annotate gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/GNVArtifactBase.java @ 90:6bdef6e590d6

Added CSV-Support and do some performanceimprovments gnv-artifacts/trunk@132 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Thu, 24 Sep 2009 15:27:33 +0000
parents cde042a0a395
children bd284d8306db
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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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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63
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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 log.debug("GNVArtifactBase.advance");
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95 Document result = XMLUtils.newDocument();
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96 try {
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97 if (this.current != null){
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98 String transitionName = this.readTransitionName(target);
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99 if (this.current.isTransitionReachable(transitionName)){
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100 // 1. Pr�fung ob Transition valide ist
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101 if (this.current.validate()){
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102
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103 try {
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104 Transition nextStep = this.transitions.get(transitionName);
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105 // 2.Ergebnisse Berechnen
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106 this.current.advance();
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107 // 3. Ergebnisse �bergeben
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108 nextStep.setDescibeData(this.current.getDescibeData());
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109 nextStep.putInputData(this.current.getInputData());
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110 // 4. Umschalten auf neue Transistion
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111 this.current = nextStep;
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112 result = new ArtifactXMLUtilities().createSuccessReport("Advance success", XMLUtils.newDocument());
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113 } catch (TransitionException e) {
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114 log.error(e,e);
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115 result = new ArtifactXMLUtilities().createExceptionReport(e.getLocalizedMessage(), XMLUtils.newDocument());
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116 }
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117
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118 }else{
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119 String msg = "Advance nicht m�glich, da die Bedingungen f�r den �bergang " +
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120 "in den neuen Zustand noch nicht gegeben ist.";
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121 log.error(msg);
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122 result = new ArtifactXMLUtilities().createExceptionReport(msg, XMLUtils.newDocument());
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123 }
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124
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125 }else{
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126 String msg = "Transitions�bergang wird nicht unterst�tzt.";
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127 log.error(msg);
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128 result = new ArtifactXMLUtilities().createExceptionReport(msg, XMLUtils.newDocument());
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129 }
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130 }else{
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131 String msg = "Kein Transitionsschritt aktiviert.";
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132 log.error(msg);
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133 result = new ArtifactXMLUtilities().createExceptionReport(msg, XMLUtils.newDocument());
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134 }
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135 } catch (Exception e) {
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136 log.error(e,e);
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137 result = new ArtifactXMLUtilities().createExceptionReport(e.getLocalizedMessage(), XMLUtils.newDocument());
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138 }
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139 return result;
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140 }
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141
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142 protected String readTransitionName(Document document) {
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143 String returnValue = Config.getStringXPath(document, "action/target/@name");
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144 return returnValue;
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145 }
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146
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147 protected Node getConfigurationFragment(Document document){
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148 log.debug("GNVArtifactBase.getConfigurationFragment");
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149 String xpathQuery = XPATH_ARTIFACT_CONFIGURATION.replaceAll(XPATH_IDENTIFIER_REPLACE, this.name);
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150 log.debug(xpathQuery);
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151 return Config.getNodeXPath(document,xpathQuery);
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152 }
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153
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154 /**
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155 * @see de.intevation.artifactdatabase.DefaultArtifact#feed(org.w3c.dom.Document, de.intevation.artifacts.CallContext)
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156 */
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157 @Override
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158 public Document feed(Document target, CallContext context) {
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159 log.debug("GNVArtifactBase.feed");
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160 Document result = XMLUtils.newDocument();
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161 try {
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162 if (this.current != null){
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163 this.current.putInputData(this.parseInputData(target));
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164 result = new ArtifactXMLUtilities().createSuccessReport("Feed success", XMLUtils.newDocument());
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165 }else{
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166 String msg = "No Transition instantiated";
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167 log.warn(msg);
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168 result = new ArtifactXMLUtilities().createExceptionReport(msg, XMLUtils.newDocument());
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169 }
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170 } catch (TransitionException e) {
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171 log.error(e,e);
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172 result = new ArtifactXMLUtilities().createExceptionReport(e.getLocalizedMessage(), XMLUtils.newDocument());
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173 }
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174 return result;
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175 }
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176
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177 /**
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178 * @see de.intevation.artifactdatabase.DefaultArtifact#setup(java.lang.String, java.lang.Object)
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179 */
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180 @Override
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181 public void setup(String identifier, ArtifactFactory factory, Object context) {
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182 log.debug("GNVArtifactBase.setup");
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183 super.setup(identifier, factory, context);
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184
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185 Object localContext = context;
