Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
SimpleNamespaceContext |
|
| 2.4;2.4 |
1 | /* | |
2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/SimpleNamespaceContext.java,v 1.18 2006/06/03 20:19:26 elharo Exp $ | |
3 | * $Revision: 1.18 $ | |
4 | * $Date: 2006/06/03 20:19:26 $ | |
5 | * | |
6 | * ==================================================================== | |
7 | * | |
8 | * Copyright 2000-2002 bob mcwhirter & James Strachan. | |
9 | * All rights reserved. | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions are | |
13 | * met: | |
14 | * | |
15 | * * Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions and the following disclaimer. | |
17 | * | |
18 | * * Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * | |
22 | * * Neither the name of the Jaxen Project nor the names of its | |
23 | * contributors may be used to endorse or promote products derived | |
24 | * from this software without specific prior written permission. | |
25 | * | |
26 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
27 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
28 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
29 | * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | |
30 | * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
31 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
32 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
33 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
34 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
35 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
36 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
37 | * | |
38 | * ==================================================================== | |
39 | * This software consists of voluntary contributions made by many | |
40 | * individuals on behalf of the Jaxen Project and was originally | |
41 | * created by bob mcwhirter <bob@werken.com> and | |
42 | * James Strachan <jstrachan@apache.org>. For more information on the | |
43 | * Jaxen Project, please see <http://www.jaxen.org/>. | |
44 | * | |
45 | * $Id: SimpleNamespaceContext.java,v 1.18 2006/06/03 20:19:26 elharo Exp $ | |
46 | */ | |
47 | ||
48 | ||
49 | package org.jaxen; | |
50 | ||
51 | import java.io.Serializable; | |
52 | import java.util.HashMap; | |
53 | import java.util.Iterator; | |
54 | import java.util.Map; | |
55 | ||
56 | /** | |
57 | * Provides mappings from namespace prefix to namespace URI to the XPath | |
58 | * engine. | |
59 | */ | |
60 | public class SimpleNamespaceContext implements NamespaceContext, Serializable | |
61 | { | |
62 | ||
63 | /** | |
64 | * | |
65 | */ | |
66 | private static final long serialVersionUID = -808928409643497762L; | |
67 | // XXX should this prebind the xml prefix? | |
68 | private Map namespaces; | |
69 | ||
70 | /** | |
71 | * Creates a new empty namespace context. | |
72 | */ | |
73 | public SimpleNamespaceContext() | |
74 | 1746 | { |
75 | 1746 | this.namespaces = new HashMap(); |
76 | 1746 | } |
77 | ||
78 | /** | |
79 | * Creates a new namespace context pre-populated with the specified bindings. | |
80 | * | |
81 | * @param namespaces the initial namespace bindings in scope. The keys in this | |
82 | * must be strings containing the prefixes and the values are strings | |
83 | * containing the namespace URIs. | |
84 | * | |
85 | * @throws NullPointerException if the argument is null | |
86 | * @throws ClassCastException if any keys or values in the map are not strings | |
87 | */ | |
88 | public SimpleNamespaceContext(Map namespaces) | |
89 | 6 | { |
90 | 6 | Iterator entries = namespaces.entrySet().iterator(); |
91 | 6 | while (entries.hasNext()) { |
92 | 4 | Map.Entry entry = (Map.Entry) entries.next(); |
93 | 4 | if (! (entry.getKey() instanceof String) |
94 | || ! (entry.getValue() instanceof String)) { | |
95 | 4 | throw new ClassCastException("Non-string namespace binding"); |
96 | } | |
97 | 0 | } |
98 | 2 | this.namespaces = new HashMap(namespaces); |
99 | 2 | } |
100 | ||
101 | /** | |
102 | * Adds all the namespace declarations that are in scope on the given | |
103 | * element. In the case of an XSLT stylesheet, this would be the element | |
104 | * that has the XPath expression in one of its attributes; e.g. | |
105 | * <code><xsl:if test="condition/xpath/expression"></code>. | |
106 | * | |
107 | * @param nav the navigator for use in conjunction with | |
108 | * <code>element</code> | |
109 | * @param element the element to copy the namespaces from | |
110 | * @throws UnsupportedAxisException if the navigator does not support the | |
111 | * namespace axis | |
112 | */ | |
113 | public void addElementNamespaces( Navigator nav, Object element ) | |
114 | throws UnsupportedAxisException | |
115 | { | |
116 | 4 | Iterator namespaceAxis = nav.getNamespaceAxisIterator( element ); |
117 | ||
118 | 8 | while ( namespaceAxis.hasNext() ) { |
119 | 4 | Object namespace = namespaceAxis.next(); |
120 | 4 | String prefix = nav.getNamespacePrefix( namespace ); |
121 | 4 | String uri = nav.getNamespaceStringValue( namespace ); |
122 | 4 | if ( translateNamespacePrefixToUri(prefix) == null ) { |
123 | 4 | addNamespace( prefix, uri ); |
124 | } | |
125 | 4 | } |
126 | 4 | } |
127 | ||
128 | // ???? What if prefix or URI is null, or both? | |
129 | /** | |
130 | * Binds a prefix to a URI in this context. | |
131 | * | |
132 | * @param prefix the namespace prefix | |
133 | * @param URI the namespace URI | |
134 | */ | |
135 | public void addNamespace(String prefix, String URI) | |
136 | { | |
137 | 94 | this.namespaces.put( prefix, URI ); |
138 | 94 | } |
139 | ||
140 | public String translateNamespacePrefixToUri(String prefix) | |
141 | { | |
142 | 4494 | if ( this.namespaces.containsKey( prefix ) ) |
143 | { | |
144 | 220 | return (String) this.namespaces.get( prefix ); |
145 | } | |
146 | ||
147 | 4274 | return null; |
148 | } | |
149 | } |