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Java > Open Source Codes > com > caucho > portal > generic > taglib > ParamTag


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  * Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  * notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in
15  * the documentation and/or other materials provided with the
16  * distribution.
17  *
18  * 3. The end-user documentation included with the redistribution, if
19  * any, must include the following acknowlegement:
20  * "This product includes software developed by the
21  * Caucho Technology (http://www.caucho.com/)."
22  * Alternately, this acknowlegement may appear in the software itself,
23  * if and wherever such third-party acknowlegements normally appear.
24  *
25  * 4. The names "Hessian", "Resin", and "Caucho" must not be used to
26  * endorse or promote products derived from this software without prior
27  * written permission. For written permission, please contact
28  * info@caucho.com.
29  *
30  * 5. Products derived from this software may not be called "Resin"
31  * nor may "Resin" appear in their names without prior written
32  * permission of Caucho Technology.
33  *
34  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
35  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
36  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
37  * DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
38  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
39  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
40  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
41  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
42  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
43  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
44  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45  *
46  * @author Sam
47  */
48
49
50 package com.caucho.portal.generic.taglib;
51
52 import javax.servlet.jsp.JspException JavaDoc;
53 import javax.servlet.jsp.tagext.TagSupport JavaDoc;
54
55 /**
56  * A parameter for {@link RenderUrlTag} or {@link ActionUrlTag}.
57  */
58 public class ParamTag extends TagSupport JavaDoc {
59   private String JavaDoc _name;
60   private String JavaDoc _value;
61   private String JavaDoc _namespace;
62
63   /**
64    * The parameter name, required.
65    */
66   public void setName(String JavaDoc name)
67   {
68     _name = name;
69   }
70
71   /**
72    * The parameter value, required.
73    */
74   public void setValue(String JavaDoc value)
75   {
76     _value = value;
77   }
78
79   /**
80    * The namespace, optional.
81    */
82   public void setNamespace(String JavaDoc namespace)
83   {
84     _namespace = namespace;
85   }
86
87   /**
88    * Process the tag.
89    */
90   public int doEndTag()
91     throws JspException JavaDoc
92   {
93     Object JavaDoc parent = getParent();
94
95     if (! (parent instanceof AbstractUrlTag))
96       throw new JspException JavaDoc("portlet:param requires portlet:renderUrl or portlet:actionUrl parent.");
97
98     AbstractUrlTag urlTag = (AbstractUrlTag) parent;
99
100     if (_namespace == null) {
101       urlTag.addParam(_name, _value);
102     }
103     else {
104       urlTag.addParam(_namespace, _name, _value);
105     }
106     
107     return EVAL_PAGE;
108   }
109 }
110
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