1 /*
2 * $Header: /home/cvs/jakarta-commons-sandbox/jelly/src/java/org/apache/commons/jelly/tags/xml/ExprTag.java,v 1.8 2002/05/20 10:09:28 jstrachan Exp $
3 * $Revision: 1.8 $
4 * $Date: 2002/05/20 10:09:28 $
5 *
6 * ====================================================================
7 *
8 * The Apache Software License, Version 1.1
9 *
10 * Copyright (c) 1999-2002 The Apache Software Foundation. All rights
11 * reserved.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 *
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in
22 * the documentation and/or other materials provided with the
23 * distribution.
24 *
25 * 3. The end-user documentation included with the redistribution, if
26 * any, must include the following acknowlegement:
27 * "This product includes software developed by the
28 * Apache Software Foundation (http://www.apache.org/)."
29 * Alternately, this acknowlegement may appear in the software itself,
30 * if and wherever such third-party acknowlegements normally appear.
31 *
32 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
33 * Foundation" must not be used to endorse or promote products derived
34 * from this software without prior written permission. For written
35 * permission, please contact apache@apache.org.
36 *
37 * 5. Products derived from this software may not be called "Apache"
38 * nor may "Apache" appear in their names without prior written
39 * permission of the Apache Group.
40 *
41 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
42 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
44 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
45 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
47 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
48 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
49 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
50 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
51 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * SUCH DAMAGE.
53 * ====================================================================
54 *
55 * This software consists of voluntary contributions made by many
56 * individuals on behalf of the Apache Software Foundation. For more
57 * information on the Apache Software Foundation, please see
58 * <http://www.apache.org/>.
59 *
60 * $Id: ExprTag.java,v 1.8 2002/05/20 10:09:28 jstrachan Exp $
61 */
62 package org.apache.commons.jelly.tags.xml;
63
64 import org.apache.commons.jelly.JellyContext;
65 import org.apache.commons.jelly.JellyException;
66 import org.apache.commons.jelly.TagSupport;
67 import org.apache.commons.jelly.XMLOutput;
68
69 import org.xml.sax.Attributes;
70 import org.xml.sax.helpers.AttributesImpl;
71
72 /*** A tag to produce an XML element which can contain other attributes
73 * or elements like the <code><xsl:element></code> tag.
74 *
75 * @author James Strachan
76 * @version $Revision: 1.1 $
77 */
78 public class ElementTag extends TagSupport {
79
80 /*** The namespace URI */
81 private String namespace;
82
83 /*** The qualified name */
84 private String name;
85
86 /*** The XML Attributes */
87 private AttributesImpl attributes = new AttributesImpl();
88
89
90 public ElementTag() {
91 }
92
93 public void setAttributeValue( String name, String value ) {
94 // ### we'll assume that all attributes are in no namespace!
95 // ### this is severely limiting!
96 // ### we should be namespace aware
97 int index = attributes.getIndex("", name);
98 if (index >= 0) {
99 attributes.removeAttribute(index);
100 }
101 // treat null values as no attribute
102 if (value != null) {
103 attributes.addAttribute("", name, name, "CDATA", value.toString());
104 }
105 }
106
107 // Tag interface
108 //-------------------------------------------------------------------------
109 public void doTag(XMLOutput output) throws Exception {
110 String localName = null;
111 int idx = name.indexOf(':');
112 if (idx >= 0) {
113 localName = name.substring(idx + 1);
114 }
115 else {
116 localName = name;
117 }
118 output.startElement(namespace, localName, name, attributes);
119 invokeBody( output);
120 output.endElement(namespace, localName, name);
121 }
122
123 // Properties
124 //-------------------------------------------------------------------------
125
126 /***
127 * @return the qualified name of the element
128 */
129 public String getName() {
130 return name;
131 }
132
133 /***
134 * Sets the qualified name of the element
135 */
136 public void setName(String name) {
137 this.name = name;
138 }
139
140 /***
141 * @return the namespace URI of the element
142 */
143 public String getURI() {
144 return namespace;
145 }
146
147 /***
148 * Sets the namespace URI of the element
149 */
150 public void setURI(String namespace) {
151 this.namespace = namespace;
152 }
153 }
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