Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/OutputStateBase.java @ 480:211cad2fb5ba

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Rebased "Horizonalschnitte" to own state class to break from the not well fitting TimeSeriesOutputState. gnv-artifacts/trunk@552 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 17 Jan 2010 12:22:56 +0000
parents 8975de9d7483
children cef17cc90fd0
rev   line source
335
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1 /**
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2 *
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3 */
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4 package de.intevation.gnv.state;
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5
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6 import de.intevation.artifactdatabase.Config;
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7
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8 import de.intevation.artifacts.CallContext;
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9 import de.intevation.artifacts.CallMeta;
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10
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11 import de.intevation.gnv.artifacts.cache.CacheFactory;
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12
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13 import de.intevation.gnv.artifacts.ressource.RessourceFactory;
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14
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15 import de.intevation.gnv.geobackend.base.Result;
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16
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17 import de.intevation.gnv.geobackend.base.query.QueryExecutor;
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18 import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory;
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19
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20 import de.intevation.gnv.geobackend.base.query.exception.QueryException;
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21
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22 import de.intevation.gnv.state.exception.StateException;
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23
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24 import java.io.OutputStream;
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25
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26 import java.util.ArrayList;
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27 import java.util.Collection;
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28 import java.util.Locale;
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29
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30 import org.apache.log4j.Logger;
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31
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32 import org.w3c.dom.Document;
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33 import org.w3c.dom.Element;
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34 import org.w3c.dom.Node;
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35 import org.w3c.dom.NodeList;
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36
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37 /**
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38 * @author Tim Englich <tim.englich@intevation.de>
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39 *
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40 */
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41 public abstract class OutputStateBase
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42 extends StateBase
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43 implements OutputState
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44 {
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45 public static final String XPATH_OUTPUT_MODE =
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46 "/art:action/art:out/@name";
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47
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48 public static final String XPATH_MIME_TYPE =
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49 "/art:action/art:out/art:mime-type/@value";
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50
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51 /**
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52 * The UID of this Class
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53 */
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54 private static final long serialVersionUID = -1718732895737303823L;
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55
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56 /**
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57 * the logger, used to log exceptions and additonaly information
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58 */
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59 private static Logger log = Logger.getLogger(OutputStateBase.class);
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60
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61 /**
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62 * The different Outputmodes which are provided by an OutputState
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63 */
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64 protected Collection<OutputMode> outputModes = null;
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65
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66 protected String queryODVID = null;
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67
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68 /**
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69 * Constructor
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70 */
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71 public OutputStateBase() {
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72 super();
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73 }
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74
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75 /**
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76 * @see de.intevation.gnv.state.OutputState#getOutputModes()
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77 */
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78 public Collection<OutputMode> getOutputModes() {
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79 log.debug("OutputStateBase.getOutputModes");
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80 return this.outputModes;
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81 }
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82
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83 /**
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84 * @see de.intevation.gnv.state.StateBase#setup(org.w3c.dom.Node)
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85 */
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86 @Override
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87 public void setup(Node configuration) {
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88 log.debug("OutputStateBase.setup");
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89 super.setup(configuration);
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90
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91 this.queryODVID = Config.getStringXPath(configuration,"queryID-odv");
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92
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93 NodeList outputModeList = Config.getNodeSetXPath(configuration,
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94 "outputsModes/outputsMode");
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95 if (outputModeList != null) {
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96 log.debug(outputModeList.getLength() + " were found.");
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97 this.outputModes = new ArrayList<OutputMode>(outputModeList
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98 .getLength());
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99 for (int i = 0; i < outputModeList.getLength(); i++) {
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100 Element currentNode = (Element)outputModeList.item(i);
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101 String name = currentNode.getAttribute("name");
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102 String description =currentNode.getAttribute("description");
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103 String mimeType = currentNode.getAttribute("mime-type");
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104 NodeList inputValuesList = Config.getNodeSetXPath(currentNode,
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105 "parameters/inputvalue");
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106 Collection<InputValue> inputParameters = null;
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107 if (inputValuesList != null) {
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108 inputParameters = new ArrayList<InputValue>(inputValuesList
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109 .getLength());
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110 for (int j = 0; j < inputValuesList.getLength(); j++) {
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111 Element currentInputValuesNode = (Element)inputValuesList.item(j);
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112 String inputValueName = currentInputValuesNode.getAttribute("name");
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113 String inputValueType = currentInputValuesNode.getAttribute("type");
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114 String defaultValue =currentInputValuesNode.getAttribute("value");
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115 boolean isMultiselect = false;
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116 InputValue inputValue = new DefaultInputValue(
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117 inputValueName, inputValueType, defaultValue,
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118 isMultiselect);
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119 inputParameters.add(inputValue);
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120 }
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121 }
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122
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123 OutputMode outputMode = new DefaultOutputMode(name,
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124 description, mimeType, inputParameters);
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125 log.debug(outputMode.toString());
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126 this.outputModes.add(outputMode);
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127
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128 }
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129 }
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130 }
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131
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132 /**
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133 * @see de.intevation.gnv.state.StateBase#advance()
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134 */
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135 @Override
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136 public void advance(String uuid, CallMeta callMeta)
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137 throws StateException {
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138 }
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139
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140 @Override
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141 public void initialize(String uuid, CallMeta callMeta)
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142 throws StateException {
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143 }
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144
480
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145 public void out(
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146 Document format,
