annotate artifact-database/src/main/java/org/dive4elements/artifactdatabase/DefaultServiceFactory.java @ 570:584591f8203c 3.2.x

Upgrade to Log4j 2
author Tom Gottfried <tom@intevation.de>
date Mon, 28 Feb 2022 17:41:14 +0100
parents 415df0fc4fa1
children
rev   line source
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1 /*
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2 * Copyright (c) 2010 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8
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9 package org.dive4elements.artifactdatabase;
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11 import org.dive4elements.artifacts.common.utils.Config;
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12
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13 import org.dive4elements.artifacts.Service;
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14 import org.dive4elements.artifacts.GlobalContext;
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15 import org.dive4elements.artifacts.ServiceFactory;
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16
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17 import org.apache.logging.log4j.Logger;
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18 import org.apache.logging.log4j.LogManager;
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19
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20 import org.w3c.dom.Document;
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21 import org.w3c.dom.Node;
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22
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23 /**
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24 * Trivial implementation of the ServiceFactory interface.
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25 * Name and an description are configured by the given Node given to
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26 * #setup(Document, Node) via the 'name' and 'description' attributes.
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27 * The name of the class that provides the concrete serice is configured
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28 * by the 'service' attribute.
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29 *
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30 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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31 */
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32 public class DefaultServiceFactory
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33 implements ServiceFactory
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34 {
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35 private static Logger logger =
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36 LogManager.getLogger(DefaultServiceFactory.class);
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38 /**
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39 * XPath to access the name of the service.
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40 */
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41 public static final String XPATH_NAME = "@name";
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42 /**
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43 * XPath to access the description of the service.
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44 */
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45 public static final String XPATH_DESCRIPTION = "@description";
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46 /**
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47 * XPath to access the class name of the service to be build by
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48 * this factory.
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49 */
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50 public static final String XPATH_SERVICE = "@service";
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52 /**
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53 * Default description if no description is given in configuration.
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54 */
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55 public static final String DEFAULT_DESCRIPTION =
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56 "No description available";
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57
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58 /**
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59 * Loaded service class if no class name is given in the configuration.
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60 */
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61 public static final String DEFAULT_SERVICE =
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62 "org.dive4elements.artifactdatabase.DefaultService";
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64 /**
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65 * The name of the service factory.
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66 */
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67 protected String name;
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69 /**
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70 * The description of the service factory.
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71 */
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72 protected String description;
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74 /**
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75 * The loaded class used to build the concrete service.
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76 */
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77 protected Class serviceClass;
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79 /**
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80 * Default constructor.
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81 */
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82 public DefaultServiceFactory() {
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83 }
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84
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85 @Override
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86 public String getName() {
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87 return name;
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88 }
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90 @Override
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91 public String getDescription() {
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92 return description;
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93 }
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95 @Override
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96 public Service createService(GlobalContext globalContext) {
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97 try {
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98 Service service = (Service)serviceClass.newInstance();
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99
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100 service.setup(this, globalContext);
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101
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102 return service;
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103 }
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104 catch (InstantiationException ie) {
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105 logger.error(ie.getLocalizedMessage(), ie);
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106 }
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107 catch (IllegalAccessException iae) {
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108 logger.error(iae.getLocalizedMessage(), iae);
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109 }
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110 catch (ClassCastException cce) {
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111 logger.error(cce.getLocalizedMessage(), cce);
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112 }
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114 return null;
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115 }
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117 @Override
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118 public void setup(Document config, Node factoryNode) {
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119
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120 description = Config.getStringXPath(
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121 factoryNode, XPATH_DESCRIPTION, DEFAULT_DESCRIPTION);
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122
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123 name = Config.getStringXPath(
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124 factoryNode, XPATH_NAME, toString());
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125
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126 String service = Config.getStringXPath(
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127 factoryNode, XPATH_SERVICE, DEFAULT_SERVICE);
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128
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129 try {
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130 serviceClass = Class.forName(service);
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131 }
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132 catch (ClassNotFoundException cnfe) {
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133 logger.error(cnfe.getLocalizedMessage(), cnfe);
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134 }
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135
498bb84334d0 Added base class for services and service factories.
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136 if (serviceClass == null) {
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137 serviceClass = DefaultService.class;
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138 }
498bb84334d0 Added base class for services and service factories.
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139 }
498bb84334d0 Added base class for services and service factories.
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140 }
498bb84334d0 Added base class for services and service factories.
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141 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

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