Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/FactoryBootstrap.java @ 79:f69e5b87f05f

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Implementation to export artifacts as xml (applied patch from issue208 by SLT). artifacts/trunk@792 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 16 Mar 2010 16:03:06 +0000
parents 48d1a9a082c2
children d348fe1fd822
rev   line source
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1 package de.intevation.artifactdatabase;
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2
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3 import de.intevation.artifacts.ArtifactContextFactory;
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4 import de.intevation.artifacts.ArtifactFactory;
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5 import de.intevation.artifacts.ServiceFactory;
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6
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7 import java.util.ArrayList;
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8
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9 import org.apache.log4j.Logger;
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11 import org.w3c.dom.Document;
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12 import org.w3c.dom.NodeList;
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14 /**
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15 * Bootstrap facility for the global context and the artifact factories.
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16 *
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17 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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18 */
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19 public class FactoryBootstrap
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20 {
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21 private static Logger logger = Logger.getLogger(FactoryBootstrap.class);
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23 public static final String CONTEXT_FACTORY =
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24 "/artifact-database/factories/context-factory/text()";
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26 public static final String DEFAULT_CONTEXT_FACTORY =
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27 "de.intevation.artifactdatabase.DefaultArtifactContextFactory";
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29 public static final String ARTIFACT_FACTORIES =
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30 "/artifact-database/factories/artifact-factories/artifact-factory";
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32 public static final String SERVICE_FACTORIES =
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33 "/artifact-database/factories/service-factories/service-factory";
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35 public static final String EXPORT_SECRET =
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36 "/artifact-database/export-secret/text()";
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37
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38 public static final String DEFAULT_EXORT_SECRET =
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39 "!!!CHANGE ME! I'M NO SECRET!!!";
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41 protected Object context;
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43 protected ArtifactFactory [] artifactFactories;
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45 protected ServiceFactory [] serviceFactories;
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46
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47 protected byte [] exportSecret;
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50 public FactoryBootstrap() {
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51 }
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53 void buildContext() {
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54 String className = Config.getStringXPath(
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55 CONTEXT_FACTORY, DEFAULT_CONTEXT_FACTORY);
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57 ArtifactContextFactory factory = null;
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59 try {
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60 Class clazz = Class.forName(className);
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61 factory = (ArtifactContextFactory)clazz.newInstance();
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62 }
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63 catch (ClassNotFoundException cnfe) {
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64 logger.error(cnfe.getLocalizedMessage(), cnfe);
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65 }
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66 catch (InstantiationException ie) {
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67 logger.error(ie.getLocalizedMessage(), ie);
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68 }
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69 catch (ClassCastException cce) {
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70 logger.error(cce.getLocalizedMessage(), cce);
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71 }
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72 catch (IllegalAccessException iae) {
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73 logger.error(iae.getLocalizedMessage(), iae);
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74 }
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76 if (factory == null) {
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77 factory = new DefaultArtifactContextFactory();
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78 }
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80 logger.info("Using class '" + factory.getClass().getName()
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81 + "' for context creation.");
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83 context = factory.createArtifactContext(Config.getConfig());
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84 }
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86 protected void loadArtifactFactories() {
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87
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88 logger.info("loading artifact factories");
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90 ArrayList loadedFactories = new ArrayList();
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92 NodeList nodes = Config.getNodeSetXPath(ARTIFACT_FACTORIES);
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93
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94 if (nodes == null) {
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95 logger.warn("No factories found");
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96 }
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98 Document config = Config.getConfig();
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100 for (int i = 0, N = nodes != null ? nodes.getLength() : 0; i < N; ++i) {
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101 String className = nodes.item(i).getTextContent().trim();
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103 ArtifactFactory factory = null;
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104
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105 try {
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106 Class clazz = Class.forName(className);
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107 factory = (ArtifactFactory)clazz.newInstance();
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108 }
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109 catch (ClassNotFoundException cnfe) {
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110 logger.error(cnfe.getLocalizedMessage(), cnfe);
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111 }
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112 catch (InstantiationException ie) {
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113 logger.error(ie.getLocalizedMessage(), ie);
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114 }
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115 catch (ClassCastException cce) {
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116 logger.error(cce.getLocalizedMessage(), cce);
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117 }
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118 catch (IllegalAccessException iae) {
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119 logger.error(iae.getLocalizedMessage(), iae);
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120 }
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121
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122 if (factory != null) {
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123 factory.setup(config, nodes.item(i));
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124 loadedFactories.add(factory);
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125 logger.info("Registering '" + factory.getName() + "' as artifact factory.");
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126 }
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127 }
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128
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129 artifactFactories = (ArtifactFactory [])loadedFactories.toArray(
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130 new ArtifactFactory[loadedFactories.size()]);
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131 }
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132
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133 protected void loadServiceFactories() {
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134
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135 logger.info("loading service factories");
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136
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137 ArrayList loadedFactories = new ArrayList();
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138
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139 NodeList nodes = Config.getNodeSetXPath(SERVICE_FACTORIES);
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140
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141 if (nodes == null) {
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142 logger.warn("No factories found");
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143 }
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144
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145 Document config = Config.getConfig();
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146
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147 for (int i = 0, N = nodes != null ? nodes.getLength() : 0; i < N; ++i) {
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148 String className = nodes.item(i).getTextContent().trim();
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149
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150 ServiceFactory factory = null;
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151
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152 try {
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153 Class clazz = Class.forName(className);
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154 factory = (ServiceFactory)clazz.newInstance();
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155 }
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156 catch (ClassNotFoundException cnfe) {
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157 logger.error(cnfe.getLocalizedMessage(), cnfe);
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158 }
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159 catch (InstantiationException ie) {
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160 logger.error(ie.getLocalizedMessage(), ie);
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161 }
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162 catch (ClassCastException cce) {
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163 logger.error(cce.getLocalizedMessage(), cce);
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164 }
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165 catch (IllegalAccessException iae) {
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166 logger.error(iae.getLocalizedMessage(), iae);
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167 }
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168
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169 if (factory != null) {
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170 factory.setup(config, nodes.item(i));
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171 loadedFactories.add(factory);
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172 logger.info("Registering '" + factory.getName() + "' as service factory.");
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173 }
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174 }
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175
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176 serviceFactories = (ServiceFactory [])loadedFactories.toArray(
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177 new ServiceFactory[loadedFactories.size()]);
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178 }
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179
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180 protected void setupExportSecret() {
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181 String secret = Config.getStringXPath(EXPORT_SECRET);
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182
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183 if (secret == null) {
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184 logger.warn("NO EXPORT SECRET SET! USING INSECURE DEFAULT!");
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185 secret = DEFAULT_EXORT_SECRET;
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186 }
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187
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188 exportSecret = StringUtils.getUTF8Bytes(secret);
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189 }
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190
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191 public void boot() {
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192 setupExportSecret();
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193 buildContext();
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194 loadArtifactFactories();
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195 loadServiceFactories();
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196 }
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197
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198 public ArtifactFactory [] getArtifactFactories() {
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199 return artifactFactories;
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200 }
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201
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202 public ServiceFactory [] getServiceFactories() {
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203 return serviceFactories;
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204 }
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205
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206 public Object getContext() {
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207 return context;
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208 }
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209
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210 public byte [] getExportSecret() {
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211 return exportSecret;
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212 }
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213 }
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214 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org