Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/OutputStateBase.java @ 337:a887074460b6

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Last Step of the Refactoring Work on the Transition Model. Splitted Businesslogic between States and Transitions. Splitted the ConfigurationElements of State and Transition in several XML-Fragments. gnv-artifacts/trunk@403 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Tue, 08 Dec 2009 13:38:21 +0000
parents e964a3d8f7bc
children bed9735adf84
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 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 import de.intevation.artifacts.CallMeta;
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20 import de.intevation.gnv.artifacts.cache.CacheFactory;
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21 import de.intevation.gnv.artifacts.ressource.RessourceFactory;
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22 import de.intevation.gnv.geobackend.base.Result;
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23 import de.intevation.gnv.geobackend.base.query.QueryExecutor;
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24 import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory;
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25 import de.intevation.gnv.geobackend.base.query.exception.QueryException;
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26 import de.intevation.gnv.state.exception.StateException;
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27
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28 /**
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29 * @author Tim Englich <tim.englich@intevation.de>
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30 *
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31 */
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32 public abstract class OutputStateBase extends StateBase implements
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33 OutputState {
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34
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35 /**
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36 * The UID of this Class
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37 */
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38 private static final long serialVersionUID = -1718732895737303823L;
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39
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40 /**
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41 * the logger, used to log exceptions and additonaly information
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42 */
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43 private static Logger log = Logger.getLogger(OutputStateBase.class);
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44
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45 /**
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46 * The different Outputmodes which are provided by an OutputState
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47 */
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48 protected Collection<OutputMode> outputModes = null;
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49
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50 protected String queryODVID = null;
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51
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52 /**
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53 * Constructor
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54 */
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55 public OutputStateBase() {
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56 super();
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57 }
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58
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59 /**
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60 * @see de.intevation.gnv.state.OutputState#getOutputModes()
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61 */
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62 public Collection<OutputMode> getOutputModes() {
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63 log.debug("OutputStateBase.getOutputModes");
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64 return this.outputModes;
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65 }
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66
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67 /**
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68 * @see de.intevation.gnv.state.StateBase#setup(org.w3c.dom.Node)
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69 */
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70 @Override
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71 public void setup(Node configuration) {
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72 log.debug("OutputStateBase.setup");
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73 super.setup(configuration);
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74
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75 this.queryODVID = Config.getStringXPath(configuration,"queryID-odv");
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76
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77 NodeList outputModeList = Config.getNodeSetXPath(configuration,
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78 "outputsModes/outputsMode");
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79 if (outputModeList != null) {
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80 log.debug(outputModeList.getLength() + " were found.");
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81 this.outputModes = new ArrayList<OutputMode>(outputModeList
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82 .getLength());
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83 for (int i = 0; i < outputModeList.getLength(); i++) {
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84 Element currentNode = (Element)outputModeList.item(i);
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85 String name = currentNode.getAttribute("name");
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86 String description =currentNode.getAttribute("description");
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87 String mimeType = currentNode.getAttribute("mime-type");
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88 NodeList inputValuesList = Config.getNodeSetXPath(currentNode,
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89 "parameters/inputvalue");
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90 Collection<InputValue> inputParameters = null;
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91 if (inputValuesList != null) {
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92 inputParameters = new ArrayList<InputValue>(inputValuesList
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93 .getLength());
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94 for (int j = 0; j < inputValuesList.getLength(); j++) {
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95 Element currentInputValuesNode = (Element)inputValuesList.item(j);
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96 String inputValueName = currentInputValuesNode.getAttribute("name");
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97 String inputValueType = currentInputValuesNode.getAttribute("type");
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98 String defaultValue =currentInputValuesNode.getAttribute("value");
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99 boolean isMultiselect = false;
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100 InputValue inputValue = new DefaultInputValue(
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101 inputValueName, inputValueType, defaultValue,
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102 isMultiselect);
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103 inputParameters.add(inputValue);
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104 }
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105 }
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106
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107 OutputMode outputMode = new DefaultOutputMode(name,
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108 description, mimeType, inputParameters);
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109 log.debug(outputMode.toString());
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110 this.outputModes.add(outputMode);
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111
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112 }
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113 }
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114 }
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115
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116 /**
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117 * @see de.intevation.gnv.state.StateBase#advance()
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118 */
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119 @Override
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120 public void advance(String uuid, CallMeta callMeta)
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121 throws StateException {
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122 }
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123
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124 @Override
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125 public void initialize(String uuid, CallMeta callMeta)
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126 throws StateException {
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127 }
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128
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129 public void out(Document format, Collection<InputData> inputData,
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130 OutputStream outputStream, String uuid, CallMeta callMeta)
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131 throws StateException {
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132 }
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133
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134 /**
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135 * @see de.intevation.gnv.state.OutputState#out(java.lang.String,
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136 * java.util.Collection, java.io.OutputStream)
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137 */
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138 public void out(String outputMode, Collection<InputData> inputData,
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139 OutputStream outputStream) throws StateException {
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140 }