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147 Collection<InputData> inputData,
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148 OutputStream outputStream,
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149 String uuid,
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150 CallMeta callMeta
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151 )
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152 throws StateException
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153 {
335
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154 }
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155
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156 /**
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157 * @see de.intevation.gnv.state.OutputState#out(java.lang.String,
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158 * java.util.Collection, java.io.OutputStream)
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159 */
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160 public void out(String outputMode, Collection<InputData> inputData,
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161 OutputStream outputStream) throws StateException {
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162 }
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163
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164 /**
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165 * @return
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166 */
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167 protected Object getChartResult(String uuid, CallContext callContext) {
335
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168 log.debug("OutputStateBase.getChartResult");
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169 Object result = null;
335
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170 if (CacheFactory.getInstance().isInitialized()) {
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171 String key = uuid + super.getID();
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172 log.debug("Hash for Queryelements: " + key);
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173 net.sf.ehcache.Element value = CacheFactory.getInstance().getCache().get(key);
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174 if (value != null) {
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175 result = value.getObjectValue();
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176 }else{
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177 result = this.getData(this.queryID);
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178 if (CacheFactory.getInstance().isInitialized()) {
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179 CacheFactory.getInstance().getCache().put(new net.sf.ehcache.Element(key, result));
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180 }
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181
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182 }
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183 }
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184 return result;
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185 }
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186
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187 protected Object getChartFromCache(String uuid, CallContext callContext) {
335
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188 log.debug("Fetch chart [" + uuid + "] from cache");
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189 CacheFactory cacheFactory = CacheFactory.getInstance();
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190 if (cacheFactory.isInitialized()) {
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191 String key = "chart_" + uuid + super.getID();
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192 net.sf.ehcache.Element object = cacheFactory.getCache().get(key);
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193
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194 if (object != null) {
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195 return object.getObjectValue();
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196 }
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197 }
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198 return null;
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199 }
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200
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201 protected Collection<Result> getODVResult(String uuid) {
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202 log.debug("OutputStateBase.getODVResult");
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203 // TODO add Caching? I think it's not nessessary
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204 Collection<Result> returnValue = null;
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205 if (this.queryODVID != null){
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206 returnValue = this.getData(this.queryODVID);
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207 }else{
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208 log.warn("No Query for ODV Data is defined.");
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209 }
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210 return returnValue;
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211 }
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212
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213 /**
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214 * @param returnValue
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215 * @return
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216 */
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217 private Collection<Result> getData(String queryID) {
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218 log.debug("OutputStateBase.getData");
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219 Collection<Result> returnValue = null;
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220 try {
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221 String[] filterValues = this.generateFilterValuesFromInputData();
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222 try {
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223 QueryExecutor queryExecutor = QueryExecutorFactory
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224 .getInstance()
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225 .getQueryExecutor();
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226 returnValue = queryExecutor.executeQuery(queryID,filterValues);
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227 } catch (RuntimeException e) {
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228 log.error(e, e);
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229 }
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230 } catch (QueryException e) {
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231 log.error(e, e);
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232 }
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233 return returnValue;
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234 }
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235
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236 protected void removeChartResult(String uuid) {
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237 log.debug("OutputStateBase.getChartResult");
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238 if (CacheFactory.getInstance().isInitialized()) {
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239 String key = uuid + super.getID();
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240 log.debug("Hash for Queryelements: " + key);
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241 net.sf.ehcache.Element value = CacheFactory.getInstance().getCache().get(key);
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242 if (value != null) {
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243 CacheFactory.getInstance().getCache().remove(key);
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244 }
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245 }
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246 }
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247
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248 protected void removeChart(String uuid) {
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249 log.debug("OutputStateBase.removeChart from cache");
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250
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251 CacheFactory cacheFactory = CacheFactory.getInstance();
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252 if (cacheFactory.isInitialized()) {
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253 String key = "chart_" + uuid + super.getID();
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254 net.sf.ehcache.Element object = cacheFactory.getCache().get(key);
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255 if (object != null)
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256 cacheFactory.getCache().remove(key);
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257 }
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258 }
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259
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260 protected void purifyChart(Object chart, String uuid) {
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261 log.debug("Prufify chart [" + uuid + "]");
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262 CacheFactory cacheFactory = CacheFactory.getInstance();
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263 if (cacheFactory.isInitialized()) {
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264 String key = "chart_" + uuid + getID();
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265 cacheFactory.getCache().put(new net.sf.ehcache.Element(key, chart));
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266 }
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267 }
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268
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269 /**
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270 * @see de.intevation.gnv.state.StateBase#putInputData(java.util.Collection, java.lang.String)
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271 */
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272 @Override
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273 public void putInputData(Collection<InputData> inputData,
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274 String uuid)
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275 throws StateException {
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276 log.debug("OutputStateBase.putInputData");
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277 this.removeChartResult(uuid);
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278 this.removeChart(uuid);
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279 super.putInputData(inputData, uuid);
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280 }
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281
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282 public void out(String outputMode, Collection<InputData> inputData,
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283 OutputStream outputStream, String uuid, CallMeta callMeta)
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284 throws StateException {
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285 }
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286
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287
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288 protected String getMessage(Locale locale, String key, String value) {
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289 return RessourceFactory.getInstance().getRessource(
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290 locale,
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291 key,
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292 value
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293 );
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294 }
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295 }
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