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org.perfectjpattern.core.behavioral.command.TestInvoker.testInvokerInvalidStateDetected org.perfectjpattern.core.behavioral.command.TestInvoker.testInvokerInvalidStateDetected | 1 PASS | |
0.3478261
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org.perfectjpattern.core.behavioral.command.TestExample.testCommand org.perfectjpattern.core.behavioral.command.TestExample.testCommand | 1 PASS | |
1 | //---------------------------------------------------------------------- | |
2 | // | |
3 | // PerfectJPattern: "Design patterns are good but components are better!" | |
4 | // Invoker.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 | * Base core implementation of <code>IInvoker</code> interface. | |
29 | * <br/> | |
30 | * | |
31 | * @see IInvoker | |
32 | * | |
33 | * @param <P> Command Parameter context-specific. | |
34 | * @param <R> Command Result context-specific. | |
35 | * | |
36 | * @author <a href="mailto:bravegag@hotmail.com">Giovanni Azua</a> | |
37 | * @version $Revision: 1.0 $ $Date: Jun 23, 2007 2:34:57 AM $ | |
38 | */ | |
39 | public | |
40 | class Invoker<P, R> | |
41 | implements IInvoker<P, R> | |
42 | { | |
43 | //------------------------------------------------------------------------ | |
44 | // public | |
45 | //------------------------------------------------------------------------ | |
46 | /** | |
47 | * {@inheritDoc} | |
48 | */ | |
49 | 5 | public R |
50 | getResult() | |
51 | throws IllegalStateException | |
52 | { | |
53 | 5 | if (theCommand == null) |
54 | { | |
55 | throw new IllegalStateException("ICommand was not set."); | |
56 | } | |
57 | ||
58 | 4 | R myResult = theCommand.getResult(); |
59 | 4 | if (myResult == null) |
60 | { | |
61 | throw new IllegalStateException("No result available."); | |
62 | } | |
63 | ||
64 | 3 | return myResult; |
65 | } | |
66 | ||
67 | //------------------------------------------------------------------------ | |
68 | /** | |
69 | * {@inheritDoc} | |
70 | */ | |
71 | 7 | public void |
72 | invoke() | |
73 | throws IllegalStateException | |
74 | { | |
75 | 7 | if (theCommand == null) |
76 | { | |
77 | throw new IllegalStateException("ICommand was not set."); | |
78 | } | |
79 | ||
80 | 6 | if (theParameter != null) |
81 | { | |
82 | 3 | theCommand.setParameter(theParameter); |
83 | } | |
84 | ||
85 | 6 | theCommand.execute(); |
86 | } | |
87 | ||
88 | //------------------------------------------------------------------------ | |
89 | /** | |
90 | * {@inheritDoc} | |
91 | */ | |
92 | 7 | public void |
93 | setCommand(ICommand<P, R> aCommand) | |
94 | { | |
95 | 7 | theCommand = aCommand; |
96 | } | |
97 | ||
98 | //------------------------------------------------------------------------ | |
99 | /** | |
100 | * {@inheritDoc} | |
101 | */ | |
102 | 3 | public void |
103 | setParameter(P aParameter) | |
104 | throws IllegalArgumentException | |
105 | { | |
106 | 3 | Validate.notNull(aParameter, "'aParameter' must not be null"); |
107 | ||
108 | 3 | theParameter = aParameter; |
109 | } | |
110 | ||
111 | //------------------------------------------------------------------------ | |
112 | // members | |
113 | //------------------------------------------------------------------------ | |
114 | /** | |
115 | * The <code>ICommand</code> instance. | |
116 | */ | |
117 | private ICommand<P, R> theCommand; | |
118 | ||
119 | /** | |
120 | * The <code>IParameter</code> instance. | |
121 | */ | |
122 | private P theParameter; | |
123 | } |
|