2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with any library licensed under the Apache Software License,
22 * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
23 * (or with modified versions of the above that use the same license as the above),
24 * and distribute linked combinations including the two. You must obey the
25 * GNU General Public License in all respects for all of the code used other than
26 * the above mentioned libraries. If you modify this file, you may extend this
27 * exception to your version of the file, but you are not obligated to do so.
28 * If you do not wish to do so, delete this exception statement from your version.
30 package mircoders.media;
32 import mir.entity.Entity;
33 import mir.storage.Database;
35 import java.util.HashMap;
36 import mircoders.global.*;
37 import mircoders.storage.*;
39 import mircoders.localizer.MirLocalizerExc;
42 * helper class to resolve media handlers using reflection
49 public final class MediaHelper {
50 private static Map nameToMediaHandler = new HashMap();
51 private static String defaultMediaHandler = null;
53 public static void addHandler(String aName, MediaHandler aHandler) {
54 synchronized (nameToMediaHandler) {
55 nameToMediaHandler.put(aName, aHandler);
59 public static MediaHandler getHandler(Entity aMediaType) throws MediaExc, MediaFailure {
60 String handlerName = aMediaType.getFieldValue("classname");
63 return MirGlobal.localizer().media().getHandler(handlerName);
65 catch (MirLocalizerExc e) {
66 throw new MediaFailure(e);
70 public static Database getStorage(Entity mediaType, String aTable) throws MediaExc, MediaFailure {
71 if (aTable.equals("Images"))
72 return DatabaseImages.getInstance();
73 else if (aTable.equals("Audio"))
74 return DatabaseAudio.getInstance();
75 if (aTable.equals("Video"))
76 return DatabaseVideo.getInstance();
77 if (aTable.equals("Other"))
78 return DatabaseOther.getInstance();
80 throw new MediaExc("Unknown database specification: " + aTable);