Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/OutputStateBase.java @ 857:482317922c8b

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Added a very simple wrapper to export the mapfile path for MapServer (issue220). gnv-artifacts/trunk@975 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 23 Apr 2010 13:16:30 +0000
parents 499cfbbb61bc
children c07d9f9a738c
rev   line source
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1 package de.intevation.gnv.state;
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2
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3 import java.io.OutputStream;
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4 import java.util.ArrayList;
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5 import java.util.Collection;
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6 import java.util.HashMap;
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7 import java.util.Iterator;
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8 import java.util.List;
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9 import java.util.Locale;
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10
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11 import javax.xml.xpath.XPathConstants;
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12
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13 import net.sf.ehcache.Cache;
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15 import org.apache.log4j.Logger;
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16 import org.w3c.dom.Document;
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17 import org.w3c.dom.Element;
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18 import org.w3c.dom.Node;
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19 import org.w3c.dom.NodeList;
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20
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21 import de.intevation.artifactdatabase.Config;
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22 import de.intevation.artifactdatabase.XMLUtils;
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23 import de.intevation.artifacts.CallContext;
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24 import de.intevation.artifacts.CallMeta;
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25 import de.intevation.gnv.artifacts.cache.CacheFactory;
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26 import de.intevation.gnv.artifacts.ressource.RessourceFactory;
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27 import de.intevation.gnv.geobackend.base.Result;
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28 import de.intevation.gnv.geobackend.base.query.QueryExecutor;
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29 import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory;
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30 import de.intevation.gnv.geobackend.base.query.exception.QueryException;
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31 import de.intevation.gnv.state.describedata.MinMaxDescribeData;
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32 import de.intevation.gnv.state.exception.StateException;
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33 import de.intevation.gnv.utils.InputValidator;
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34
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35 /**
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36 * This is the default implementation of <code>OutputState</code>. Artifacts
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37 * having reached this state or a subclass of this state are able to produce
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38 * some output (e.g. chart, histograms, statistic, etc).
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39 *
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40 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
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41 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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42 *
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43 */
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44 public abstract class OutputStateBase
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45 extends StateBase
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46 implements OutputState
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47 {
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48 public static final String XPATH_OUTPUT_MODE =
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49 "/art:action/art:out/@name";
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50
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51 public static final String XPATH_EXPORT_MODE =
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52 "/art:action/art:out/art:export/@name";
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53
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54 public static final String XPATH_MIME_TYPE =
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55 "/art:action/art:out/art:mime-type/@value";
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56
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57 public static final String XPATH_EXPORTS =
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58 "exportModes/export";
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59
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60 /**
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61 * The UID of this Class
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62 */
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63 private static final long serialVersionUID = -1718732895737303823L;
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64
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65 /**
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66 * the logger, used to log exceptions and additonaly information
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67 */
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68 private static Logger log = Logger.getLogger(OutputStateBase.class);
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69
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70 /**
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71 * The different Outputmodes which are provided by an OutputState
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72 */
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73 protected Collection<OutputMode> outputModes = null;
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74
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75 protected String queryODVID = null;
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76
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77 /**
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78 * Constructor
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79 */
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80 public OutputStateBase() {
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81 super();
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82 }
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83
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84 public Collection<OutputMode> getOutputModes() {
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85 log.debug("OutputStateBase.getOutputModes");
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86 return this.outputModes;
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87 }
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88
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89
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90 @Override
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91 public void setup(Node configuration) {
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92 log.debug("OutputStateBase.setup");
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93 super.setup(configuration);
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94
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95 this.queryODVID = Config.getStringXPath(configuration,"queryID-odv");
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96
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97 NodeList outputModeList = Config.getNodeSetXPath(configuration,
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98 "outputsModes/outputsMode");
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99 if (outputModeList != null) {
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100 log.debug(outputModeList.getLength() + " were found.");
