1 package org.codehaus.mojo.appassembler.daemon.merge;
2
3 /*
4 * The MIT License
5 *
6 * Copyright (c) 2006-2012, The Codehaus
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy of
9 * this software and associated documentation files (the "Software"), to deal in
10 * the Software without restriction, including without limitation the rights to
11 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
12 * of the Software, and to permit persons to whom the Software is furnished to do
13 * so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in all
16 * copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * SOFTWARE.
25 */
26
27 import java.util.List;
28
29 import org.codehaus.mojo.appassembler.daemon.DaemonGeneratorException;
30 import org.codehaus.mojo.appassembler.model.Classpath;
31 import org.codehaus.mojo.appassembler.model.Daemon;
32 import org.codehaus.mojo.appassembler.model.JvmSettings;
33 import org.codehaus.plexus.logging.AbstractLogEnabled;
34 import org.codehaus.plexus.util.StringUtils;
35
36 /**
37 * @author <a href="mailto:trygve.laugstol@objectware.no">Trygve Laugstøl</a>
38 * @version $Id$
39 * @plexus.component
40 */
41 public class DefaultDaemonMerger
42 extends AbstractLogEnabled
43 implements DaemonMerger
44 {
45 // -----------------------------------------------------------------------
46 // DaemonMerger Implementation
47 // -----------------------------------------------------------------------
48
49 public Daemon mergeDaemons( Daemon dominant, Daemon recessive )
50 throws DaemonGeneratorException
51 {
52 if ( dominant == null )
53 {
54 return recessive;
55 }
56
57 if ( recessive == null )
58 {
59 return dominant;
60 }
61
62 Daemon result = new Daemon();
63
64 result.setId( select( dominant.getId(), recessive.getId() ) );
65 result.setMainClass( select( dominant.getMainClass(), recessive.getMainClass() ) );
66 result.setClasspath( (Classpath) select( dominant.getClasspath(), recessive.getClasspath() ) );
67 result.setCommandLineArguments( select( dominant.getCommandLineArguments(), recessive.getCommandLineArguments() ) );
68 result.setConfigurationDirectory( select( dominant.getConfigurationDirectory(),
69 recessive.getConfigurationDirectory() ) );
70 // This should probably be improved
71 result.setJvmSettings( (JvmSettings) select( dominant.getJvmSettings(), recessive.getJvmSettings() ) );
72 result.setLicenseHeaderFile( select( dominant.getLicenseHeaderFile(), recessive.getLicenseHeaderFile() ) );
73 result.setShowConsoleWindow( dominant.isShowConsoleWindow() );
74 result.setRepositoryName( select( dominant.getRepositoryName(), recessive.getRepositoryName() ) );
75 result.setEndorsedDir( select( dominant.getEndorsedDir(), recessive.getEndorsedDir() ) );
76
77 return result;
78 }
79
80 // -----------------------------------------------------------------------
81 // Private
82 // -----------------------------------------------------------------------
83
84 private String select( String dominant, String recessive )
85 {
86 if ( StringUtils.isNotEmpty( dominant ) )
87 {
88 return dominant;
89 }
90 else
91 {
92 return recessive;
93 }
94 }
95
96 private List<String> select( List<String> dominant, List<String> recessive )
97 {
98 // Even if the list is empty, return it. This makes it possible to clear the default list.
99
100 // TODO: The above is not possible as long as the modello generated stuff returns an empty list on not set
101 // fields.
102 if ( dominant != null && dominant.size() > 0 )
103 {
104 return dominant;
105 }
106 else
107 {
108 return recessive;
109 }
110 }
111
112 private Object select( Object dominant, Object recessive )
113 {
114 if ( dominant != null )
115 {
116 return dominant;
117 }
118 else
119 {
120 return recessive;
121 }
122 }
123 }