| 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 | } |