Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/OutputStateBase.java @ 457:47ad9721e692

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Added RasterObject for caching the Rastertiles to get a better performance. gnv-artifacts/trunk@509 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Tue, 05 Jan 2010 14:12:03 +0000
parents 8975de9d7483
children 211cad2fb5ba
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.state;
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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 import java.util.Locale;
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10
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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
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20 import de.intevation.artifacts.CallMeta;
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21 import de.intevation.artifacts.CallContext;
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22
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23 import de.intevation.gnv.artifacts.cache.CacheFactory;
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24 import de.intevation.gnv.artifacts.ressource.RessourceFactory;
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25 import de.intevation.gnv.geobackend.base.Result;
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26 import de.intevation.gnv.geobackend.base.query.QueryExecutor;
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27 import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory;
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28 import de.intevation.gnv.geobackend.base.query.exception.QueryException;
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29 import de.intevation.gnv.state.exception.StateException;
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30
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31 /**
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32 * @author Tim Englich <tim.englich@intevation.de>
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33 *
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34 */
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35 public abstract class OutputStateBase extends StateBase implements
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36 OutputState {
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37
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38 /**
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39 * The UID of this Class
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40 */
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41 private static final long serialVersionUID = -1718732895737303823L;
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42
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43 /**
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44 * the logger, used to log exceptions and additonaly information
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45 */
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46 private static Logger log = Logger.getLogger(OutputStateBase.class);
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47
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48 /**
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49 * The different Outputmodes which are provided by an OutputState
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50 */
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51 protected Collection<OutputMode> outputModes = null;
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52
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53 protected String queryODVID = null;
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54
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55 /**
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56 * Constructor
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57 */
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58 public OutputStateBase() {
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59 super();
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60 }
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61
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62 /**
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63 * @see de.intevation.gnv.state.OutputState#getOutputModes()
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64 */
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65 public Collection<OutputMode> getOutputModes() {
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66 log.debug("OutputStateBase.getOutputModes");
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67 return this.outputModes;
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68 }
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69
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70 /**
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71 * @see de.intevation.gnv.state.StateBase#setup(org.w3c.dom.Node)
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72 */
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73 @Override
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74 public void setup(Node configuration) {
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75 log.debug("OutputStateBase.setup");
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76 super.setup(configuration);
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77
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78 this.queryODVID = Config.getStringXPath(configuration,"queryID-odv");
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79
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80 NodeList outputModeList = Config.getNodeSetXPath(configuration,
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81 "outputsModes/outputsMode");
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82 if (outputModeList != null) {
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83 log.debug(outputModeList.getLength() + " were found.");
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84 this.outputModes = new ArrayList<OutputMode>(outputModeList
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85 .getLength());
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86 for (int i = 0; i < outputModeList.getLength(); i++) {
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87 Element currentNode = (Element)outputModeList.item(i);
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88 String name = currentNode.getAttribute("name");
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89 String description =currentNode.getAttribute("description");
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90 String mimeType = currentNode.getAttribute("mime-type");
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91 NodeList inputValuesList = Config.getNodeSetXPath(currentNode,
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92 "parameters/inputvalue");
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93 Collection<InputValue> inputParameters = null;
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94 if (inputValuesList != null) {
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95 inputParameters = new ArrayList<InputValue>(inputValuesList
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96 .getLength());
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97 for (int j = 0; j < inputValuesList.getLength(); j++) {
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98 Element currentInputValuesNode = (Element)inputValuesList.item(j);
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99 String inputValueName = currentInputValuesNode.getAttribute("name");
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100 String inputValueType = currentInputValuesNode.getAttribute("type");
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101 String defaultValue =currentInputValuesNode.getAttribute("value");
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102 boolean isMultiselect = false;
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103 InputValue inputValue = new DefaultInputValue(
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104 inputValueName, inputValueType, defaultValue,
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105 isMultiselect);
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106 inputParameters.add(inputValue);
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107 }
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108 }
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109
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110 OutputMode outputMode = new DefaultOutputMode(name,
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111 description, mimeType, inputParameters);
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112 log.debug(outputMode.toString());
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113 this.outputModes.add(outputMode);
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114
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115 }
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116 }
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117 }
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118
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119 /**
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120 * @see de.intevation.gnv.state.StateBase#advance()
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121 */
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122 @Override
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123 public void advance(String uuid, CallMeta callMeta)
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124 throws StateException {
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125 }
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126
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127 @Override
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128 public void initialize(String uuid, CallMeta callMeta)
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129 throws StateException {
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130 }
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131
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132 public void out(Document format, Collection<InputData> inputData,
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133 OutputStream outputStream, String uuid, CallMeta callMeta)
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134 throws StateException {
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135 }
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136
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137 /**
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138 * @see de.intevation.gnv.state.OutputState#out(java.lang.String,
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139 * java.util.Collection, java.io.OutputStream)
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140 */
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141 public void out(String outputMode, Collection<InputData> inputData,
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142 OutputStream outputStream) throws StateException {