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186 if (context instanceof CallContext){
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187 localContext = ((CallContext)context).globalContext();
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188
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189 }
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190
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191 if (localContext instanceof GNVArtifactContext){
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192 GNVArtifactContext gnvContext = (GNVArtifactContext)localContext;
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193 Document doc = gnvContext.getConfig();
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194 Node artifactNode = this.getConfigurationFragment(doc);
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195 NodeList transitionList = Config.getNodeSetXPath(artifactNode, "transitions/transition");
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196 this.transitions = new HashMap<String, Transition>(transitionList.getLength());
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197 for (int i = 0 ; i < transitionList.getLength(); i++){
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198 Transition tmpTransition = TransitionFactory.getInstance().createTransition(transitionList.item(i));
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199 if (tmpTransition != null){
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200 this.transitions.put(tmpTransition.getID(), tmpTransition);
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201 if (this.current == null){
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202 this.current = tmpTransition;
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203 }
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204 }
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205 }
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206
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207 }
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208 }
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209
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210
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211 protected Document createDescibeOutput(){
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212 log.debug("GNVArtifactBase.createDescibeOutput");
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213 Document document = XMLUtils.newDocument();
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214 Element rootNode = this.createRootNode(document);
54
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215 this.createHeader(rootNode, document, "describe");
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216 this.createOutputs(rootNode, document);
54
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217 this.createCurrentState(rootNode, document);
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218 this.createReachableStates(rootNode, document);
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219 this.createModel(rootNode, document);
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220 this.createUserInterface(rootNode, document);
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221 return document;
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222 }
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223
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224 protected Element createRootNode(Document document){
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225 Element rootNode = xmlUtilities.createArtifactElement(document,"result");
54
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226 document.appendChild(rootNode);
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227 return rootNode;
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228 }
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229
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230 protected void createHeader(Element parent, Document document, String documentType){
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231 Element typeNode = xmlUtilities.createArtifactElement(document,"type");
54
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232 typeNode.setAttribute("name", documentType);
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233 parent.appendChild(typeNode);
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234
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235 Element uuidNode = xmlUtilities.createArtifactElement(document,"uuid");
54
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236 uuidNode.setAttribute("value", super.identifier);
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237 parent.appendChild(uuidNode);
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238
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239 Element hashNode = xmlUtilities.createArtifactElement(document,"hash");
54
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240 hashNode.setAttribute("value", this.hash());
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241 parent.appendChild(hashNode);
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242 }
54
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243
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244 protected void createReachableStates(Element parent,Document document){
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245 Element stateNode = xmlUtilities.createArtifactElement(document,"reachable-states");
54
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246 if (this.current != null){
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247 Iterator<String> states = this.current.reachableTransitions().iterator();
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248 while(states.hasNext()){
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249 String value = states.next();
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250 Element currentNode = xmlUtilities.createArtifactElement(document,"state");
54
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diff changeset
251 currentNode.setAttribute("name", value);
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252 log.debug("Reachable State: "+value);
54
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253 currentNode.setAttribute("description", transitions.get(value).getDescription());
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254 stateNode.appendChild(currentNode);
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255 }
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256 }
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257 parent.appendChild(stateNode);
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258 }
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259
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260 protected void createCurrentState(Element parent, Document document){
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diff changeset
261 Element stateNode = xmlUtilities.createArtifactElement(document,"state");
54
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262 stateNode.setAttribute("name", this.current.getID());
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263 stateNode.setAttribute("description", this.current.getDescription());
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diff changeset
264 parent.appendChild(stateNode);
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265 }
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266
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267
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268 protected void createModel(Element parent, Document document){
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269 Element modelNode = xmlUtilities.createArtifactElement(document,"model");
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270 if (this.current != null){
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271 Collection<InputValue> inputValues = this.current.getRequiredInputValues();
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272 if (inputValues != null){
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273 Iterator<InputValue> it = inputValues.iterator();
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274 while(it.hasNext()){
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275 InputValue inputValue = it.next();
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276 Element inputNode = xmlUtilities.createArtifactElement(document,"input");
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277 inputNode.setAttribute("name", inputValue.getName());
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278 inputNode.setAttribute("type", inputValue.getType());
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279 modelNode.appendChild(inputNode);
