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comparison src/com/go/trove/util/plugin/PluginFactory.java @ 0:3dc0c5604566

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Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
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1 /* ====================================================================
2 * Trove - Copyright (c) 1999-2001 Walt Disney Internet Group
3 * ====================================================================
4 * The Tea Software License, Version 1.1
5 *
6 * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. The end-user documentation included with the redistribution,
21 * if any, must include the following acknowledgment:
22 * "This product includes software developed by the
23 * Walt Disney Internet Group (http://opensource.go.com/)."
24 * Alternately, this acknowledgment may appear in the software itself,
25 * if and wherever such third-party acknowledgments normally appear.
26 *
27 * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
28 * not be used to endorse or promote products derived from this
29 * software without prior written permission. For written
30 * permission, please contact opensource@dig.com.
31 *
32 * 5. Products derived from this software may not be called "Tea",
33 * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
34 * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
35 * written permission of the Walt Disney Internet Group.
36 *
37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40 * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS
41 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
42 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
43 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
44 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
45 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
46 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
47 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * For more information about Tea, please see http://opensource.go.com/.
51 */
52 package com.go.trove.util.plugin;
53
54 import com.go.trove.util.PropertyMap;
55
56 import java.util.Iterator;
57 import java.util.Set;
58
59 /**
60 * This class is responsible for creating plugins based from a
61 * configuration block.
62 *
63 * @author Scott Jappinen
64 * @version <!--$$Revision: 1.1 $-->-<!--$$JustDate:--> 01/03/23 <!-- $-->
65 */
66 public class PluginFactory {
67
68 private static final String cClassKey = "class";
69 private static final String cInitKey = "init";
70 private static final String cPluginsKey = "plugins";
71
72 public static final Plugin createPlugin(String name, PluginFactoryConfig config)
73 throws PluginFactoryException
74 {
75 Plugin result;
76 String className = config.getProperties().getString(cClassKey);
77 PropertyMap props = config.getProperties().subMap(cInitKey);
78 try {
79 Class clazz = Class.forName(className);
80 result = (Plugin) clazz.newInstance();
81 PluginConfig pluginConfig = new PluginConfigSupport
82 (props, config.getLog(), config.getPluginContext(), name);
83 result.init(pluginConfig);
84 } catch (PluginException e) {
85 throw new PluginFactoryException(e);
86 } catch (ClassNotFoundException e) {
87 throw new PluginFactoryException(e);
88 } catch (InstantiationException e) {
89 throw new PluginFactoryException(e);
90 } catch (IllegalAccessException e) {
91 throw new PluginFactoryException(e);
92 }
93 return result;
94 }
95
96 public static final Plugin[] createPlugins(PluginFactoryConfig config)
97 throws PluginFactoryException
98 {
99 Plugin[] result;
100 PropertyMap properties = config.getProperties().subMap(cPluginsKey);
101 Set keySet = properties.subMapKeySet();
102 result = new Plugin[keySet.size()];
103 Iterator iterator = keySet.iterator();
104 for (int i=0; iterator.hasNext(); i++) {
105 String name = (String) iterator.next();
106 PropertyMap initProps = properties.subMap(name);
107 PluginFactoryConfig conf = new PluginFactoryConfigSupport
108 (initProps, config.getLog(), config.getPluginContext());
109 result[i] = createPlugin(name, conf);
110 }
111 return result;
112 }
113
114 }
115