01: /*
02: * This file is part of "SnipSnap Radeox Rendering Engine".
03: *
04: * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
05: * All Rights Reserved.
06: *
07: * Please visit http://radeox.org/ for updates and contact.
08: *
09: * --LICENSE NOTICE--
10: * Licensed under the Apache License, Version 2.0 (the "License");
11: * you may not use this file except in compliance with the License.
12: * You may obtain a copy of the License at
13: *
14: * http://www.apache.org/licenses/LICENSE-2.0
15: *
16: * Unless required by applicable law or agreed to in writing, software
17: * distributed under the License is distributed on an "AS IS" BASIS,
18: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19: * See the License for the specific language governing permissions and
20: * limitations under the License.
21: * --LICENSE NOTICE--
22: */
23:
24: package org.radeox.macro.table;
25:
26: import org.apache.commons.logging.Log;
27: import org.apache.commons.logging.LogFactory;
28: import org.radeox.macro.PluginLoader;
29: import org.radeox.macro.Repository;
30:
31: /**
32: * Plugin loader for table functions
33: *
34: * @author Stephan J. Schmidt
35: * @version $Id: FunctionLoader.java 7707 2006-04-12 17:30:19Z
36: * ian@caret.cam.ac.uk $
37: */
38:
39: public class FunctionLoader extends PluginLoader {
40: private static Log log = LogFactory.getLog(FunctionLoader.class);
41:
42: protected static FunctionLoader instance;
43:
44: public static synchronized PluginLoader getInstance() {
45: if (null == instance) {
46: instance = new FunctionLoader();
47: }
48: return instance;
49: }
50:
51: public Class getLoadClass() {
52: return Function.class;
53: }
54:
55: /**
56: * Add a plugin to the known plugin map
57: *
58: * @param plugin
59: * Function to add
60: */
61: public void add(Repository repository, Object plugin) {
62: if (plugin instanceof Function) {
63: repository.put(((Function) plugin).getName().toLowerCase(),
64: plugin);
65: } else {
66: log.debug("FunctionLoader: " + plugin.getClass()
67: + " not of Type " + getLoadClass());
68: }
69: }
70:
71: }
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