Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/GNVArtifactBase.java @ 88:1b12021905b9

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Some CodeCleanup done. ExceptionDocument will now be returned gnv-artifacts/trunk@125 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Thu, 24 Sep 2009 10:45:24 +0000
parents 969faa37a11b
children cde042a0a395
rev   line source
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1 /**
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2 *
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3 */
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4 package de.intevation.gnv.artifacts;
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5
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6 import java.io.IOException;
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7 import java.io.OutputStream;
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8 import java.util.ArrayList;
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9 import java.util.Collection;
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10 import java.util.HashMap;
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11 import java.util.Iterator;
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12 import java.util.Map;
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13
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14 import javax.xml.XMLConstants;
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15 import javax.xml.xpath.XPathConstants;
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16
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17 import org.apache.log4j.Logger;
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18 import org.w3c.dom.Document;
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19 import org.w3c.dom.Element;
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20 import org.w3c.dom.Node;
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21 import org.w3c.dom.NodeList;
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22
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23 import de.intevation.artifactdatabase.Config;
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24 import de.intevation.artifactdatabase.DefaultArtifact;
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25 import de.intevation.artifactdatabase.XMLUtils;
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26 import de.intevation.artifacts.ArtifactFactory;
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27 import de.intevation.artifacts.ArtifactNamespaceContext;
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28 import de.intevation.artifacts.CallContext;
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29 import de.intevation.gnv.artifacts.context.GNVArtifactContext;
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30 import de.intevation.gnv.transition.DefaultInputData;
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31 import de.intevation.gnv.transition.InputData;
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32 import de.intevation.gnv.transition.InputValue;
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33 import de.intevation.gnv.transition.OutputMode;
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34 import de.intevation.gnv.transition.OutputTransition;
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35 import de.intevation.gnv.transition.Transition;
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36 import de.intevation.gnv.transition.TransitionFactory;
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37 import de.intevation.gnv.transition.exception.TransitionException;
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38 import de.intevation.gnv.utils.ArtifactXMLUtilities;
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39
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40 /**
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41 * @author Tim Englich <tim.englich@intevation.de>
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42 *
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43 */
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44 public abstract class GNVArtifactBase extends DefaultArtifact {
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45 /**
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46 * the logger, used to log exceptions and additonaly information
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47 */
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48 private static Logger log = Logger.getLogger(GNVArtifactBase.class);
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49 /**
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50 * The UID of this Class
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51 */
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52 private static final long serialVersionUID = -8907096744400741458L;
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53
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54 /**
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55 * The Identifier for the Replacement of the Artifactname
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56 */
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57 public static final String XPATH_IDENTIFIER_REPLACE = "IDENTIFIER";
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58
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59 /**
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60 * The XPATH to the XML-Fragment that should be used for the Configuration
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61 */
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62 public static final String XPATH_ARTIFACT_CONFIGURATION= "/artifact-database/artifacts/artifact[@name='"+XPATH_IDENTIFIER_REPLACE+"']";
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65 /**
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66 * The current Transition
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67 */
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68 protected Transition current = null;
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69
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70 /**
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71 * The Transitions that can be used
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72 */
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73 protected Map<String, Transition> transitions = null;
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74
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75 /**
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76 * The Name of the Artifact
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77 */
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78 protected String name = null;
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79
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80 private ArtifactXMLUtilities xmlUtilities = new ArtifactXMLUtilities();
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81
