Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/GNVArtifactBase.java @ 70:0035862b0295

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Refactoringwork done because of changes in the artifact-module gnv-artifacts/trunk@60 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Thu, 10 Sep 2009 09:40:49 +0000
parents d117fd4b82e5
children e4ecf3188bdf
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.artifacts.ArtifactFactory;
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21 import de.intevation.artifacts.ArtifactNamespaceContext;
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22 import de.intevation.gnv.artifacts.context.GNVArtifactContext;
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23 import de.intevation.gnv.transition.DefaultInputData;
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24 import de.intevation.gnv.transition.InputData;
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25 import de.intevation.gnv.transition.InputValue;
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26 import de.intevation.gnv.transition.OutputMode;
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27 import de.intevation.gnv.transition.OutputTransition;
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28 import de.intevation.gnv.transition.Transition;
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29 import de.intevation.gnv.transition.TransitionFactory;
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30 import de.intevation.gnv.transition.exception.TransitionException;
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31
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32 /**
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33 * @author Tim Englich <tim.englich@intevation.de>
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34 *
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35 */
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36 public abstract class GNVArtifactBase extends DefaultArtifact {
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37 /**
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38 * the logger, used to log exceptions and additonaly information
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39 */
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40 private static Logger log = Logger.getLogger(GNVArtifactBase.class);
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41 /**
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42 * The UID of this Class
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43 */
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44 private static final long serialVersionUID = -8907096744400741458L;
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45
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46 /**
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47 * The Identifier for the Replacement of the Artifactname
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48 */
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49 public static final String XPATH_IDENTIFIER_REPLACE = "IDENTIFIER";
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50
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51 /**
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52 * The XPATH to the XML-Fragment that should be used for the Configuration
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53 */
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54 public static final String XPATH_ARTIFACT_CONFIGURATION= "/artifact-database/artifacts/artifact[@name='"+XPATH_IDENTIFIER_REPLACE+"']";
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55
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57 /**
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58 * The current Transition
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59 */
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60 protected Transition current = null;
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61
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62 /**
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63 * The Transitions that can be used
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64 */
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65 protected Map<String, Transition> transitions = null;
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66
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67 /**
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68 * The Name of the Artifact
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69 */
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70 protected String name = null;
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71
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72 /**
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73 * Constructor
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74 */
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75 public GNVArtifactBase() {
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76 super();
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77 }
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78
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79 /**
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80 * @see de.intevation.artifactdatabase.DefaultArtifact#advance(org.w3c.dom.Document, java.lang.Object)
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81 */
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82 @Override
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83 public Document advance(Document target, Object context) {
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84 Document result = super.newDocument();
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85 if (this.current != null){
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86 String transitionName = this.readTransitionName(target);
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87 if (this.current.isTransitionReachable(transitionName)){
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88 // 1. Pr�fung ob Transition valide ist
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89 if (this.current.validate()){
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90
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91 try {
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92 Transition nextStep = this.transitions.get(transitionName);
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93 // 2.Ergebnisse Berechnen
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94 this.current.advance();
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95 // 3. Ergebnisse �bergeben
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96 nextStep.setDescibeData(this.current.getDescibeData());
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97 nextStep.putInputData(this.current.getInputData());
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98 // 4. Umschalten auf neue Transistion
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99 this.current = nextStep;
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100 } catch (TransitionException e) {
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101 log.error(e,e);
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102 // TODO: Errormmessage senden.
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103 }
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104
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105 }else{
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106 log.error("Advance nicht m�glich, da die Bedingungen f�r den �bergang " +
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107 "in den neuen Zustand noch nicht gegeben ist.");
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108 // TODO: Errormmessage senden.
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109 }
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110
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111 }else{
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112 log.error("Transitions�bergang wird nicht unterst�tzt.");
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113 // TODO: Errormmessage senden.
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114 }
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115 }else{
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116 log.error("Kein Transitionsschritt aktiviert.");
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117 // TODO: Errormmessage senden.
