 public Map<String, URI> getNamespaceMap() {
084 return this.namespaceMap;
085 }
086
087 /**
088 * registers a new prefix with an assigned namespace URI
089 *
090 * @param prefix
091 * @param namespace
092 */
093 public void addNamespace( String prefix, URI namespace ) {
094 this.namespaceMap.put( prefix, namespace );
095 }
096
097 /**
098 * registeres all prexifes and assigned namespaces from another NamespaceContext. If a prefix
099 * already exists in this NamespaceContext it will be ignored.
100 *
101 * @param nsc
102 */
103 public void addAll( NamespaceContext nsc ) {
104 Map<String, URI> map = nsc.getNamespaceMap();
105 Set<String> keys = map.keySet();
106 for ( String key : keys ) {
107 if ( this.namespaceMap.get( key ) == null ) {
108 this.namespaceMap.put( key, map.get( key ) );
109 }
110 }
111 }
112
113 public String translateNamespacePrefixToUri( String prefix ) {
114 URI namespaceURI = this.namespaceMap.get( prefix );
115 return namespaceURI == null ? null : namespaceURI.toString();
116 }
117
118 /**
119 * @param prefix to get the namespace for
120 * @return the URI (namespace) associated with the given prefix, or <code>null</code> if it was not found.
121 */
122 public URI getURI( String prefix ) {
123 return this.namespaceMap.get( prefix );
124 }
125
126 @Override
127 public String toString() {
128 return namespaceMap.toString();
129 }
130 }