1 /*
2 * JasperReports - Free Java Reporting Library.
3 * Copyright (C) 2001 - 2019 TIBCO Software Inc. All rights reserved.
4 * http://www.jaspersoft.com
5 *
6 * Unless you have purchased a commercial license agreement from Jaspersoft,
7 * the following license terms apply:
8 *
9 * This program is part of JasperReports.
10 *
11 * JasperReports is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU Lesser General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * JasperReports is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License
22 * along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
23 */
24 package net.sf.jasperreports.extensions;
25
26 import java.util.List;
27
28 /**
29 * An extension registry that contains a list of extensions.
30 *
31 * @param <Type> the extension type
32 *
33 * @author Teodor Danciu (teodord@users.sourceforge.net)
34 */
35 public class ListExtensionRegistry<Type> implements ExtensionsRegistry
36 {
37
38 private final Class<Type> type;
39 private final List<Type> extensions;
40
41 /**
42 * Creates a singleton extension registry.
43 *
44 * @param type the registry type
45 * @param extension the extension object
46 */
47 public ListExtensionRegistry(Class<Type> type, List<Type> extension)
48 {
49 this.type = type;
50 this.extensions = extension;
51 }
52
53 @Override
54 public <T> List<T> getExtensions(Class<T> extensionType)
55 {
56 if (type.equals(extensionType))
57 {
58 return (List<T>) extensions;
59 }
60 return null;
61 }
62
63 }
64