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141
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142 /**
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143 * @return
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144 */
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145 protected Collection<Result> getChartResult(String uuid) {
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146 log.debug("OutputStateBase.getChartResult");
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147 Collection<Result> result = null;
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148 if (CacheFactory.getInstance().isInitialized()) {
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149 String key = uuid + super.getID();
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150 log.debug("Hash for Queryelements: " + key);
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151 net.sf.ehcache.Element value = CacheFactory.getInstance().getCache().get(key);
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152 if (value != null) {
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153 result = (Collection<Result>) (value.getObjectValue());
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154 }else{
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155 result = this.getData(this.queryID);
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156 if (CacheFactory.getInstance().isInitialized()) {
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157 CacheFactory.getInstance().getCache().put(new net.sf.ehcache.Element(key, result));
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158 }
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159
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160 }
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161 }
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162 return result;
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163 }
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164
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165 protected Object getChartFromCache(String uuid) {
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166 log.debug("Fetch chart [" + uuid + "] from cache");
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167 CacheFactory cacheFactory = CacheFactory.getInstance();
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168 if (cacheFactory.isInitialized()) {
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169 String key = "chart_" + uuid + super.getID();
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170 net.sf.ehcache.Element object = cacheFactory.getCache().get(key);
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171
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172 if (object != null) {
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173 return object.getObjectValue();
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174 }
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175 }
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176 return null;
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177 }
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178
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179 protected Collection<Result> getODVResult(String uuid) {
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180 log.debug("OutputStateBase.getODVResult");
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181 // TODO add Caching? I think it's not nessessary
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182 Collection<Result> returnValue = null;
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183 if (this.queryODVID != null){
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184 returnValue = this.getData(this.queryODVID);
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185 }else{
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186 log.warn("No Query for ODV Data is defined.");
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187 }
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188 return returnValue;
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189 }
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190
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191 /**
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192 * @param returnValue
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193 * @return
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194 */
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195 private Collection<Result> getData(String queryID) {
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196 log.debug("OutputStateBase.getData");
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197 Collection<Result> returnValue = null;
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198 try {
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199 String[] filterValues = this.generateFilterValuesFromInputData();
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200 try {
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201 QueryExecutor queryExecutor = QueryExecutorFactory
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202 .getInstance()
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203 .getQueryExecutor();
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204 returnValue = queryExecutor.executeQuery(queryID,filterValues);
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205 } catch (RuntimeException e) {
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206 log.error(e, e);
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207 }
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208 } catch (QueryException e) {
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209 log.error(e, e);
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210 }
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211 return returnValue;
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212 }
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213
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214 protected void removeChartResult(String uuid) {
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215 log.debug("OutputStateBase.getChartResult");
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216 if (CacheFactory.getInstance().isInitialized()) {
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217 String key = uuid + super.getID();
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218 log.debug("Hash for Queryelements: " + key);
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219 net.sf.ehcache.Element value = CacheFactory.getInstance().getCache().get(key);
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220 if (value != null) {
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221 CacheFactory.getInstance().getCache().remove(key);
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222 }
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223 }
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224 }
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225
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226 protected void removeChart(String uuid) {
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227 log.debug("OutputStateBase.removeChart from cache");
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228
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229 CacheFactory cacheFactory = CacheFactory.getInstance();
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230 if (cacheFactory.isInitialized()) {
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231 String key = "chart_" + uuid + super.getID();
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232 net.sf.ehcache.Element object = cacheFactory.getCache().get(key);
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233 if (object != null)
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234 cacheFactory.getCache().remove(key);
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235 }
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236 }
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237
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238 protected void purifyChart(Object chart, String uuid) {
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239 log.debug("Prufify chart [" + uuid + "]");
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240 CacheFactory cacheFactory = CacheFactory.getInstance();
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241 if (cacheFactory.isInitialized()) {
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242 String key = "chart_" + uuid + getID();
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243 cacheFactory.getCache().put(new net.sf.ehcache.Element(key, chart));
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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 * @see de.intevation.gnv.state.StateBase#putInputData(java.util.Collection, java.lang.String)
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249 */
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250 @Override
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251 public void putInputData(Collection<InputData> inputData,
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252 String uuid)
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253 throws StateException {
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254 log.debug("OutputStateBase.putInputData");
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255 this.removeChartResult(uuid);
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256 this.removeChart(uuid);
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257 super.putInputData(inputData, uuid);
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258 }
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259
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260 public void out(String outputMode, Collection<InputData> inputData,
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261 OutputStream outputStream, String uuid, CallMeta callMeta)
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262 throws StateException {
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263 }
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264
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265
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266 protected String getMessage(Locale locale, String key, String value) {
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267 return RessourceFactory.getInstance().getRessource(
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268 locale,
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269 key,
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270 value
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271 );
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272 }
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273 }
http://dive4elements.wald.intevation.org