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280 }
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281 }
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282 }
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283 parent.appendChild(modelNode);
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284 }
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285
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286 protected void createUserInterface(Element parent, Document document){
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287 Element uiNode = xmlUtilities.createArtifactElement(document,"ui");
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288
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289 if (this.current != null){
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290 this.current.describe(document, uiNode);
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291 }
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292
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293 parent.appendChild(uiNode);
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294 }
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295
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296 protected void createOutputs(Element parent, Document document){
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297 log.debug("GNVArtifactBase.createOutputs");
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298 Element outputsNode = xmlUtilities.createArtifactElement(document,"outputs");
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299 if (this.current instanceof OutputTransition){
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300 Collection<OutputMode> outputModes = ((OutputTransition)this.current).getOutputModes();
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301 if (outputModes != null){
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302 Iterator<OutputMode> it = outputModes.iterator();
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303 while(it.hasNext()){
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304 OutputMode outputMode = it.next();
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305 log.debug("Write Outputnode for "+ outputMode.toString());
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306 Element outputModeNode = xmlUtilities.createArtifactElement(document,"output");
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307 outputModeNode.setAttribute("name", outputMode.getName());
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308 outputModeNode.setAttribute("description", outputMode.getDescription());
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309 outputModeNode.setAttribute("mime-type", outputMode.getMimeType());
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310 outputsNode.appendChild(outputModeNode);
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311 }
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312 }else{
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313 log.warn("No Outputmodes given.");
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314 }
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315 }
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316 parent.appendChild(outputsNode);
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317 }
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318
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319
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320 protected Collection<InputData> parseInputData(Document document){
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321 log.debug("GNVArtifactBase.parseInputData");
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322 HashMap<String,InputData> returnValue = null;
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323
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324 log.debug(new ArtifactXMLUtilities().writeDocument2String(document));
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325
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326 NodeList inputElemets = (NodeList)XMLUtils.xpath(document, "/action/data/input",XPathConstants.NODESET, ArtifactNamespaceContext.INSTANCE);//Config.getNodeSetXPath(document, "");
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327 if(inputElemets != null){
78
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328 returnValue = new HashMap<String,InputData>(inputElemets.getLength());
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329 for (int i = 0; i < inputElemets.getLength(); i++){
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330 Node inputDataNode = inputElemets.item(i);
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331 String name = Config.getStringXPath(inputDataNode,"@name");
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332 String value = Config.getStringXPath(inputDataNode,"@value");
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333
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334 if (returnValue.containsKey(name)){
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335 InputData inputData = returnValue.get(name);
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336 inputData.concartValue(value);
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337 log.debug(inputData.toString());
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338 returnValue.put(name, inputData);
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339 }else{
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340 InputData inputData = new DefaultInputData(name,value);
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341
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342 returnValue.put(name,inputData);
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343 }
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344 }
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345 }
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346 return returnValue.values();
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347 }
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348 /**
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349 * @see de.intevation.artifactdatabase.DefaultArtifact#out(org.w3c.dom.Document, java.lang.Object)
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350 */
73
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351
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352
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353 /**
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354 * @see de.intevation.artifactdatabase.DefaultArtifact#out(org.w3c.dom.Document, java.io.OutputStream, de.intevation.artifacts.CallContext)
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355 */
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356 @Override
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357 public void out(Document format, OutputStream outputStream, CallContext context)
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358 throws IOException {
68
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359 log.debug("TGNVArtifactBase.out");
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diff changeset
360 try {
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361
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diff changeset
362 if (current != null && current instanceof OutputTransition){
73
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diff changeset
363 ((OutputTransition)current).out(this.readOutputType(format), outputStream);
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diff changeset
364 context.afterCall(CallContext.STORE); // TODO: FIXME Schmutzige L�sung: Besser einen weiteren Transitionsschritt zwischenschalten.
68
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diff changeset
365 }
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366 } catch (TransitionException e) {
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367 log.error(e,e);
89
cde042a0a395 Successreporting added
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368 throw new IOException(e.getMessage());
68
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diff changeset
369 }
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diff changeset
370 }
73
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diff changeset
371
68
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diff changeset
372 protected String readOutputType(Document document){
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373 String value = Config.getStringXPath(document,"action/out/@name");
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374 return value;
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375 }
52
4d6a82b96059 First Implementation of the GNV-Artifacts
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parents:
diff changeset
376 }

http://dive4elements.wald.intevation.org