1 /***
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that the following conditions are
4 * met :
5 *
6 * . Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 *
9 * . Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * . The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $Id: MessageOrder.java,v 1.7 2005/09/10 14:06:21 mat007 Exp $
29 */
30
31 package jtge.sample.chat.common.core.command;
32
33 import jtge.engine.command.AbstractOrder;
34 import jtge.engine.data.IContext;
35 import jtge.engine.handler.IConsumer;
36 import jtge.engine.user.IUser;
37 import jtge.sample.chat.common.core.IMessageView;
38
39 /***
40 * Implements a message order.
41 *
42 * @author Mathieu Champlon
43 * @version $Revision: 1.7 $ $Date: 2005/09/10 14:06:21 $
44 */
45 public class MessageOrder extends AbstractOrder
46 {
47 private static final long serialVersionUID = 7432702750477906860L;
48 private final String message;
49
50 /***
51 * Create a message.
52 *
53 * @param user the user issuing the message
54 * @param message the message
55 */
56 public MessageOrder( final IUser user, final String message )
57 {
58 super( user );
59 if( message == null )
60 throw new IllegalArgumentException( "argument 'message' is null" );
61 this.message = message;
62 }
63
64 /***
65 * {@inheritDoc}
66 */
67 public final void execute( final IContext context )
68 {
69 final IMessageView view = (IMessageView)context.get( IMessageView.class );
70 view.receive( getUser(), message );
71 final IConsumer output = (IConsumer)context.get( IConsumer.class );
72 output.handle( new MessageResult( getUser(), message ) );
73 }
74
75 /***
76 * {@inheritDoc}
77 */
78 public final boolean validate( final IUser user )
79 {
80 return user.equals( getUser() );
81 }
82 }