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82 /**
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83 * Constructor
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84 */
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85 public GNVArtifactBase() {
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86 super();
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87 }
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88
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89 /**
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90 * @see de.intevation.artifactdatabase.DefaultArtifact#advance(org.w3c.dom.Document, de.intevation.artifacts.CallContext)
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91 */
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92 @Override
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93 public Document advance(Document target, CallContext context) {
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94 Document result = XMLUtils.newDocument();
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95 try {
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96 if (this.current != null){
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97 String transitionName = this.readTransitionName(target);
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98 if (this.current.isTransitionReachable(transitionName)){
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99 // 1. Pr�fung ob Transition valide ist
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100 if (this.current.validate()){
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101
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102 try {
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103 Transition nextStep = this.transitions.get(transitionName);
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104 // 2.Ergebnisse Berechnen
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105 this.current.advance();
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106 // 3. Ergebnisse �bergeben
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107 nextStep.setDescibeData(this.current.getDescibeData());
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108 nextStep.putInputData(this.current.getInputData());
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109 // 4. Umschalten auf neue Transistion
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110 this.current = nextStep;
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111 } catch (TransitionException e) {
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112 log.error(e,e);
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113 result = new ArtifactXMLUtilities().createExceptionReport(e.getLocalizedMessage(), XMLUtils.newDocument());
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114 }
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115
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116 }else{
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117 String msg = "Advance nicht m�glich, da die Bedingungen f�r den �bergang " +
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118 "in den neuen Zustand noch nicht gegeben ist.";
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119 log.error(msg);
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120 result = new ArtifactXMLUtilities().createExceptionReport(msg, XMLUtils.newDocument());
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121 }
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122
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123 }else{
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124 String msg = "Transitions�bergang wird nicht unterst�tzt.";
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125 log.error(msg);
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126 result = new ArtifactXMLUtilities().createExceptionReport(msg, XMLUtils.newDocument());
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127 }
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128 }else{
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129 String msg = "Kein Transitionsschritt aktiviert.";
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130 log.error(msg);
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131 result = new ArtifactXMLUtilities().createExceptionReport(msg, XMLUtils.newDocument());
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132 }
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133 } catch (Exception e) {
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134 log.error(e,e);
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135 result = new ArtifactXMLUtilities().createExceptionReport(e.getLocalizedMessage(), XMLUtils.newDocument());
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136 }
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137 return result;
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138 }
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139
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140 protected String readTransitionName(Document document) {
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141 String returnValue = Config.getStringXPath(document, "action/target/@name");
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142 return returnValue;
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143 }
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144
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145 protected Node getConfigurationFragment(Document document){
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146 log.debug("GNVArtifactBase.getConfigurationFragment");
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147 String xpathQuery = XPATH_ARTIFACT_CONFIGURATION.replaceAll(XPATH_IDENTIFIER_REPLACE, this.name);
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148 log.debug(xpathQuery);
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149 return Config.getNodeXPath(document,xpathQuery);
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150 }
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151
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152 /**
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153 * @see de.intevation.artifactdatabase.DefaultArtifact#feed(org.w3c.dom.Document, de.intevation.artifacts.CallContext)
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154 */
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155 @Override
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156 public Document feed(Document target, CallContext context) {
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157 Document result = XMLUtils.newDocument();
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158 try {
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159 if (this.current != null){
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160 this.current.putInputData(this.parseInputData(target));
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161 // TODO Ergebnisdokument erzeugen.
