ChangeForumTag


1   /**
2    * Copyright (C) 2001 Yasna.com. All rights reserved.
3    *
4    * ===================================================================
5    * The Apache Software License, Version 1.1
6    *
7    * Redistribution and use in source and binary forms, with or without
8    * modification, are permitted provided that the following conditions
9    * are met:
10   *
11   * 1. Redistributions of source code must retain the above copyright
12   *    notice, this list of conditions and the following disclaimer.
13   *
14   * 2. Redistributions in binary form must reproduce the above copyright
15   *    notice, this list of conditions and the following disclaimer in
16   *    the documentation and/or other materials provided with the
17   *    distribution.
18   *
19   * 3. The end-user documentation included with the redistribution,
20   *    if any, must include the following acknowledgment:
21   *       "This product includes software developed by
22   *        Yasna.com (http://www.yasna.com)."
23   *    Alternately, this acknowledgment may appear in the software itself,
24   *    if and wherever such third-party acknowledgments normally appear.
25   *
26   * 4. The names "Yazd" and "Yasna.com" must not be used to
27   *    endorse or promote products derived from this software without
28   *    prior written permission. For written permission, please
29   *    contact yazd@yasna.com.
30   *
31   * 5. Products derived from this software may not be called "Yazd",
32   *    nor may "Yazd" appear in their name, without prior written
33   *    permission of Yasna.com.
34   *
35   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38   * DISCLAIMED.  IN NO EVENT SHALL YASNA.COM OR
39   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46   * SUCH DAMAGE.
47   * ====================================================================
48   *
49   * This software consists of voluntary contributions made by many
50   * individuals on behalf of Yasna.com. For more information
51   * on Yasna.com, please see <http://www.yasna.com>.
52   */
53  
54  /**
55   * Copyright (C) 2000 CoolServlets.com. All rights reserved.
56   *
57   * ===================================================================
58   * The Apache Software License, Version 1.1
59   *
60   * Redistribution and use in source and binary forms, with or without
61   * modification, are permitted provided that the following conditions
62   * are met:
63   *
64   * 1. Redistributions of source code must retain the above copyright
65   *    notice, this list of conditions and the following disclaimer.
66   *
67   * 2. Redistributions in binary form must reproduce the above copyright
68   *    notice, this list of conditions and the following disclaimer in
69   *    the documentation and/or other materials provided with the
70   *    distribution.
71   *
72   * 3. The end-user documentation included with the redistribution,
73   *    if any, must include the following acknowledgment:
74   *       "This product includes software developed by
75   *        CoolServlets.com (http://www.coolservlets.com)."
76   *    Alternately, this acknowledgment may appear in the software itself,
77   *    if and wherever such third-party acknowledgments normally appear.
78   *
79   * 4. The names "Jive" and "CoolServlets.com" must not be used to
80   *    endorse or promote products derived from this software without
81   *    prior written permission. For written permission, please
82   *    contact webmaster@coolservlets.com.
83   *
84   * 5. Products derived from this software may not be called "Jive",
85   *    nor may "Jive" appear in their name, without prior written
86   *    permission of CoolServlets.com.
87   *
88   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
89   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
90   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
91   * DISCLAIMED.  IN NO EVENT SHALL COOLSERVLETS.COM OR
92   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
93   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
94   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
95   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
96   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
97   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
98   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
99   * SUCH DAMAGE.
100  * ====================================================================
101  *
102  * This software consists of voluntary contributions made by many
103  * individuals on behalf of CoolServlets.com. For more information
104  * on CoolServlets.com, please see <http://www.coolservlets.com>.
105  */
106 
107 package com.Yasna.forum.tags;
108 
109 import java.io.*;
110 import javax.servlet.*;
111 import javax.servlet.jsp.*;
112 import javax.servlet.jsp.tagext.*;
113 import javax.servlet.http.*;
114 import com.Yasna.forum.*;
115 import com.Yasna.forum.tags.*;
116 
117 /**
118  * JSP Tag <b>change_forum</b>, used with <b>post</b> or <b>thread</b> tag to set
119  * an alternate forum id to post message or move message to, or a <b>forum</b> tag to change forum being viewed.
120  * <p>
121  * Must be nested within a <b>post</b>, <b>thread</b>, or <b>forum</b> tag.
122  * <p>
123  * The forumID to post or move message to or change to is obtained from the body of the tag.
124  * <p>
125  * This tag is not required to post a message, but if used it must
126  * precede the <b>post_message</b> tag.
127  * <p>
128  * This tag is required to move a message and must precede the
129  * <b>move_message</b> or <b>move_thread</b> tag.
130  * <p>
131  * JSP Tag Lib Descriptor
132  * <p><pre>
133  *  &lt;name&gt;change_forum&lt;/name&gt;
134  *  &lt;tagclass&gt;com.Yasna.forum.tags.ChangeForumTag&lt;/tagclass&gt;
135  *  &lt;bodycontent&gt;JSP&lt;/bodycontent&gt;
136  *  &lt;info&gt;Changes to an alternate forum, used to post or move message to, or use a different forum.&lt;/info&gt;
137  * </pre>
138  *
139  * @see PostTag
140  * @see ThreadTag
141  * @see ForumTag
142  *
143  * @author Glenn Nielsen
144  */
145 
146 public class ChangeForumTag extends BodyTagSupport
147 {
148   private YazdRequest jr = null;
149 
150   /**
151    * Method called at start of tag, just returns EVAL_BODY_TAG
152    *
153    * @return EVAL_BODY_TAG
154    */
155   public final int doStartTag() throws JspException
156   {
157     return EVAL_BODY_TAG;
158   }
159 
160   /**
161    * Read the body of the change_forum tag to obtain the value
162    * of the forumID to post message to.
163    *
164    * @return SKIP_BODY
165    */
166   public final int doAfterBody() throws JspException
167   {
168     // Get the user request information
169     jr = (YazdRequest)pageContext.getAttribute("yazdUserRequest",
170                 PageContext.REQUEST_SCOPE);
171     if( jr == null )
172       throw new JspException("Yazd change_forum tag, could not find request");
173 
174     // Use the body of the tag as input for the forumID
175     BodyContent body = getBodyContent();
176     String   s = body.getString();
177     // Clear the body since we only used it to get the forumID
178     body.clearBody();
179 
180     int fid = 0;
181     try {
182       fid = Integer.valueOf(s).intValue();
183     } catch(NumberFormatException   e) {
184       throw new JspException(
185     "Yazd change_forum tag, body of tag is not a forumID integer");
186     }
187 
188     // Get the Forum
189     Forum pf = null;
190     try {
191       pf = jr.getForumFactory().getForum(fid);
192     } catch(Exception   e) {
193       throw new JspException(
194     "Yazd change_forum tag, could not find forum with ID: " + fid);
195     }
196 
197     if( pf == null ) {
198       throw new JspException(
199     "Yazd change_forum tag, could not find forum with ID: " + fid);
200     }
201 
202     // Get the parent tag
203     ChangeForum sfi = null;
204     try {
205       sfi = (ChangeForum)this.findAncestorWithClass(this,
206        Class.forName("com.Yasna.forum.tags.ChangeForum"));
207     } catch(Exception   e) {
208     }
209 
210     // Set the forumID
211     if( sfi == null ) {
212       throw new JspException(
213     "Yazd change_forum tag must be nested inside a post or move tag");
214     }
215     sfi.changeForum(pf);
216 
217     return SKIP_BODY;
218   }
219 
220 }
221
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