Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/transition/OutputTransitionBase.java @ 300:6a3a02e004d9

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Refactored process of chart generation. Charts will be generated via Chart-Interface from rev351 and no more via factory classes. gnv-artifacts/trunk@354 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 20 Nov 2009 13:51:14 +0000
parents 3d6d89bcbf42
children 91c37bf28c0e
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.transition;
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5
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6 import java.io.OutputStream;
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7 import java.util.ArrayList;
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8 import java.util.Collection;
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9
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10
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11 import org.apache.log4j.Logger;
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12 import org.w3c.dom.Element;
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13 import org.w3c.dom.Node;
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14 import org.w3c.dom.NodeList;
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15
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16 import de.intevation.artifactdatabase.Config;
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17 import de.intevation.artifacts.CallMeta;
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18 import de.intevation.gnv.artifacts.cache.CacheFactory;
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19 import de.intevation.gnv.geobackend.base.Result;
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20 import de.intevation.gnv.geobackend.base.query.QueryExecutor;
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21 import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory;
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22 import de.intevation.gnv.geobackend.base.query.exception.QueryException;
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23 import de.intevation.gnv.transition.exception.TransitionException;
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24
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25 /**
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26 * @author Tim Englich <tim.englich@intevation.de>
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27 *
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28 */
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29 public abstract class OutputTransitionBase extends TransitionBase implements
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30 OutputTransition {
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31
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32 /**
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33 * The UID of this Class
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34 */
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35 private static final long serialVersionUID = -1718732895737303823L;
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36
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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(OutputTransitionBase.class);
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41
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42 /**
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43 * The different Outputmodes which are provided by an OutputTransition
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44 */
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45 protected Collection<OutputMode> outputModes = null;
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46
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47 protected String queryODVID = null;
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48
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49 /**
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50 * Constructor
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51 */
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52 public OutputTransitionBase() {
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53 super();
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54 }
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55
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56 /**
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57 * @see de.intevation.gnv.transition.OutputTransition#getOutputModes()
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58 */
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59 public Collection<OutputMode> getOutputModes() {
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60 log.debug("OutputTransitionBase.getOutputModes");
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61 return this.outputModes;
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62 }
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63
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64 /**
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65 * @see de.intevation.gnv.transition.TransitionBase#setup(org.w3c.dom.Node)
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66 */
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67 @Override
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68 public void setup(Node configuration) {
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69 log.debug("OutputTransitionBase.setup");
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70 super.setup(configuration);
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72 this.queryODVID = Config.getStringXPath(configuration,"queryID-odv");
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73
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74 NodeList outputModeList = Config.getNodeSetXPath(configuration,
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75 "outputsModes/outputsMode");
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76 if (outputModeList != null) {
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77 log.debug(outputModeList.getLength() + " were found.");
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78 this.outputModes = new ArrayList<OutputMode>(outputModeList
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79 .getLength());
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80 for (int i = 0; i < outputModeList.getLength(); i++) {
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81 Element currentNode = (Element)outputModeList.item(i);
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82 String name = currentNode.getAttribute("name");
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83 String description =currentNode.getAttribute("description");
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84 String mimeType = currentNode.getAttribute("mime-type");
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85 NodeList inputValuesList = Config.getNodeSetXPath(currentNode,
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86 "parameters/inputvalue");
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87 Collection<InputValue> inputParameters = null;
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88 if (inputValuesList != null) {
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89 inputParameters = new ArrayList<InputValue>(inputValuesList
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90 .getLength());
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91 for (int j = 0; j < inputValuesList.getLength(); j++) {
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92 Element currentInputValuesNode = (Element)inputValuesList.item(j);
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93 String inputValueName = currentInputValuesNode.getAttribute("name");
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94 String inputValueType = currentInputValuesNode.getAttribute("type");
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95 String defaultValue =currentInputValuesNode.getAttribute("value");
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96 boolean isMultiselect = false;
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97 InputValue inputValue = new DefaultInputValue(
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98 inputValueName, inputValueType, defaultValue,
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99 isMultiselect);
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100 inputParameters.add(inputValue);
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101 }
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102 }
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103
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104 OutputMode outputMode = new DefaultOutputMode(name,
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105 description, mimeType, inputParameters);
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106 log.debug(outputMode.toString());
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107 this.outputModes.add(outputMode);
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108
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109 }
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110 }
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111 }
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112
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113 /**
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114 * @see de.intevation.gnv.transition.TransitionBase#advance()
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115 */
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116 @Override
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117 public void advance(String uuid, CallMeta callMeta)
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118 throws TransitionException {
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119 log.debug("OutputTransitionBase.advance");
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120 if (this.getChartResult(uuid) == null) {
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121 super.advance(uuid, callMeta);
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122 }
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123 }
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124
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125 /**