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162 }
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163 } catch (TransitionException e) {
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164 log.error(e,e);
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165 return new ArtifactXMLUtilities().createExceptionReport(e.getLocalizedMessage(), XMLUtils.newDocument());
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166 }
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167 return result;
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168 }
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169
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170 /**
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171 * @see de.intevation.artifactdatabase.DefaultArtifact#setup(java.lang.String, java.lang.Object)
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172 */
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173 @Override
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174 public void setup(String identifier, ArtifactFactory factory, Object context) {
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175 log.debug("GNVArtifactBase.setup");
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176 super.setup(identifier, factory, context);
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177
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178 Object localContext = context;
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179 if (context instanceof CallContext){
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180 localContext = ((CallContext)context).globalContext();
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181
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182 }
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183
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184 if (localContext instanceof GNVArtifactContext){
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185 GNVArtifactContext gnvContext = (GNVArtifactContext)localContext;
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186 Document doc = gnvContext.getConfig();
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187 Node artifactNode = this.getConfigurationFragment(doc);
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188 NodeList transitionList = Config.getNodeSetXPath(artifactNode, "transitions/transition");
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189 this.transitions = new HashMap<String, Transition>(transitionList.getLength());
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190 for (int i = 0 ; i < transitionList.getLength(); i++){
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191 Transition tmpTransition = TransitionFactory.getInstance().createTransition(transitionList.item(i));
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192 if (tmpTransition != null){
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193 this.transitions.put(tmpTransition.getID(), tmpTransition);
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194 if (this.current == null){
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195 this.current = tmpTransition;
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196 }
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197 }
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198 }
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199
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200 }
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201 }
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202
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203
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204 protected Document createDescibeOutput(){
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205 log.debug("GNVArtifactBase.createDescibeOutput");
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206 Document document = XMLUtils.newDocument();
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207 Element rootNode = this.createRootNode(document);
54
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208 this.createHeader(rootNode, document, "describe");
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209 this.createOutputs(rootNode, document);
54
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210 this.createCurrentState(rootNode, document);
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211 this.createReachableStates(rootNode, document);
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212 this.createModel(rootNode, document);
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213 this.createUserInterface(rootNode, document);
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214 return document;
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215 }
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216
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217 protected Element createRootNode(Document document){
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218 Element rootNode = xmlUtilities.createArtifactElement(document,"result");
54
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219 document.appendChild(rootNode);
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220 return rootNode;
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221 }
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222
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223 protected void createHeader(Element parent, Document document, String documentType){
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224 Element typeNode = xmlUtilities.createArtifactElement(document,"type");
54
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225 typeNode.setAttribute("name", documentType);
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226 parent.appendChild(typeNode);
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227
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228 Element uuidNode = xmlUtilities.createArtifactElement(document,"uuid");
54
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229 uuidNode.setAttribute("value", super.identifier);
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230 parent.appendChild(uuidNode);
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diff changeset
231
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diff changeset
232 Element hashNode = xmlUtilities.createArtifactElement(document,"hash");
54
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233 hashNode.setAttribute("value", this.hash());
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234 parent.appendChild(hashNode);
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235
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diff changeset
236
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237 }
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238 protected void createReachableStates(Element parent,Document document){
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diff changeset
239 Element stateNode = xmlUtilities.createArtifactElement(document,"reachable-states");
54
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240 if (this.current != null){
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diff changeset
241 Iterator<String> states = this.current.reachableTransitions().iterator();
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242 while(states.hasNext()){
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243 String value = states.next();
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diff changeset
244 Element currentNode = xmlUtilities.createArtifactElement(document,"state");
54
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245 currentNode.setAttribute("name", value);
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diff changeset
246 log.debug("Reachable State: "+value);
54
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diff changeset
247 currentNode.setAttribute("description", transitions.get(value).getDescription());
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248 stateNode.appendChild(currentNode);
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249 }
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250 }
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251 parent.appendChild(stateNode);
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252 }
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253
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254 protected void createCurrentState(Element parent, Document document){
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diff changeset
255 Element stateNode = xmlUtilities.createArtifactElement(document,"state");
54
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diff changeset
256 stateNode.setAttribute("name", this.current.getID());
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257 stateNode.setAttribute("description", this.current.getDescription());
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258 parent.appendChild(stateNode);
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259 }
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260
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261
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262 protected void createModel(Element parent, Document document){
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263 Element modelNode = xmlUtilities.createArtifactElement(document,"model");
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264 if (this.current != null){
