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: AbstractCommand.java,v 1.3 2005/08/26 18:09:36 mat007 Exp $
29 */
30
31 package jtge.engine.command;
32
33 import jtge.engine.user.IUser;
34
35 /***
36 * Abstracts command behaviours.
37 *
38 * @author Mathieu Champlon
39 * @version $Revision: 1.3 $ $Date: 2005/08/26 18:09:36 $
40 */
41 public abstract class AbstractCommand implements ICommand
42 {
43 /***
44 * {@inheritDoc}
45 */
46 public final ICommand filter( final IFilter filter )
47 {
48 if( filter == null || filter.validate( this ) )
49 return this;
50 return null;
51 }
52
53 /***
54 * {@inheritDoc}
55 */
56 public final ICommand sort( final ISorter sorter )
57 {
58 return this;
59 }
60
61 /***
62 * {@inheritDoc}
63 */
64 public boolean validate( final IUser user )
65 {
66 return false;
67 }
68 }