1 package org.apache.maven.plugins.assembly.io;
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.ArrayList;
23 import java.util.Iterator;
24 import java.util.List;
25
26 /**
27 * The Locator.
28 *
29 */
30 final class Locator
31 {
32
33 private List<LocatorStrategy> strategies;
34 private final MessageHolder messageHolder;
35
36 /**
37 * @param strategies List of strategies
38 * @param messageHolder {@link MessageHolder}
39 */
40 Locator( List<LocatorStrategy> strategies, MessageHolder messageHolder )
41 {
42 this.messageHolder = messageHolder;
43 this.strategies = new ArrayList<LocatorStrategy>( strategies );
44 }
45
46 /**
47 * Create instance.
48 */
49 Locator()
50 {
51 this.messageHolder = new DefaultMessageHolder();
52 this.strategies = new ArrayList<LocatorStrategy>();
53 }
54
55 /**
56 * @return {@link MessageHolder}
57 */
58 MessageHolder getMessageHolder()
59 {
60 return messageHolder;
61 }
62
63 /**
64 * @param strategy The strategy to be added.
65 */
66 void addStrategy( LocatorStrategy strategy )
67 {
68 this.strategies.add( strategy );
69 }
70
71 /**
72 * @param strategy the strategy to remove.
73 */
74 void removeStrategy( LocatorStrategy strategy )
75 {
76 this.strategies.remove( strategy );
77 }
78
79 /**
80 * @param strategies the strategies to be set.
81 */
82 void setStrategies( List<LocatorStrategy> strategies )
83 {
84 this.strategies.clear();
85 this.strategies.addAll( strategies );
86 }
87
88 /**
89 * @return list of strategies.
90 */
91 List<LocatorStrategy> getStrategies()
92 {
93 return strategies;
94 }
95
96 /**
97 * @param locationSpecification location spec
98 * @return {@link Location}
99 */
100 Location resolve( String locationSpecification )
101 {
102 Location location = null;
103
104 for ( Iterator<LocatorStrategy> it = strategies.iterator(); location == null && it.hasNext(); )
105 {
106 LocatorStrategy strategy = (LocatorStrategy) it.next();
107
108 location = strategy.resolve( locationSpecification, messageHolder );
109 }
110
111 return location;
112 }
113
114 }