1 package org.apache.maven.plugin.ear.output;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.util.HashMap;
23 import java.util.Map;
24
25 /**
26 * Provides access to {@link FileNameMapping} implementations.
27 * <p/>
28 * Two basic implementations are provided by default:
29 * <ul>
30 * <li>standard: the default implementation</li>
31 * <li>full: an implementation that maps to a 'full' file name, i.e. containing the groupId</li>
32 * </ul>
33 *
34 * @author <a href="snicoll@apache.org">Stephane Nicoll</a>
35 * @version $Id: FileNameMappingFactory.java 485857 2006-12-11 20:34:39Z snicoll $
36 */
37 public class FileNameMappingFactory
38 {
39 public static final String STANDARD_FILE_NAME_MAPPING = "standard";
40
41 public static final String FULL_FILE_NAME_MAPPING = "full";
42
43 public static final FileNameMappingFactory INSTANCE = new FileNameMappingFactory();
44
45 private final Map mappings;
46
47 private FileNameMappingFactory()
48 {
49 mappings = new HashMap();
50 mappings.put( STANDARD_FILE_NAME_MAPPING, new StandardFileNameMapping() );
51 mappings.put( FULL_FILE_NAME_MAPPING, new FullFileNameMapping() );
52 }
53
54 public FileNameMapping getDefaultFileNameMapping()
55 {
56 return getFileNameMapping( STANDARD_FILE_NAME_MAPPING );
57 }
58
59 /**
60 * Returns the file name mapping implementation based on a logical name
61 * of a fully qualified name of the class.
62 *
63 * @param nameOrClass a name of the fqn of the implementation
64 * @return the file name mapping implementation
65 * @throws IllegalStateException if the implementation is not found
66 */
67 public FileNameMapping getFileNameMapping( final String nameOrClass )
68 throws IllegalStateException
69 {
70 // Check if it's there yet
71 if ( mappings.containsKey( nameOrClass ) )
72 {
73 return (FileNameMapping) mappings.get( nameOrClass );
74 }
75 else
76 {
77 try
78 {
79 final Class c = Class.forName( nameOrClass );
80 final FileNameMapping fnm = (FileNameMapping) c.newInstance();
81 mappings.put( nameOrClass, fnm );
82 return fnm;
83 }
84 catch ( ClassNotFoundException e )
85 {
86 throw new IllegalStateException(
87 "File name mapping implementation[" + nameOrClass + "] was not found " + e.getMessage() );
88 }
89 catch ( InstantiationException e )
90 {
91 throw new IllegalStateException( "Could not instanciate file name mapping implementation[" +
92 nameOrClass + "] make sure it has a default public constructor" );
93 }
94 catch ( IllegalAccessException e )
95 {
96 throw new IllegalStateException( "Could not access file name mapping implementation[" + nameOrClass +
97 "] make sure it has a default public constructor" );
98 }
99 catch ( ClassCastException e )
100 {
101 throw new IllegalStateException( "Specified class[" + nameOrClass + "] does not implement[" +
102 FileNameMapping.class.getName() + "]" );
103 }
104 }
105 }
106 }