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1 | //---------------------------------------------------------------------- | |
2 | // | |
3 | // PerfectJPattern: "Design patterns are good but components are better!" | |
4 | // AbstractReceiver.java Copyright (c) 2009 Giovanni Azua Garcia | |
5 | // bravegag@hotmail.com | |
6 | // | |
7 | // This program is free software; you can redistribute it and/or | |
8 | // modify it under the terms of the GNU General Public License | |
9 | // as published by the Free Software Foundation; either version 3 | |
10 | // of the License, or (at your option) any later version. | |
11 | // | |
12 | // This program is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | // | |
17 | // You should have received a copy of the GNU General Public License | |
18 | // along with this program; if not, see <http://www.gnu.org/licenses/>. | |
19 | // | |
20 | //---------------------------------------------------------------------- | |
21 | package org.perfectjpattern.core.behavioral.command; | |
22 | ||
23 | import org.apache.commons.lang.*; | |
24 | import org.perfectjpattern.core.api.behavioral.command.*; | |
25 | ||
26 | ||
27 | /** | |
28 | * Reusable base abstract implementation of {@link IReceiver} | |
29 | * | |
30 | * @author <a href="mailto:bravegag@hotmail.com">Giovanni Azua</a> | |
31 | * @version $Revision: 1.0 $Date: Apr 13, 2008 2:24:53 PM $ | |
32 | */ | |
33 | public abstract | |
34 | class AbstractReceiver<P, R> | |
35 | implements IReceiver<P, R> | |
36 | { | |
37 | //------------------------------------------------------------------------ | |
38 | // public | |
39 | //------------------------------------------------------------------------ | |
40 | /** | |
41 | * {@inheritDoc} | |
42 | */ | |
43 | 3 | public R |
44 | getResult() | |
45 | { | |
46 | 3 | return theResult; |
47 | } | |
48 | ||
49 | //------------------------------------------------------------------------ | |
50 | /** | |
51 | * {@inheritDoc} | |
52 | */ | |
53 | 3 | public void |
54 | setParameter(P aParameter) | |
55 | throws IllegalArgumentException | |
56 | { | |
57 | 3 | Validate.notNull(aParameter, "'aParameter' must not be null"); |
58 | ||
59 | 3 | theParameter = aParameter; |
60 | } | |
61 | ||
62 | //------------------------------------------------------------------------ | |
63 | // protected | |
64 | //------------------------------------------------------------------------ | |
65 | /** | |
66 | * Returns the previously assigned Parameter | |
67 | * | |
68 | * @return the parameter | |
69 | */ | |
70 | 0 | protected P |
71 | getParameter() | |
72 | { | |
73 | 0 | return theParameter; |
74 | } | |
75 | ||
76 | //------------------------------------------------------------------------ | |
77 | /** | |
78 | * Sets the Result | |
79 | * | |
80 | * @param aResult the result to set | |
81 | */ | |
82 | 3 | protected void |
83 | setResult(R aResult) | |
84 | { | |
85 | assert aResult != null : "'aResult' must not be null"; | |
86 | ||
87 | 3 | theResult = aResult; |
88 | } | |
89 | ||
90 | //------------------------------------------------------------------------ | |
91 | // members | |
92 | //------------------------------------------------------------------------ | |
93 | private P theParameter; | |
94 | private R theResult; | |
95 | } |
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