1 //----------------------------------------------------------------------
2 //
3 // PerfectJPattern: "Design patterns are good but components are better!"
4 // Example.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.perfectjpattern.core.api.behavioral.command.*;
24 import org.perfectjpattern.core.api.structural.composite.*;
25 import org.perfectjpattern.core.structural.composite.*;
26
27 /**
28 * Startup Main for the Command Pattern Example code
29 *
30 * @author <a href="mailto:bravegag@hotmail.com">Giovanni Azua</a>
31 * @version $Revision: 1.0 $Date: Apr 5, 2008 10:11:17 PM $
32 */
33 //CHECKSTYLE:OFF
34 public final
35 class Example
36 // CHECKSTYLE:ON
37 {
38 //------------------------------------------------------------------------
39 // public
40 //------------------------------------------------------------------------
41 public static void
42 main(String[] anArguments)
43 {
44 //---------------------------------------------------------------
45 // Create simple use-cases with Open and Paste commands
46 //---------------------------------------------------------------
47 IParameterlessInvoker myOpenInvoker = new ParameterlessInvoker();
48 myOpenInvoker.setCommand(new ParameterlessCommand(new Open()));
49 myOpenInvoker.invoke();
50
51 IParameterlessInvoker myPasteInvoker = new ParameterlessInvoker();
52 myPasteInvoker.setCommand(new ParameterlessCommand(new Paste()));
53 myPasteInvoker.invoke();
54
55 //---------------------------------------------------------------
56 // Create macro use-case with multiple Open and Paste commands
57 // i.e. a Composite Command
58 //---------------------------------------------------------------
59 IComposite<IParameterlessCommand> myComposite = new Composite<
60 IParameterlessCommand>(IParameterlessCommand.class);
61 myComposite.add(new ParameterlessCommand(new Open()));
62 myComposite.add(new ParameterlessCommand(new Paste()));
63 myComposite.add(new ParameterlessCommand(new Open()));
64 myComposite.add(new ParameterlessCommand(new Paste()));
65
66 IParameterlessCommand myMacroCommand = myComposite.getComponent();
67
68 //---------------------------------------------------------------
69 // note how Invoker is agnostic of the underlying Composite
70 // Macro Command
71 //---------------------------------------------------------------
72 IParameterlessInvoker myMacroInvoker = new ParameterlessInvoker();
73 myMacroInvoker.setCommand(myMacroCommand);
74 myMacroInvoker.invoke();
75 }
76 }