1 /*
2 * $Header: /home/cvs/jakarta-commons-sandbox/jelly/src/java/org/apache/commons/jelly/impl/StaticTag.java,v 1.10 2002/07/15 11:22:27 jstrachan Exp $
3 * $Revision: 1.10 $
4 * $Date: 2002/07/15 11:22:27 $
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: StaticTag.java,v 1.10 2002/07/15 11:22:27 jstrachan Exp $
61 */
62 package org.apache.commons.jelly.impl;
63
64 import org.apache.commons.jelly.JellyContext;
65 import org.apache.commons.jelly.DynaTag;
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 /***
73 * <p><code>StaticTag</code> represents a static XML element
74 * which echos itself to XMLOutput when it is invoked.</p>
75 *
76 * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
77 * @version $Revision: 1.10 $
78 */
79
80 public class StaticTag extends TagSupport implements DynaTag {
81
82 /*** The namespace URI */
83 private String uri;
84
85 /*** The qualified name */
86 private String qname;
87
88 /*** The local name */
89 private String localName;
90
91 /*** The XML Attributes */
92 private AttributesImpl attributes = new AttributesImpl();
93
94 public StaticTag() {
95 }
96
97 public StaticTag(String uri, String localName, String qname) {
98 this.uri = uri;
99 this.localName = localName;
100 this.qname = qname;
101 }
102
103 public String toString() {
104 return super.toString() + "[qname=" + qname + ";attributes=" + attributes + "]";
105 }
106
107 // Tag interface
108 //-------------------------------------------------------------------------
109 public void doTag(XMLOutput output) throws Exception {
110 output.startElement(uri, localName, qname, attributes);
111 invokeBody(output);
112 output.endElement(uri, localName, qname);
113 }
114
115 // DynaTag interface
116 //-------------------------------------------------------------------------
117 public void setAttribute(String name, Object value) {
118 // ### we'll assume that all attributes are in no namespace!
119 // ### this is severely limiting!
120 // ### - Tag attributes should allow for namespace aware
121 int index = attributes.getIndex("", name);
122 if (index >= 0) {
123 attributes.removeAttribute(index);
124 }
125 // treat null values as no attribute
126 if (value != null) {
127 attributes.addAttribute("", name, name, "CDATA", value.toString());
128 }
129 }
130
131 // Properties
132 //-------------------------------------------------------------------------
133 public String getUri() {
134 return uri;
135 }
136
137 public void setUri(String uri) {
138 this.uri = uri;
139 }
140
141 public String getQName() {
142 return qname;
143 }
144
145 public void setQName(String qname) {
146 this.qname = qname;
147 int idx = qname.indexOf(':');
148 if (idx >= 0) {
149 this.localName = qname.substring(idx + 1);
150 }
151 else {
152 this.localName = qname;
153 }
154 }
155
156 public String getLocalName() {
157 return localName;
158 }
159
160 public void setLocalName(String localName) {
161 this.localName = localName;
162 if (qname == null || !qname.endsWith(localName)) {
163 localName = qname;
164 }
165 }
166 }
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