Mercurial > hg > blitz_stable

annotate src/com/go/trove/util/plugin/PluginFactory.java @ 27:511648fa4d64 Version 2.1

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Version to 2.1
author Dan Creswell <dan.creswell@gmail.com>
date Mon, 04 Jan 2010 13:00:40 +0000
parents 3dc0c5604566
children
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1 /* ====================================================================
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2 * Trove - Copyright (c) 1999-2001 Walt Disney Internet Group
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3 * ====================================================================
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4 * The Tea Software License, Version 1.1
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5 *
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6 * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
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7 *
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions
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10 * are met:
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11 *
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12 * 1. Redistributions of source code must retain the above copyright
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13 * notice, this list of conditions and the following disclaimer.
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14 *
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15 * 2. Redistributions in binary form must reproduce the above copyright
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16 * notice, this list of conditions and the following disclaimer in
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17 * the documentation and/or other materials provided with the
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18 * distribution.
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19 *
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20 * 3. The end-user documentation included with the redistribution,
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21 * if any, must include the following acknowledgment:
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22 * "This product includes software developed by the
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23 * Walt Disney Internet Group (http://opensource.go.com/)."
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24 * Alternately, this acknowledgment may appear in the software itself,
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25 * if and wherever such third-party acknowledgments normally appear.
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26 *
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27 * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
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28 * not be used to endorse or promote products derived from this
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29 * software without prior written permission. For written
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30 * permission, please contact opensource@dig.com.
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31 *
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32 * 5. Products derived from this software may not be called "Tea",
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33 * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
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34 * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
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35 * written permission of the Walt Disney Internet Group.
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36 *
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37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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40 * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS
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41 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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42 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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43 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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44 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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45 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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46 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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47 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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48 * ====================================================================
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49 *
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50 * For more information about Tea, please see http://opensource.go.com/.
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51 */
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52 package com.go.trove.util.plugin;
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53
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54 import com.go.trove.util.PropertyMap;
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55
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56 import java.util.Iterator;
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57 import java.util.Set;
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58
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59 /**
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60 * This class is responsible for creating plugins based from a
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61 * configuration block.
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62 *
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63 * @author Scott Jappinen
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64 * @version <!--$$Revision: 1.1 $-->-<!--$$JustDate:--> 01/03/23 <!-- $-->
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65 */
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66 public class PluginFactory {
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67
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68 private static final String cClassKey = "class";
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69 private static final String cInitKey = "init";
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70 private static final String cPluginsKey = "plugins";
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71
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72 public static final Plugin createPlugin(String name, PluginFactoryConfig config)
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73 throws PluginFactoryException
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74 {
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75 Plugin result;
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76 String className = config.getProperties().getString(cClassKey);
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77 PropertyMap props = config.getProperties().subMap(cInitKey);
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78 try {
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79 Class clazz = Class.forName(className);
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80 result = (Plugin) clazz.newInstance();
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81 PluginConfig pluginConfig = new PluginConfigSupport
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82 (props, config.getLog(), config.getPluginContext(), name);
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83 result.init(pluginConfig);
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84 } catch (PluginException e) {
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85 throw new PluginFactoryException(e);
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86 } catch (ClassNotFoundException e) {
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87 throw new PluginFactoryException(e);
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88 } catch (InstantiationException e) {
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89 throw new PluginFactoryException(e);
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90 } catch (IllegalAccessException e) {
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91 throw new PluginFactoryException(e);
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92 }
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93 return result;
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94 }
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95
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96 public static final Plugin[] createPlugins(PluginFactoryConfig config)
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97 throws PluginFactoryException
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98 {
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99 Plugin[] result;
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100 PropertyMap properties = config.getProperties().subMap(cPluginsKey);
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101 Set keySet = properties.subMapKeySet();
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102 result = new Plugin[keySet.size()];
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103 Iterator iterator = keySet.iterator();
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104 for (int i=0; iterator.hasNext(); i++) {
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105 String name = (String) iterator.next();
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106 PropertyMap initProps = properties.subMap(name);
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107 PluginFactoryConfig conf = new PluginFactoryConfigSupport
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108 (initProps, config.getLog(), config.getPluginContext());
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109 result[i] = createPlugin(name, conf);
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110 }
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111 return result;
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112 }
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113
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114 }
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115