Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
SimpleNamespaceContext |
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| 1.8;1.8 |
1 | /* |
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2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/SimpleNamespaceContext.java,v 1.15 2005/06/28 13:44:44 elharo Exp $ |
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3 | * $Revision: 1.15 $ |
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4 | * $Date: 2005/06/28 13:44:44 $ |
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5 | * |
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6 | * ==================================================================== |
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7 | * |
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8 | * Copyright (C) 2000-2002 bob mcwhirter & James Strachan. |
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9 | * All rights reserved. |
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10 | * |
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11 | * Redistribution and use in source and binary forms, with or without |
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12 | * modification, are permitted provided that the following conditions |
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13 | * are met: |
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14 | * |
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15 | * 1. Redistributions of source code must retain the above copyright |
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16 | * notice, this list of conditions, and the following disclaimer. |
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17 | * |
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18 | * 2. Redistributions in binary form must reproduce the above copyright |
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19 | * notice, this list of conditions, and the disclaimer that follows |
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20 | * these conditions in the documentation and/or other materials |
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21 | * provided with the distribution. |
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22 | * |
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23 | * 3. The name "Jaxen" must not be used to endorse or promote products |
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24 | * derived from this software without prior written permission. For |
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25 | * written permission, please contact license@jaxen.org. |
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26 | * |
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27 | * 4. Products derived from this software may not be called "Jaxen", nor |
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28 | * may "Jaxen" appear in their name, without prior written permission |
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29 | * from the Jaxen Project Management (pm@jaxen.org). |
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30 | * |
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31 | * In addition, we request (but do not require) that you include in the |
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32 | * end-user documentation provided with the redistribution and/or in the |
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33 | * software itself an acknowledgement equivalent to the following: |
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34 | * "This product includes software developed by the |
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35 | * Jaxen Project <http://www.jaxen.org/>." |
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36 | * Alternatively, the acknowledgment may be graphical using the logos |
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37 | * available at http://www.jaxen.org/ |
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38 | * |
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39 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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40 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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41 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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42 | * DISCLAIMED. IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT |
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43 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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45 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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46 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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47 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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48 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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49 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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50 | * SUCH DAMAGE. |
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51 | * |
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52 | * ==================================================================== |
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53 | * This software consists of voluntary contributions made by many |
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54 | * individuals on behalf of the Jaxen Project and was originally |
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55 | * created by bob mcwhirter <bob@werken.com> and |
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56 | * James Strachan <jstrachan@apache.org>. For more information on the |
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57 | * Jaxen Project, please see <http://www.jaxen.org/>. |
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58 | * |
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59 | * $Id: SimpleNamespaceContext.java,v 1.15 2005/06/28 13:44:44 elharo Exp $ |
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60 | */ |
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61 | ||
62 | ||
63 | package org.jaxen; |
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64 | ||
65 | import java.io.Serializable; |
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66 | import java.util.HashMap; |
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67 | import java.util.Iterator; |
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68 | import java.util.Map; |
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69 | ||
70 | /** |
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71 | * Provides mappings from namespace prefix to namespace URI to the XPath |
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72 | * engine. |
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73 | */ |
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74 | public class SimpleNamespaceContext implements NamespaceContext, Serializable |
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75 | { |
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76 | ||
77 | // XXX should this prebind the xml prefix? |
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78 | private Map namespaces; |
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79 | ||
80 | /** |
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81 | * Creates a new empty namespace context. |
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82 | */ |
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83 | public SimpleNamespaceContext() |
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84 | 5010 | { |
85 | 5010 | this.namespaces = new HashMap(); |
86 | 5010 | } |
87 | ||
88 | /** |
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89 | * Creates a new namespace context pre-populated with the specified bindings. |
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90 | * |
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91 | * @param namespaces the initial namespace bindings in scope. The keys in this |
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92 | * must be strings containing the prefixes and the values are strings |
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93 | * containing the namespace URIs. |
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94 | * |
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95 | * @throws NullPointerException if the argument is null |
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96 | */ |
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97 | public SimpleNamespaceContext(Map namespaces) |
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98 | 6 | { |
99 | // FIXME this is dangerous. We should check that |
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100 | // the contents are strings. |
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101 | 6 | this.namespaces = new HashMap(namespaces); |
102 | 6 | } |
103 | ||
104 | /** |
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105 | * Adds all the namespace declarations that are in scope on the given |
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106 | * element. In the case of an XSLT stylesheet, this would be the element |
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107 | * that has the XPath expression in one of its attributes; e.g. |
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108 | * <code><xsl:if test="condition/xpath/expression"></code>. |
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109 | * |
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110 | * @param nav the navigator for use in conjunction with |
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111 | * <code>element</code> |
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112 | * @param element the element to copy the namespaces from |
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113 | * @throws UnsupportedAxisException if the navigator does not support the |
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114 | * namespace axis |
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115 | */ |
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116 | public void addElementNamespaces( Navigator nav, Object element ) |
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117 | throws UnsupportedAxisException |
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118 | { |
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119 | 12 | Iterator namespaceAxis = nav.getNamespaceAxisIterator( element ); |
120 | ||
121 | 24 | while ( namespaceAxis.hasNext() ) { |
122 | 12 | Object namespace = namespaceAxis.next(); |
123 | 12 | String prefix = nav.getNamespacePrefix( namespace ); |
124 | 12 | String uri = nav.getNamespaceStringValue( namespace ); |
125 | 12 | if ( translateNamespacePrefixToUri(prefix) == null ) { |
126 | 12 | addNamespace( prefix, uri ); |
127 | } |
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128 | } |
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129 | 12 | } |
130 | ||
131 | // ???? What if prefix or URI is null, or both? |
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132 | /** |
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133 | * Binds a prefix to a URI in this context. |
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134 | * |
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135 | * @param prefix the namespace prefix |
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136 | * @param URI the namespace URI |
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137 | */ |
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138 | public void addNamespace(String prefix, String URI) |
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139 | { |
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140 | 258 | this.namespaces.put( prefix, URI ); |
141 | 258 | } |
142 | ||
143 | public String translateNamespacePrefixToUri(String prefix) |
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144 | { |
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145 | 13326 | if ( this.namespaces.containsKey( prefix ) ) |
146 | { |
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147 | 636 | return (String) this.namespaces.get( prefix ); |
148 | } |
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149 | ||
150 | 12690 | return null; |
151 | } |
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152 | } |