Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/GNVArtifactBase.java @ 68:d117fd4b82e5

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Chartrendering integrated in Timeseries Transition gnv-artifacts/trunk@53 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Wed, 09 Sep 2009 15:28:18 +0000
parents 5db77e0a8594
children 0035862b0295
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.util.ArrayList;
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7 import java.util.Collection;
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8 import java.util.HashMap;
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9 import java.util.Iterator;
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10 import java.util.Map;
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11
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12 import org.apache.log4j.Logger;
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13 import org.w3c.dom.Document;
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14 import org.w3c.dom.Element;
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15 import org.w3c.dom.Node;
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16 import org.w3c.dom.NodeList;
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17
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18 import de.intevation.artifactdatabase.Config;
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19 import de.intevation.artifactdatabase.DefaultArtifact;
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20 import de.intevation.gnv.artifacts.context.GNVArtifactContext;
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21 import de.intevation.gnv.transition.DefaultInputData;
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22 import de.intevation.gnv.transition.InputData;
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23 import de.intevation.gnv.transition.InputValue;
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24 import de.intevation.gnv.transition.OutputMode;
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25 import de.intevation.gnv.transition.OutputTransition;
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26 import de.intevation.gnv.transition.Transition;
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27 import de.intevation.gnv.transition.TransitionFactory;
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28 import de.intevation.gnv.transition.exception.TransitionException;
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29
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30 /**
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31 * @author Tim Englich <tim.englich@intevation.de>
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32 *
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33 */
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34 public abstract class GNVArtifactBase extends DefaultArtifact {
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35 /**
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36 * the logger, used to log exceptions and additonaly information
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37 */
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38 private static Logger log = Logger.getLogger(GNVArtifactBase.class);
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39 /**
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40 * The UID of this Class
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41 */
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42 private static final long serialVersionUID = -8907096744400741458L;
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43
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44 /**
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45 * The Identifier for the Replacement of the Artifactname
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46 */
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47 public static final String XPATH_IDENTIFIER_REPLACE = "IDENTIFIER";
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48
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49 /**
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50 * The XPATH to the XML-Fragment that should be used for the Configuration
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51 */
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52 public static final String XPATH_ARTIFACT_CONFIGURATION= "/artifact-database/artifacts/artifact[@name='"+XPATH_IDENTIFIER_REPLACE+"']";
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53
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55 /**
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56 * The current Transition
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57 */
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58 protected Transition current = null;
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59
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60 /**
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61 * The Transitions that can be used
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62 */
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63 protected Map<String, Transition> transitions = null;
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64
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65 /**
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66 * The Name of the Artifact
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67 */
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68 protected String name = null;
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69
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70 /**
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71 * Constructor
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72 */
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73 public GNVArtifactBase() {
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74 super();
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75 }
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76
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77 /**
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78 * @see de.intevation.artifactdatabase.DefaultArtifact#advance(org.w3c.dom.Document, java.lang.Object)
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79 */
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80 @Override
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81 public Document advance(Document target, Object context) {
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82 Document result = super.newDocument();
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83 if (this.current != null){
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84 String transitionName = this.readTransitionName(target);
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85 if (this.current.isTransitionReachable(transitionName)){
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86 // 1. Pr�fung ob Transition valide ist
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87 if (this.current.validate()){
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88
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89 try {
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90 Transition nextStep = this.transitions.get(transitionName);
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91 // 2.Ergebnisse Berechnen
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92 this.current.advance();
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93 // 3. Ergebnisse �bergeben
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94 nextStep.setDescibeData(this.current.getDescibeData());
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95 nextStep.putInputData(this.current.getInputData());
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96 // 4. Umschalten auf neue Transistion
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97 this.current = nextStep;
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98 } catch (TransitionException e) {
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99 log.error(e,e);
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100 // TODO: Errormmessage senden.
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101 }
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102
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103 }else{
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104 log.error("Advance nicht m�glich, da die Bedingungen f�r den �bergang " +
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105 "in den neuen Zustand noch nicht gegeben ist.");
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106 // TODO: Errormmessage senden.
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107 }
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108
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109 }else{
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110 log.error("Transitions�bergang wird nicht unterst�tzt.");
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111 // TODO: Errormmessage senden.
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112 }
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113 }else{
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114 log.error("Kein Transitionsschritt aktiviert.");
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115 // TODO: Errormmessage senden.