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126 * @see de.intevation.gnv.transition.OutputTransition#out(java.lang.String,
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127 * java.util.Collection, java.io.OutputStream)
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128 */
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129 public void out(String outputMode, Collection<InputData> inputData,
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130 OutputStream outputStream) throws TransitionException {
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131 }
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132
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133 /**
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134 * @return
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135 */
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136 protected Collection<Result> getChartResult(String uuid) {
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137 log.debug("OutputTransitionBase.getChartResult");
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138 if (CacheFactory.getInstance().isInitialized()) {
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139 String key = uuid + super.getID();
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140 log.debug("Hash for Queryelements: " + key);
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141 net.sf.ehcache.Element value = CacheFactory.getInstance().getCache().get(key);
171
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142 if (value != null) {
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143 return (Collection<Result>) (value.getObjectValue());
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144 }
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145 }
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146 return null;
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147 }
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148
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149 protected Object getChartFromCache(String uuid) {
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150 log.debug("Fetch chart [" + uuid + "] from cache");
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151 CacheFactory cacheFactory = CacheFactory.getInstance();
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152 if (cacheFactory.isInitialized()) {
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153 String key = "chart_" + uuid + super.getID();
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154 net.sf.ehcache.Element object = cacheFactory.getCache().get(key);
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155
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156 if (object != null) {
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157 return object.getObjectValue();
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158 }
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159 }
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160 return null;
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161 }
182
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162
232
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163 protected Collection<Result> getODVResult(String uuid) {
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164 log.debug("OutputTransitionBase.getODVResult");
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165 // TODO add Caching? I think it's not nessessary
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166 Collection<Result> returnValue = null;
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167 if (this.queryODVID != null){
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168 try {
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169 String[] filterValues = this.generateFilterValuesFromInputData();
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170 try {
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171 QueryExecutor queryExecutor = QueryExecutorFactory
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172 .getInstance()
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173 .getQueryExecutor();
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174 returnValue = queryExecutor.executeQuery(this.queryODVID,
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175 filterValues);
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176 } catch (RuntimeException e) {
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177 log.error(e, e);
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178 }
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179 } catch (QueryException e) {
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180 log.error(e, e);
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181 }
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182 }else{
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183 log.warn("No Query for ODV Data is defined.");
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184 }
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185 return returnValue;
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186 }
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187
182
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188 protected void removeChartResult(String uuid) {
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189 log.debug("OutputTransitionBase.getChartResult");
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190 if (CacheFactory.getInstance().isInitialized()) {
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191 String key = uuid + super.getID();
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192 log.debug("Hash for Queryelements: " + key);
204
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193 net.sf.ehcache.Element value = CacheFactory.getInstance().getCache().get(key);
182
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194 if (value != null) {
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195 CacheFactory.getInstance().getCache().remove(key);
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196 }
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197 }
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198 }
171
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199
99
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200 /**
171
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201 * @see de.intevation.gnv.transition.TransitionBase#purifyResult(java.util.Collection,
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202 * java.lang.String)
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203 */
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204 @Override
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205 protected void purifyResult(Collection<Result> result, String uuid) {
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206 log.debug("OutputTransitionBase.purifyResult");
171
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207 if (CacheFactory.getInstance().isInitialized()) {
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208 String key = uuid + super.getID();
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209 log.debug("Hash for Queryelements: " + key);
204
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210 CacheFactory.getInstance().getCache().put(new net.sf.ehcache.Element(key, result));
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211 }
86
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212 }
64
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213
300
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214
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215 protected void purifyChart(Object chart, String uuid) {
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diff changeset
216 log.debug("Prufify chart [" + uuid + "]");
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diff changeset
217 CacheFactory cacheFactory = CacheFactory.getInstance();
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218 if (cacheFactory.isInitialized()) {
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diff changeset
219 String key = "chart_" + uuid + getID();
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diff changeset
220 cacheFactory.getCache().put(new net.sf.ehcache.Element(key, chart));
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221 }
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222 }
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223
182
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224 /**
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225 * @see de.intevation.gnv.transition.TransitionBase#putInputData(java.util.Collection, java.lang.String)
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226 */
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diff changeset
227 @Override
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diff changeset
228 public void putInputData(Collection<InputData> inputData,
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diff changeset
229 String uuid)
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diff changeset
230 throws TransitionException {
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diff changeset
231 log.debug("OutputTransitionBase.putInputData");
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diff changeset
232 this.removeChartResult(uuid);
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diff changeset
233 super.putInputData(inputData, uuid);
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diff changeset
234 }
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diff changeset
235
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diff changeset
236 public void out(String outputMode, Collection<InputData> inputData,
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diff changeset
237 OutputStream outputStream, String uuid, CallMeta callMeta)
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diff changeset
238 throws TransitionException {
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diff changeset
239 }
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diff changeset
240
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diff changeset
241
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diff changeset
242
64
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243 }
http://dive4elements.wald.intevation.org