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143 }
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144
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145 /**
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146 * @return
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147 */
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148 protected Object getChartResult(String uuid, CallContext callContext) {
335
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149 log.debug("OutputStateBase.getChartResult");
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150 Object result = null;
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151 if (CacheFactory.getInstance().isInitialized()) {
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152 String key = uuid + super.getID();
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153 log.debug("Hash for Queryelements: " + key);
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154 net.sf.ehcache.Element value = CacheFactory.getInstance().getCache().get(key);
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155 if (value != null) {
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156 result = value.getObjectValue();
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157 }else{
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158 result = this.getData(this.queryID);
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159 if (CacheFactory.getInstance().isInitialized()) {
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160 CacheFactory.getInstance().getCache().put(new net.sf.ehcache.Element(key, result));
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161 }
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162
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163 }
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164 }
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165 return result;
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166 }
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167
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168 protected Object getChartFromCache(String uuid, CallContext callContext) {
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169 log.debug("Fetch chart [" + uuid + "] from cache");
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170 CacheFactory cacheFactory = CacheFactory.getInstance();
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171 if (cacheFactory.isInitialized()) {
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172 String key = "chart_" + uuid + super.getID();
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173 net.sf.ehcache.Element object = cacheFactory.getCache().get(key);
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174
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175 if (object != null) {
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176 return object.getObjectValue();
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177 }
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178 }
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179 return null;
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180 }
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181
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182 protected Collection<Result> getODVResult(String uuid) {
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183 log.debug("OutputStateBase.getODVResult");
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184 // TODO add Caching? I think it's not nessessary
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185 Collection<Result> returnValue = null;
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186 if (this.queryODVID != null){
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187 returnValue = this.getData(this.queryODVID);
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188 }else{
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189 log.warn("No Query for ODV Data is defined.");
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190 }
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191 return returnValue;
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192 }
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193
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194 /**
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195 * @param returnValue
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196 * @return
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197 */
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198 private Collection<Result> getData(String queryID) {
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199 log.debug("OutputStateBase.getData");
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200 Collection<Result> returnValue = null;
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201 try {
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202 String[] filterValues = this.generateFilterValuesFromInputData();
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203 try {
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204 QueryExecutor queryExecutor = QueryExecutorFactory
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205 .getInstance()
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206 .getQueryExecutor();
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207 returnValue = queryExecutor.executeQuery(queryID,filterValues);
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208 } catch (RuntimeException e) {
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209 log.error(e, e);
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210 }
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211 } catch (QueryException e) {
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212 log.error(e, e);
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213 }
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214 return returnValue;
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215 }
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216
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217 protected void removeChartResult(String uuid) {
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218 log.debug("OutputStateBase.getChartResult");
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219 if (CacheFactory.getInstance().isInitialized()) {
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220 String key = uuid + super.getID();
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221 log.debug("Hash for Queryelements: " + key);
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222 net.sf.ehcache.Element value = CacheFactory.getInstance().getCache().get(key);
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223 if (value != null) {
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224 CacheFactory.getInstance().getCache().remove(key);
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225 }
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226 }
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227 }
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228
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229 protected void removeChart(String uuid) {
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230 log.debug("OutputStateBase.removeChart from cache");
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231
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232 CacheFactory cacheFactory = CacheFactory.getInstance();
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233 if (cacheFactory.isInitialized()) {
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234 String key = "chart_" + uuid + super.getID();
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235 net.sf.ehcache.Element object = cacheFactory.getCache().get(key);
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236 if (object != null)
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237 cacheFactory.getCache().remove(key);
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238 }
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239 }
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240
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241 protected void purifyChart(Object chart, String uuid) {
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242 log.debug("Prufify chart [" + uuid + "]");
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243 CacheFactory cacheFactory = CacheFactory.getInstance();
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244 if (cacheFactory.isInitialized()) {
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245 String key = "chart_" + uuid + getID();
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246 cacheFactory.getCache().put(new net.sf.ehcache.Element(key, chart));
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247 }
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248 }
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249
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250 /**
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251 * @see de.intevation.gnv.state.StateBase#putInputData(java.util.Collection, java.lang.String)
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252 */
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253 @Override
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254 public void putInputData(Collection<InputData> inputData,
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255 String uuid)
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256 throws StateException {
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257 log.debug("OutputStateBase.putInputData");
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258 this.removeChartResult(uuid);
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259 this.removeChart(uuid);
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260 super.putInputData(inputData, uuid);
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261 }
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262
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263 public void out(String outputMode, Collection<InputData> inputData,
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264 OutputStream outputStream, String uuid, CallMeta callMeta)
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265 throws StateException {
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266 }
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267
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268
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269 protected String getMessage(Locale locale, String key, String value) {
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270 return RessourceFactory.getInstance().getRessource(
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271 locale,
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272 key,
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273 value
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274 );
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275 }
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276 }
http://dive4elements.wald.intevation.org