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diff changeset
265 Collection<InputValue> inputValues = this.current.getRequiredInputValues();
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266 if (inputValues != null){
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267 Iterator<InputValue> it = inputValues.iterator();
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268 while(it.hasNext()){
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diff changeset
269 InputValue inputValue = it.next();
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270 Element inputNode = xmlUtilities.createArtifactElement(document,"input");
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diff changeset
271 inputNode.setAttribute("name", inputValue.getName());
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diff changeset
272 inputNode.setAttribute("type", inputValue.getType());
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273 modelNode.appendChild(inputNode);
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274 }
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275 }
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276 }
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277 parent.appendChild(modelNode);
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278 }
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279
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280 protected void createUserInterface(Element parent, Document document){
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281 Element uiNode = xmlUtilities.createArtifactElement(document,"ui");
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282
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283 if (this.current != null){
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284 this.current.describe(document, uiNode);
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285 }
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286
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287 parent.appendChild(uiNode);
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288 }
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289
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290 protected void createOutputs(Element parent, Document document){
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291 log.debug("GNVArtifactBase.createOutputs");
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292 Element outputsNode = xmlUtilities.createArtifactElement(document,"outputs");
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293 if (this.current instanceof OutputTransition){
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294 Collection<OutputMode> outputModes = ((OutputTransition)this.current).getOutputModes();
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295 if (outputModes != null){
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296 Iterator<OutputMode> it = outputModes.iterator();
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297 while(it.hasNext()){
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298 OutputMode outputMode = it.next();
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299 log.debug("Write Outputnode for "+ outputMode.toString());
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300 Element outputModeNode = xmlUtilities.createArtifactElement(document,"output");
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301 outputModeNode.setAttribute("name", outputMode.getName());
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302 outputModeNode.setAttribute("description", outputMode.getDescription());
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303 outputModeNode.setAttribute("mime-type", outputMode.getMimeType());
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304 outputsNode.appendChild(outputModeNode);
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305 }
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306 }else{
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307 log.warn("No Outputmodes given.");
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308 }
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309 }
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310 parent.appendChild(outputsNode);
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311 }
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312
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313
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314 protected Collection<InputData> parseInputData(Document document){
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315 log.debug("GNVArtifactBase.parseInputData");
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316 HashMap<String,InputData> returnValue = null;
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317
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318 log.debug(new ArtifactXMLUtilities().writeDocument2String(document));
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319
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320 NodeList inputElemets = (NodeList)XMLUtils.xpath(document, "/action/data/input",XPathConstants.NODESET, ArtifactNamespaceContext.INSTANCE);//Config.getNodeSetXPath(document, "");
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321 if(inputElemets != null){
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322 returnValue = new HashMap<String,InputData>(inputElemets.getLength());
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323 for (int i = 0; i < inputElemets.getLength(); i++){
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324 Node inputDataNode = inputElemets.item(i);
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325 String name = Config.getStringXPath(inputDataNode,"@name");
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326 String value = Config.getStringXPath(inputDataNode,"@value");
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327
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328 if (returnValue.containsKey(name)){
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329 InputData inputData = returnValue.get(name);
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330 inputData.concartValue(value);
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331 log.debug(inputData.toString());
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332 returnValue.put(name, inputData);
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333 }else{
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334 InputData inputData = new DefaultInputData(name,value);
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335
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336 returnValue.put(name,inputData);
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337 }
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338 }
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339 }
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340 return returnValue.values();
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341 }
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342 /**
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343 * @see de.intevation.artifactdatabase.DefaultArtifact#out(org.w3c.dom.Document, java.lang.Object)
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344 */
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345
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346
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347 /**
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348 * @see de.intevation.artifactdatabase.DefaultArtifact#out(org.w3c.dom.Document, java.io.OutputStream, de.intevation.artifacts.CallContext)
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349 */
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350 @Override
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351 public void out(Document format, OutputStream outputStream, CallContext context)
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352 throws IOException {
68
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353 log.debug("TGNVArtifactBase.out");
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354 try {
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355
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356 if (current != null && current instanceof OutputTransition){
73
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357 ((OutputTransition)current).out(this.readOutputType(format), outputStream);
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358 }
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359 } catch (TransitionException e) {
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360 log.error(e,e);
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361 }
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362 }
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diff changeset
363
68
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364 protected String readOutputType(Document document){
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365 String value = Config.getStringXPath(document,"action/out/@name");
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366 return value;
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367 }
52
4d6a82b96059 First Implementation of the GNV-Artifacts
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parents:
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368 }
http://dive4elements.wald.intevation.org