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116 }
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117 return result;
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118 }
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119
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120 protected String readTransitionName(Document document) {
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121 String returnValue = Config.getStringXPath(document, "action/target/@name");
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122 return returnValue;
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123 }
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124
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125 protected Node getConfigurationFragment(Document document){
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126 log.debug("GNVArtifactBase.getConfigurationFragment");
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127 String xpathQuery = XPATH_ARTIFACT_CONFIGURATION.replaceAll(XPATH_IDENTIFIER_REPLACE, this.name);
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128 log.debug(xpathQuery);
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129 return Config.getNodeXPath(document,xpathQuery);
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130 }
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131
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132 /**
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133 * @see de.intevation.artifactdatabase.DefaultArtifact#feed(org.w3c.dom.Document, java.lang.Object)
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134 */
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135 @Override
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136 public Document feed(Document target, Object context) {
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137 Document result = super.newDocument();
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138 try {
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139 if (this.current != null){
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140 this.current.putInputData(this.parseInputData(target));
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141 // TODO Ergebnisdokument erzeugen.
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142 }
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143 } catch (TransitionException e) {
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144 log.error(e,e);
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145 //TODO: Fehlerdokumenterzeugen.
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146 }
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147 return result;
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148 }
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149
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150 /**
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151 * @see de.intevation.artifactdatabase.DefaultArtifact#setup(java.lang.String, java.lang.Object)
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152 */
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153 @Override
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154 public void setup(String identifier, Object context) {
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155 log.debug("GNVArtifactBase.setup");
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156 super.setup(identifier, context);
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157 if (context instanceof GNVArtifactContext){
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158 GNVArtifactContext gnvContext = (GNVArtifactContext)context;
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159 Document doc = gnvContext.getConfig();
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160 Node artifactNode = this.getConfigurationFragment(doc);
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161 NodeList transitionList = Config.getNodeSetXPath(artifactNode, "transitions/transition");
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162 this.transitions = new HashMap<String, Transition>(transitionList.getLength());
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163 for (int i = 0 ; i < transitionList.getLength(); i++){
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164 Transition tmpTransition = TransitionFactory.getInstance().createTransition(transitionList.item(i));
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165 if (tmpTransition != null){
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166 this.transitions.put(tmpTransition.getID(), tmpTransition);
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167 if (this.current == null){
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168 this.current = tmpTransition;
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169 }
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170 }
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171 }
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172
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173 }
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174 }
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175
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176
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177 protected Document createDescibeOutput(){
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178 log.debug("GNVArtifactBase.createDescibeOutput");
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179 Document document = super.newDocument();
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180 Element rootNode = this.createRootNode(document);
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181 this.createHeader(rootNode, document, "describe");
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182 this.createOutputs(rootNode, document);
54
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183 this.createCurrentState(rootNode, document);
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184 this.createReachableStates(rootNode, document);
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185 this.createModel(rootNode, document);
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186 this.createUserInterface(rootNode, document);
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187
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188 return document;
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189 }
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190
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191 protected Element createRootNode(Document document){
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192 Element rootNode = createElement(document,"result");
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193 document.appendChild(rootNode);
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194 return rootNode;
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195 }
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196
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197 protected void createHeader(Element parent, Document document, String documentType){
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198 Element typeNode = createElement(document,"type");
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199 typeNode.setAttribute("name", documentType);
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200 parent.appendChild(typeNode);
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201
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202 Element uuidNode = createElement(document,"uuid");
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203 uuidNode.setAttribute("value", super.identifier);
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204 parent.appendChild(uuidNode);
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205
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206 Element hashNode = createElement(document,"hash");
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diff changeset
207 hashNode.setAttribute("value", this.hash());
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208 parent.appendChild(hashNode);
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209
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210
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211 }
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diff changeset
212 protected void createReachableStates(Element parent,Document document){
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213 Element stateNode = createElement(document,"reachable-states");
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214 if (this.current != null){
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215 Iterator<String> states = this.current.reachableTransitions().iterator();
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216 while(states.hasNext()){
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217 String value = states.next();
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218 Element currentNode = createElement(document,"state");
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219 currentNode.setAttribute("name", value);
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220 currentNode.setAttribute("description", transitions.get(value).getDescription());
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221 stateNode.appendChild(currentNode);
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222 }
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223 }
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224 parent.appendChild(stateNode);
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225 }
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226
09b4bf848c7b 2009-09-08 Tim Englich <tim.englich@intevation.de>
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diff changeset
227 protected void createCurrentState(Element parent, Document document){
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228 Element stateNode = createElement(document,"state");