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101 this.outputModes = new ArrayList<OutputMode>(outputModeList
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102 .getLength());
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103 for (int i = 0; i < outputModeList.getLength(); i++) {
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104 Element currentNode = (Element)outputModeList.item(i);
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105 String name = currentNode.getAttribute("name");
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106 String description =currentNode.getAttribute("description");
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107 String mimeType = currentNode.getAttribute("mime-type");
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108 NodeList inputValuesList = Config.getNodeSetXPath(currentNode,
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109 "parameters/inputvalue");
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110 Collection<InputValue> inputParameters = null;
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111 if (inputValuesList != null) {
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112 inputParameters = new ArrayList<InputValue>(inputValuesList
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113 .getLength());
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114 for (int j = 0; j < inputValuesList.getLength(); j++) {
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115 Element currentInputValuesNode = (Element)inputValuesList.item(j);
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116 String inputValueName = currentInputValuesNode.getAttribute("name");
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117 String inputValueType = currentInputValuesNode.getAttribute("type");
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118 String defaultValue =currentInputValuesNode.getAttribute("value");
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119 boolean isMultiselect = false;
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120 InputValue inputValue = new DefaultInputValue(
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121 inputValueName, inputValueType, defaultValue,
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122 isMultiselect);
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123 inputParameters.add(inputValue);
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124 }
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125 }
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126
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127 // parse export modes
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128 List<ExportMode> exportList = null;
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129 NodeList exports = (NodeList) XMLUtils.xpath(
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130 currentNode, XPATH_EXPORTS, XPathConstants.NODESET);
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131
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132 if (exports != null) {
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133 int exportSize = exports.getLength();
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134
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135 exportList = new ArrayList<ExportMode>(exportSize);
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136 for (int k = 0; k < exportSize; k++) {
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137 Element exp = (Element) exports.item(k);
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138 String expName = exp.getAttribute("name");
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139 String expDesc = exp.getAttribute("description");
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140 String expMime = exp.getAttribute("mime-type");
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141
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142 exportList.add(
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143 new DefaultExportMode(expName, expDesc, expMime));
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144 }
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145 }
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146
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147 OutputMode outputMode = new DefaultOutputMode(name,
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148 description, mimeType, inputParameters, exportList);
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149 log.debug(outputMode.toString());
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150 this.outputModes.add(outputMode);
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151
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152 }
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153 }
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154 }
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155
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156
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157 @Override
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158 public void advance(String uuid, CallContext context)
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159 throws StateException
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160 {
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161 }
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162
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163
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164 @Override
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165 public void initialize(String uuid, CallContext context)
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166 throws StateException
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167 {
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168 }
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169
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170 /**
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171 * This method needs to be defined by concrete subclasses. Nothing is done
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172 * here.
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173 */
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174 public void out(
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175 Document format,
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176 Collection<InputData> inputData,
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177 OutputStream outputStream,
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178 String uuid,
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179 CallMeta callMeta
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180 )
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181 throws StateException
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182 {
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183 }
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184
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185 /**
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186 * This method needs to be defined by concrete subclasses. Nothing is done
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187 * here.
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188 */
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189 public void out(String outputMode, Collection<InputData> inputData,
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190 OutputStream outputStream) throws StateException {
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191 }
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192
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193 /**
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194 * Returns the data used to create charts. If a cache is configured, try to
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195 * fetch the data from cache. The database is queried if the data is not in
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196 * cache yet, or if no cache is configured. If the cache is configured, but
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197 * the data is not in cache yet, put it into cache for a faster access
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198 * in a later time.
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199 *
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200 * @param uuid The uuid of an artifact.
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201 * @param callContext The CallContext.
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202 * @return the chart data.