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118 }
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119 return result;
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120 }
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121
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122 protected String readTransitionName(Document document) {
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123 String returnValue = Config.getStringXPath(document, "action/target/@name");
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124 return returnValue;
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125 }
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126
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127 protected Node getConfigurationFragment(Document document){
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128 log.debug("GNVArtifactBase.getConfigurationFragment");
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129 String xpathQuery = XPATH_ARTIFACT_CONFIGURATION.replaceAll(XPATH_IDENTIFIER_REPLACE, this.name);
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130 log.debug(xpathQuery);
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131 return Config.getNodeXPath(document,xpathQuery);
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132 }
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133
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134 /**
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135 * @see de.intevation.artifactdatabase.DefaultArtifact#feed(org.w3c.dom.Document, java.lang.Object)
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136 */
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137 @Override
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138 public Document feed(Document target, Object context) {
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139 Document result = super.newDocument();
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140 try {
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141 if (this.current != null){
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142 this.current.putInputData(this.parseInputData(target));
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143 // TODO Ergebnisdokument erzeugen.
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144 }
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145 } catch (TransitionException e) {
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146 log.error(e,e);
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147 //TODO: Fehlerdokumenterzeugen.
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148 }
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149 return result;
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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#setup(java.lang.String, java.lang.Object)
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154 */
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155 @Override
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156 public void setup(String identifier, ArtifactFactory factory, Object context) {
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157 log.debug("GNVArtifactBase.setup");
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158 super.setup(identifier, factory, context);
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159 if (context instanceof GNVArtifactContext){
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160 GNVArtifactContext gnvContext = (GNVArtifactContext)context;
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161 Document doc = gnvContext.getConfig();
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162 Node artifactNode = this.getConfigurationFragment(doc);
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163 NodeList transitionList = Config.getNodeSetXPath(artifactNode, "transitions/transition");
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164 this.transitions = new HashMap<String, Transition>(transitionList.getLength());
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165 for (int i = 0 ; i < transitionList.getLength(); i++){
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166 Transition tmpTransition = TransitionFactory.getInstance().createTransition(transitionList.item(i));
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167 if (tmpTransition != null){
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168 this.transitions.put(tmpTransition.getID(), tmpTransition);
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169 if (this.current == null){
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170 this.current = tmpTransition;
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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
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178
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179 protected Document createDescibeOutput(){
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180 log.debug("GNVArtifactBase.createDescibeOutput");
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181 Document document = super.newDocument();
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182 Element rootNode = this.createRootNode(document);
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183 this.createHeader(rootNode, document, "describe");
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184 this.createOutputs(rootNode, document);
54
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185 this.createCurrentState(rootNode, document);
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186 this.createReachableStates(rootNode, document);
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187 this.createModel(rootNode, document);
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188 this.createUserInterface(rootNode, document);
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189
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190 return document;
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191 }
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192
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193 protected Element createRootNode(Document document){
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194 Element rootNode = createElement(document,"result");
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195 document.appendChild(rootNode);
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196 return rootNode;
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197 }
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198
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199 protected void createHeader(Element parent, Document document, String documentType){
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200 Element typeNode = createElement(document,"type");
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201 typeNode.setAttribute("name", documentType);
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202 parent.appendChild(typeNode);
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203
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204 Element uuidNode = createElement(document,"uuid");
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205 uuidNode.setAttribute("value", super.identifier);
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206 parent.appendChild(uuidNode);
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207
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diff changeset
208 Element hashNode = createElement(document,"hash");
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diff changeset
209 hashNode.setAttribute("value", this.hash());
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210 parent.appendChild(hashNode);
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211
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diff changeset
212
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213 }
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diff changeset
214 protected void createReachableStates(Element parent,Document document){
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diff changeset
215 Element stateNode = createElement(document,"reachable-states");
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216 if (this.current != null){
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217 Iterator<String> states = this.current.reachableTransitions().iterator();
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218 while(states.hasNext()){
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219 String value = states.next();
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220 Element currentNode = createElement(document,"state");
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221 currentNode.setAttribute("name", value);
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222 currentNode.setAttribute("description", transitions.get(value).getDescription());
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223 stateNode.appendChild(currentNode);
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224 }
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225 }
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226 parent.appendChild(stateNode);
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227 }
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228
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229 protected void createCurrentState(Element parent, Document document){
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diff changeset
230 Element stateNode = createElement(document,"state");
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diff changeset
231 stateNode.setAttribute("name", this.current.getID());
