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 the com.oreilly.servlet library, any library
22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
24 * the above that use the same license as the above), and distribute linked
25 * combinations including the two. You must obey the GNU General Public
26 * License in all respects for all of the code used other than the above
27 * mentioned libraries. If you modify this file, you may extend this exception
28 * to your version of the file, but you are not obligated to do so. If you do
29 * not wish to do so, delete this exception statement from your version.
34 import java.lang.reflect.*;
37 import mir.entity.Entity;
38 import mir.storage.Database;
42 * helper class to resolve media handlers using reflection
48 public final class MediaHelper {
50 static String _classPrefix = "mircoders.media.MediaHandler";
52 public static MirMedia getHandler( Entity mediaType )
53 throws MirMediaException {
55 MirMedia mediaHandler;
56 String handlerName = mediaType.getValue("classname");
58 Class handlerClass = Class.forName(_classPrefix+handlerName);
59 return mediaHandler = (MirMedia)handlerClass.newInstance();
60 } catch (Exception e) {
61 throw new MirMediaException ("getHandler -- error in reflection "
66 public static Database getStorage(Entity mediaType, String classPrefix)
67 throws MirMediaException {
69 Database mediaStorage;
70 String storageName = mediaType.getValue("tablename");
72 Class storageClass = Class.forName(classPrefix+storageName);
73 Method m = storageClass.getMethod("getInstance", null);
74 return mediaStorage = (Database)m.invoke(null, null);
75 } catch (Exception e) {
76 throw new MirMediaException ("getStorage -- error in reflection "