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diff changeset
229 stateNode.setAttribute("name", this.current.getID());
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230 stateNode.setAttribute("description", this.current.getDescription());
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231 parent.appendChild(stateNode);
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232 }
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233
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234
09b4bf848c7b 2009-09-08 Tim Englich <tim.englich@intevation.de>
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diff changeset
235 protected void createModel(Element parent, Document document){
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236 Element modelNode = createElement(document,"model");
56
737d8bf63701 Required Inputelements integrated in BAsicArtifact-Descibe-Outputv
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diff changeset
237 if (this.current != null){
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diff changeset
238 Collection<InputValue> inputValues = this.current.getRequiredInputValues();
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239 if (inputValues != null){
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diff changeset
240 Iterator<InputValue> it = inputValues.iterator();
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diff changeset
241 while(it.hasNext()){
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diff changeset
242 InputValue inputValue = it.next();
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243 Element inputNode = createElement(document,"input");
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diff changeset
244 inputNode.setAttribute("name", inputValue.getName());
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diff changeset
245 inputNode.setAttribute("type", inputValue.getType());
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diff changeset
246 modelNode.appendChild(inputNode);
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diff changeset
247 }
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248 }
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249 }
54
09b4bf848c7b 2009-09-08 Tim Englich <tim.englich@intevation.de>
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diff changeset
250 parent.appendChild(modelNode);
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251 }
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252
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diff changeset
253 protected void createUserInterface(Element parent, Document document){
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254 Element uiNode = createElement(document,"ui");
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255
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5f47881f7c97 Implementation of the MIN- / MAX-Value Representation
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diff changeset
256 if (this.current != null){
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diff changeset
257 this.current.describe(document, uiNode);
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diff changeset
258 }
54
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diff changeset
259
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260 parent.appendChild(uiNode);
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261 }
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262
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diff changeset
263 protected void createOutputs(Element parent, Document document){
64
5db77e0a8594 Integrated Output Methods and Interfacsstructure
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diff changeset
264 log.debug("GNVArtifactBase.createOutputs");
54
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265 Element outputsNode = createElement(document,"outputs");
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diff changeset
266 if (this.current instanceof OutputTransition){
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267 Collection<OutputMode> outputModes = ((OutputTransition)this.current).getOutputModes();
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268 if (outputModes != null){
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269 Iterator<OutputMode> it = outputModes.iterator();
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270 while(it.hasNext()){
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271 OutputMode outputMode = it.next();
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272 log.debug("Write Outputnode for "+ outputMode.toString());
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273 Element outputModeNode = createElement(document,"output");
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274 outputModeNode.setAttribute("name", outputMode.getName());
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275 outputModeNode.setAttribute("description", outputMode.getDescription());
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276 outputModeNode.setAttribute("mime-type", outputMode.getMimeType());
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277 outputsNode.appendChild(outputModeNode);
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278 }
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279 }else{
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280 log.warn("No Outputmodes given.");
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281 }
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282 }
54
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283 parent.appendChild(outputsNode);
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284 }
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285
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286 /**
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287 * @param document
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288 * @return
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289 */
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290 private Element createElement(Document document, String name) {
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291 Element node = document.createElementNS(DefaultArtifact.NAMESPACE_URI, name);
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292 node.setPrefix(DefaultArtifact.NAMESPACE_PREFIX);
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293 return node;
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294 }
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295
57
f01592cd6419 Funktionalität Feed initial bereitgestellt.
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296 protected Collection<InputData> parseInputData(Document document){
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297 log.debug("GNVArtifactBase.parseInputData");
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298 Collection<InputData> returnValue = null;
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299
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300 NodeList inputElemets = Config.getNodeSetXPath(document, "action/data/input");
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301 if(inputElemets != null){
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302 returnValue = new ArrayList<InputData>(inputElemets.getLength());
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303 for (int i = 0; i < inputElemets.getLength(); i++){
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304 Node inputDataNode = inputElemets.item(i);
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305 InputData inputData = new DefaultInputData(Config.getStringXPath(inputDataNode,"@name"), Config.getStringXPath(inputDataNode,"@value"));
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306 log.debug(inputData.toString());
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307 returnValue.add(inputData);
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308 }
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309 }
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310 return returnValue;
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311 }
68
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312 /**
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313 * @see de.intevation.artifactdatabase.DefaultArtifact#out(org.w3c.dom.Document, java.lang.Object)
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314 */
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315 public byte[] out(Document format, Object context) {
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316 log.debug("TGNVArtifactBase.out");
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317 try {
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318
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319 if (current != null && current instanceof OutputTransition){
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320 return ((OutputTransition)current).out(this.readOutputType(format));
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321 }
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322 } catch (TransitionException e) {
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323 log.error(e,e);
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324 }
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325 return null;
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326 }
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327
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328 protected String readOutputType(Document document){
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329 String value = Config.getStringXPath(document,"action/out/@name");
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330 return value;
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331 }
52
4d6a82b96059 First Implementation of the GNV-Artifacts
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332 }
http://dive4elements.wald.intevation.org