DenyRequest


1   /*
2    * JORAM: Java(TM) Open Reliable Asynchronous Messaging
3    * Copyright (C) 2001 - ScalAgent Distributed Technologies
4    * Copyright (C) 1996 - Dyade
5    *
6    * This library is free software; you can redistribute it and/or
7    * modify it under the terms of the GNU Lesser General Public
8    * License as published by the Free Software Foundation; either
9    * version 2.1 of the License, or any later version.
10   * 
11   * This library is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   * Lesser General Public License for more details.
15   * 
16   * You should have received a copy of the GNU Lesser General Public
17   * License along with this library; if not, write to the Free Software
18   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
19   * USA.
20   *
21   * Initial developer(s): Frederic Maistre (INRIA)
22   * Contributor(s):
23   */
24  package org.objectweb.joram.mom.notifications;
25  
26  import java.util.Enumeration  ;
27  import java.util.Vector  ;
28  
29  /**
30   * A <code>DenyRequest</code> instance is used by a client agent
31   * for denying one or many messages on a queue.
32   */
33  public class DenyRequest extends AbstractRequest
34  {
35    /** Message identifier. */
36    private String   msgId = null;
37    /** Vector of message identifiers. */
38    private Vector   msgIds = null;
39  
40  
41    /**
42     * Constructs an <code>DenyRequest</code> instance.
43     *
44     * @param clientContext  Identifies a client context.
45     * @param requestId  Request identifier.
46     * @param msgIds  Vector of message identifiers.
47     */
48    public DenyRequest(int clientContext, int requestId, Vector   msgIds)
49    {
50      super(clientContext, requestId);
51      this.msgIds = msgIds;
52    }
53  
54    /**
55     * Constructs an <code>DenyRequest</code> instance.
56     *
57     * @param clientContext  Identifies a client context.
58     * @param requestId  Request identifier.
59     * @param msgIds  Message identifier.
60     */
61    public DenyRequest(int clientContext, int requestId, String   msgId)
62    {
63      super(clientContext, requestId);
64      this.msgId = msgId;
65    }
66  
67    /**
68     * Constructs an <code>DenyRequest</code> instance.
69     *
70     * @param clientContext  Identifies a client context.
71     */
72    public DenyRequest(int clientContext)
73    {
74      super(clientContext, -1);
75    }
76  
77  
78    /** Returns the denied messages' identifiers. */
79    public Enumeration   getIds()
80    {
81      if (msgIds == null) {
82        msgIds = new Vector  ();
83        if (msgId != null)
84          msgIds.add(msgId);
85      }
86      return msgIds.elements();
87    }
88  
89    /**
90     * Appends a string image for this object to the StringBuffer parameter.
91     *
92     * @param output
93     *    buffer to fill in
94     * @return
95      <code>output</code> buffer is returned
96     */
97    public StringBuffer   toString(StringBuffer   output) {
98      output.append('(');
99      super.toString(output);
100     output.append(",msgId=").append(msgId);
101     output.append(",msgIds=").append(msgIds);
102     output.append(')');
103 
104     return output;
105   }
106 } 
107 
108 
109
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