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203 */
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204 protected Object getChartResult(String uuid, CallContext callContext) {
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205 log.debug("OutputStateBase.getChartResult");
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206 CacheFactory factory = CacheFactory.getInstance();
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207
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208 if (factory.isInitialized()) {
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209 // we use a cache
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210 log.info("Using cache.");
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211 Cache cache = factory.getCache();
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212 String key = "chart_" + getHash();
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213
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214 net.sf.ehcache.Element value = cache.get(key);
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215 if (value != null) {
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216 log.debug("Found element in cache.");
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217 return value.getObjectValue();
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218 }
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219 else {
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220 log.debug("Element not in cache, we need to ask the database");
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221 Object result = getData(queryID);
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222 cache.put(new net.sf.ehcache.Element(key, result));
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223
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224 return result;
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225 }
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226 }
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227 else {
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228 // we don't use a cache, so we have to query the database every
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229 // single time
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230 log.info("Not using a cache.");
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231 return getData(queryID);
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232 }
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233 }
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234
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235 /**
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236 * This method should no longer be used, because it is not good to put a
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237 * chart into cache. Parameter changes done by the user wouldn't be detected
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238 * proper.
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239 * @deprecated
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240 */
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241 protected Object getChartFromCache(String uuid, CallContext callContext) {
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242 log.debug("Fetch chart [" + uuid + "] from cache");
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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_" + getHash();
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246 net.sf.ehcache.Element object = cacheFactory.getCache().get(key);
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247
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248 if (object != null) {
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249 return object.getObjectValue();
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250 }
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251 }
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252 return null;
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253 }
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254
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255 /**
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256 * Retrieves the data used to create an ODV export.
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257 *
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258 * @param uuid
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259 * @return odv data.
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260 */
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261 protected Collection<Result> getODVResult(String uuid) {
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262 log.debug("OutputStateBase.getODVResult");
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263 // TODO add Caching? I think it's not nessessary
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264 Collection<Result> returnValue = null;
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265 if (this.queryODVID != null){
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266 returnValue = this.getData(this.queryODVID);
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267 }else{
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268 log.warn("No Query for ODV Data is defined.");
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269 }
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270 return returnValue;
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271 }
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272
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273 /**
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274 * Retrieve data from database with help of queryID.
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275 *
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276 * @param queryID A query id defined in sql statements properties file.
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277 * @return some data.
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278 */
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279 protected Collection<Result> getData(String queryID) {
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280 log.debug("OutputStateBase.getData");
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281 Collection<Result> returnValue = null;
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282 try {
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283 String[] filterValues = this.generateFilterValuesFromInputData();
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284 try {
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285 QueryExecutor queryExecutor = QueryExecutorFactory
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286 .getInstance()
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287 .getQueryExecutor();
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288 returnValue = queryExecutor.executeQuery(queryID,filterValues);
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289 } catch (RuntimeException e) {
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290 log.error(e, e);
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291 }
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292 } catch (QueryException e) {
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293 log.error(e, e);
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294 }
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295 return returnValue;
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296 }
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297
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298 /**
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299 * This method removes the data used for creating charts from cache.
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300 *
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301 */
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302 protected void removeChartResult(String uuid) {
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303 log.debug("OutputStateBase.getChartResult");
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304 if (CacheFactory.getInstance().isInitialized()) {
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305 String key = "chart_" + getHash();
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306 log.debug("Hash for Queryelements: " + key);
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307 net.sf.ehcache.Element value = CacheFactory.getInstance().getCache().get(key);
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308 if (value != null) {
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309 CacheFactory.getInstance().getCache().remove(key);
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310 }
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311 }
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312 }
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313
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314 /**
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315 * This method should no longer be used. It removes a chart from cache.
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316 *
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317 * @deprecated
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318 */
335
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319 protected void removeChart(String uuid) {
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320 log.debug("OutputStateBase.removeChart from cache");
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321
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322 CacheFactory cacheFactory = CacheFactory.getInstance();
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323 if (cacheFactory.isInitialized()) {
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324 String key = "chart_" + getHash();
335
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325 net.sf.ehcache.Element object = cacheFactory.getCache().get(key);
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326 if (object != null)
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327 cacheFactory.getCache().remove(key);
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328 }
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329 }
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330
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331 /**
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332 * This is an internal method used while database query.
