1 /**
2 * This file Copyright (c) 2011 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.objectfactory.guice;
35
36 import javax.inject.Inject;
37 import javax.inject.Provider;
38
39 import info.magnolia.objectfactory.ComponentProvider;
40 import info.magnolia.objectfactory.ObservedComponentFactory;
41
42
43 /**
44 * Guice provider that creates an object by reading it from the repository and by using observation updates the
45 * object if the repository changes.
46 *
47 * @param <T> type of the instance the provider provides
48 * @version $Id$
49 */
50 public class GuiceObservedComponentProvider<T> implements Provider<T> {
51
52 @Inject
53 private ComponentProvider componentProvider;
54 private final String workspace;
55 private final String path;
56 private final Class<T> type;
57
58 public GuiceObservedComponentProvider(String workspace, String path, Class<T> type) {
59 this.workspace = workspace;
60 this.path = path;
61 this.type = type;
62 }
63
64 @Override
65 public synchronized T get() {
66 ObservedComponentFactory<T> observedComponentFactory = new ObservedComponentFactory<T>(workspace, path, type, componentProvider);
67 return observedComponentFactory.newInstance();
68 }
69 }