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232 stateNode.setAttribute("description", this.current.getDescription());
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233 parent.appendChild(stateNode);
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234 }
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235
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236
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diff changeset
237 protected void createModel(Element parent, Document document){
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238 Element modelNode = createElement(document,"model");
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737d8bf63701 Required Inputelements integrated in BAsicArtifact-Descibe-Outputv
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diff changeset
239 if (this.current != null){
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diff changeset
240 Collection<InputValue> inputValues = this.current.getRequiredInputValues();
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241 if (inputValues != null){
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diff changeset
242 Iterator<InputValue> it = inputValues.iterator();
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243 while(it.hasNext()){
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diff changeset
244 InputValue inputValue = it.next();
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245 Element inputNode = createElement(document,"input");
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diff changeset
246 inputNode.setAttribute("name", inputValue.getName());
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diff changeset
247 inputNode.setAttribute("type", inputValue.getType());
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diff changeset
248 modelNode.appendChild(inputNode);
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diff changeset
249 }
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250 }
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diff changeset
251 }
54
09b4bf848c7b 2009-09-08 Tim Englich <tim.englich@intevation.de>
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diff changeset
252 parent.appendChild(modelNode);
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253 }
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254
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diff changeset
255 protected void createUserInterface(Element parent, Document document){
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diff changeset
256 Element uiNode = createElement(document,"ui");
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257
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5f47881f7c97 Implementation of the MIN- / MAX-Value Representation
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258 if (this.current != null){
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diff changeset
259 this.current.describe(document, uiNode);
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diff changeset
260 }
54
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261
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262 parent.appendChild(uiNode);
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263 }
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264
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265 protected void createOutputs(Element parent, Document document){
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5db77e0a8594 Integrated Output Methods and Interfacsstructure
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diff changeset
266 log.debug("GNVArtifactBase.createOutputs");
54
09b4bf848c7b 2009-09-08 Tim Englich <tim.englich@intevation.de>
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267 Element outputsNode = createElement(document,"outputs");
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diff changeset
268 if (this.current instanceof OutputTransition){
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269 Collection<OutputMode> outputModes = ((OutputTransition)this.current).getOutputModes();
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270 if (outputModes != null){
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271 Iterator<OutputMode> it = outputModes.iterator();
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272 while(it.hasNext()){
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273 OutputMode outputMode = it.next();
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274 log.debug("Write Outputnode for "+ outputMode.toString());
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275 Element outputModeNode = createElement(document,"output");
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276 outputModeNode.setAttribute("name", outputMode.getName());
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277 outputModeNode.setAttribute("description", outputMode.getDescription());
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278 outputModeNode.setAttribute("mime-type", outputMode.getMimeType());
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279 outputsNode.appendChild(outputModeNode);
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280 }
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281 }else{
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282 log.warn("No Outputmodes given.");
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283 }
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284 }
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285 parent.appendChild(outputsNode);
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286 }
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287
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288 /**
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289 * @param document
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290 * @return
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291 */
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292 private Element createElement(Document document, String name) {
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293 Element node = document.createElementNS(ArtifactNamespaceContext.NAMESPACE_URI, name);
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294 node.setPrefix(ArtifactNamespaceContext.NAMESPACE_PREFIX);
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295 return node;
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296 }
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297
57
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298 protected Collection<InputData> parseInputData(Document document){
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299 log.debug("GNVArtifactBase.parseInputData");
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300 Collection<InputData> returnValue = null;
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301
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302 NodeList inputElemets = Config.getNodeSetXPath(document, "action/data/input");
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303 if(inputElemets != null){
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304 returnValue = new ArrayList<InputData>(inputElemets.getLength());
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305 for (int i = 0; i < inputElemets.getLength(); i++){
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306 Node inputDataNode = inputElemets.item(i);
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307 InputData inputData = new DefaultInputData(Config.getStringXPath(inputDataNode,"@name"), Config.getStringXPath(inputDataNode,"@value"));
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308 log.debug(inputData.toString());
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309 returnValue.add(inputData);
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310 }
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311 }
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312 return returnValue;
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313 }
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314 /**
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315 * @see de.intevation.artifactdatabase.DefaultArtifact#out(org.w3c.dom.Document, java.lang.Object)
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316 */
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317 public byte[] out(Document format, Object context) {
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318 log.debug("TGNVArtifactBase.out");
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319 try {
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320
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321 if (current != null && current instanceof OutputTransition){
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322 return ((OutputTransition)current).out(this.readOutputType(format));
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323 }
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324 } catch (TransitionException e) {
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325 log.error(e,e);
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326 }
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327 return null;
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328 }
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329
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330 protected String readOutputType(Document document){
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331 String value = Config.getStringXPath(document,"action/out/@name");
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332 return value;
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333 }
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334 }
http://dive4elements.wald.intevation.org