1 /*
2 * ModeShape (http://www.modeshape.org)
3 * See the COPYRIGHT.txt file distributed with this work for information
4 * regarding copyright ownership. Some portions may be licensed
5 * to Red Hat, Inc. under one or more contributor license agreements.
6 * See the AUTHORS.txt file in the distribution for a full listing of
7 * individual contributors.
8 *
9 * ModeShape is free software. Unless otherwise indicated, all code in ModeShape
10 * is licensed to you under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation; either version 2.1 of
12 * the License, or (at your option) any later version.
13 *
14 * ModeShape is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this software; if not, write to the Free
21 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
23 */
24 package org.modeshape.common.xml;
25
26 import java.util.HashMap;
27 import java.util.Iterator;
28 import java.util.Map;
29 import javax.xml.namespace.NamespaceContext;
30
31 /**
32 * A simple {@link NamespaceContext} implementation that maintains the namespace and prefix mappings discovered within an XML
33 * document.
34 */
35 public class SimpleNamespaceContext implements NamespaceContext {
36
37 private final Map<String, String> prefixToNamespace = new HashMap<String, String>();
38
39 /**
40 * {@inheritDoc}
41 */
42 public String getNamespaceURI( String prefix ) {
43 return this.prefixToNamespace.get(prefix);
44 }
45
46 /**
47 * {@inheritDoc}
48 */
49 public String getPrefix( String namespaceURI ) {
50 for (Map.Entry<String, String> entry : this.prefixToNamespace.entrySet()) {
51 if (entry.getValue().equals(namespaceURI)) return entry.getKey();
52 }
53 return null;
54 }
55
56 public SimpleNamespaceContext setNamespace( String prefix,
57 String namespaceUri ) {
58 this.prefixToNamespace.put(prefix, namespaceUri);
59 return this;
60 }
61
62 /**
63 * {@inheritDoc}
64 */
65 public Iterator<String> getPrefixes( String namespaceURI ) {
66 return this.prefixToNamespace.keySet().iterator();
67 }
68
69 }