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333 */
335
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334 protected void purifyChart(Object chart, String uuid) {
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335 log.debug("Prufify chart [" + uuid + "]");
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336 CacheFactory cacheFactory = CacheFactory.getInstance();
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337 if (cacheFactory.isInitialized()) {
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338 String key = "chart_" + getHash();
335
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339 cacheFactory.getCache().put(new net.sf.ehcache.Element(key, chart));
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340 }
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341 }
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342
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343
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344 /**
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345 * Use this method to feed a state with new data.
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346 */
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347 @Override
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348 public Document feed(
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349 CallContext context,
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350 Collection<InputData> inputData,
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351 String uuid)
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352 throws StateException
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353 {
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354 putInputData(inputData, uuid);
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355
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356 return feedSuccess();
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357 }
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358
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359 /**
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360 * This method is used to put new data into a next state. The difference
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361 * between this method and feed is, that this method should be used to
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362 * transfer some old input data required by this state. New data need to be
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363 * inserted via feed!
335
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364 */
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365 @Override
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366 public void putInputData(Collection<InputData> inputData,
335
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367 String uuid)
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368 throws StateException {
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369 log.debug("OutputStateBase.putInputData");
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370 this.removeChartResult(uuid);
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371 this.removeChart(uuid);
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372
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373 if (inputData != null) {
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374 Iterator<InputData> it = inputData.iterator();
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375 InputValidator iv = new InputValidator();
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376 while (it.hasNext()) {
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377 InputData tmpItem = it.next();
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378 Object tmpObj = tmpItem.getObject();
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379 InputValue inputValue = this.inputValues.get(tmpItem.getName());
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380 if (inputValue != null) {
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381 if (this.inputData == null) {
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382 this.inputData = new HashMap<String, InputData>(
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383 inputData.size());
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384 }
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385
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386 boolean valid = InputValidator.isInputValid(tmpItem.getValue(),
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387 inputValue.getType());
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388 if (valid) {
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389 if (tmpItem.getName().equals(MINVALUEFIELDNAME)){
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390 String minValue = tmpItem.getValue();
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391 String maxValue = getInputValue4ID(inputData, MAXVALUEFIELDNAME);
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392 valid = InputValidator.isInputValid(maxValue,inputValue.getType());
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393 if (!valid){
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394 String errMsg = "Wrong input for " + tmpItem.getValue()
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395 + " is not an " + inputValue.getType()
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396 + " Value.";
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397 log.warn(errMsg);
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398 throw new StateException(errMsg);
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399 }
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400
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401 valid = InputValidator.isInputValid(minValue,
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402 maxValue,
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403 inputValue.getType());
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404 if (!valid){
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405 String errMsg = "MaxValue-Input is less than MinValue-Input ";
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406 log.warn(errMsg);
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407 throw new StateException(errMsg);
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408 }
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409 }else if (tmpItem.getName().equals(MAXVALUEFIELDNAME)){
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410 String minValue = getInputValue4ID(inputData, MINVALUEFIELDNAME);
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411 String maxValue = tmpItem.getValue();
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412 valid = InputValidator.isInputValid(minValue,inputValue.getType());
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413 if (!valid){
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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414 String errMsg = "Wrong input for " + tmpItem.getValue()
6484464d2059 Changed the mechanism for searching for specific parameter collections.
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parents: 493
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415 + " is not an " + inputValue.getType()
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parents: 493
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416 + " Value.";
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parents: 493
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417 log.warn(errMsg);
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parents: 493
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418 throw new StateException(errMsg);
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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419 }
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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420
796
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diff changeset
421 valid = InputValidator.isInputValid(minValue,
610
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422 maxValue,
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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423 inputValue.getType());
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
diff changeset
424 if (!valid){
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
diff changeset
425 String errMsg = "MaxValue-Input is less than MinValue-Input ";
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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426 log.warn(errMsg);
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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427 throw new StateException(errMsg);
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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428 }
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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429 }
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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430 this.inputData.put(tmpItem.getName(), tmpItem);
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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431 } else {
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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432 String errMsg = "Wrong input for " + tmpItem.getValue()
6484464d2059 Changed the mechanism for searching for specific parameter collections.
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parents: 493
diff changeset
433 + " is not an " + inputValue.getType()
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parents: 493
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434 + " Value.";
6484464d2059 Changed the mechanism for searching for specific parameter collections.
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parents: 493
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435 log.warn(errMsg);
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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436 throw new StateException(errMsg);
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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437 }
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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438
778
9a828e5a2390 Removed trailing whitespace
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 725
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439 }
610
6484464d2059 Changed the mechanism for searching for specific parameter collections.
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parents: 493
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440 else if (tmpObj != null && tmpObj instanceof MinMaxDescribeData) {
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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441 MinMaxDescribeData data = (MinMaxDescribeData) tmpObj;
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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442 if (this.inputData == null) {
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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443 this.inputData = new HashMap<String, InputData>(inputData.size());
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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444 }
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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445 this.inputData.put(tmpItem.getName(), tmpItem);
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
diff changeset
446 this.inputData.put("minvalue", new DefaultInputData("minvalue", (String) data.getMinValue()));
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
diff changeset
447 this.inputData.put("maxvalue", new DefaultInputData("maxvalue", (String) data.getMaxValue()));
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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448 }
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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449 else {
778
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parents: 725
diff changeset
450
610
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451 String errMsg = "No Inputvalue given for Inputdata "
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parents: 493
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452 + tmpItem.getName();
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parents: 493
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453 log.warn(errMsg + "Value will be ignored");
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parents: 493
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454
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parents: 493
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455 }
6484464d2059 Changed the mechanism for searching for specific parameter collections.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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456 }
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
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457 } else {
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parents: 493
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458 log.warn("No Inputdata given");
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 493
diff changeset
459 }
818
8dc820099306 BUGFIX: Chartresults where stored in Cache using null-Value as Key.
Tim Englich <tim.englich@intevation.de>
parents: 815
diff changeset
460 setHash(uuid);
335
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Tim Englich <tim.englich@intevation.de>
parents:
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461 }
e964a3d8f7bc Some Refactoring work done.
Tim Englich <tim.englich@intevation.de>
parents:
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462
815
22c18083225e Removed compiler warnings while JavaDoc generation.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 803
diff changeset
463
796
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
464 public void out(
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
465 String outputMode,
a5526908f92f Added javadoc in state package.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
466 Collection<InputData> inputData,
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
467 OutputStream outputStream,
a5526908f92f Added javadoc in state package.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
468 String uuid,
a5526908f92f Added javadoc in state package.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
469 CallMeta callMeta)
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parents: 780
diff changeset
470 throws StateException { }
335
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parents:
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471
e964a3d8f7bc Some Refactoring work done.
Tim Englich <tim.englich@intevation.de>
parents:
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472
796
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
473 /**
a5526908f92f Added javadoc in state package.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
474 * Retrieves a message from resource bundle specified by locale.
a5526908f92f Added javadoc in state package.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
475 *
a5526908f92f Added javadoc in state package.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
476 * @param locale Locale to use.
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
477 * @param key The key of the message.
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
478 * @param value The default value.
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
479 * @return The value.
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parents: 780
diff changeset
480 */
335
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parents:
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481 protected String getMessage(Locale locale, String key, String value) {
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parents:
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482 return RessourceFactory.getInstance().getRessource(
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Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
483 locale,
e964a3d8f7bc Some Refactoring work done.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
484 key,
e964a3d8f7bc Some Refactoring work done.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
485 value
e964a3d8f7bc Some Refactoring work done.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
486 );
e964a3d8f7bc Some Refactoring work done.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
487 }
e964a3d8f7bc Some Refactoring work done.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
488 }
796
a5526908f92f Added javadoc in state package.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 780
diff changeset
489 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org