Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/CoordinateSelectionState.java @ 795:cdade5005cba

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Added javadoc in jfreechart package. gnv-artifacts/trunk@877 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 31 Mar 2010 13:48:07 +0000
parents c4156275c1e1
children a5526908f92f
rev   line source
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1 package de.intevation.gnv.state;
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2
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3 import com.vividsolutions.jts.geom.Point;
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5 import de.intevation.artifactdatabase.Config;
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7 import de.intevation.gnv.geobackend.base.Result;
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9 import de.intevation.gnv.state.describedata.DefaultKeyValueDescribeData;
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10 import de.intevation.gnv.state.describedata.KeyValueDescibeData;
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11 import de.intevation.gnv.state.describedata.NamedArrayList;
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12 import de.intevation.gnv.state.describedata.NamedCollection;
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14 import de.intevation.gnv.utils.ArtifactXMLUtilities;
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15 import de.intevation.gnv.utils.InputValidator;
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16 import de.intevation.gnv.utils.WKTUtils;
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18 import de.intevation.gnv.utils.exception.ValidationException;
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19
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20 import java.util.ArrayList;
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21 import java.util.Collection;
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22 import java.util.HashMap;
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23 import java.util.Iterator;
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24 import java.util.List;
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26 import org.apache.log4j.Logger;
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27
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28 import org.w3c.dom.Element;
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29 import org.w3c.dom.Node;
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30 import org.w3c.dom.NodeList;
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31
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32 /**
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33 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
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34 *
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35 */
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36 public class CoordinateSelectionState extends StateBase {
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37
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38 /**
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39 * the logger, used to log exceptions and additonaly information
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40 */
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41 private static Logger log = Logger.getLogger(CoordinateSelectionState.class);
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42
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43 /**
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44 * The UID of this Class
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45 */
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46 private static final long serialVersionUID = 6318923553625195063L;
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47
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48 /**
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49 * XPATH Expressions for the setup.
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50 */
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51
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52 private final static String MESH_WIDTH_XPATH = "mesh-width";
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53 private final static String XLINK_XPATH = "xlink:href";
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54 private final static String MESH_LIST_XPATH = "/mesh-widths/mesh";
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55 private final static String ID_XPATH = "id";
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56 private final static String WIDTH_VALUE_XPATH = "width";
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57
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58 /**
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59 * Holds all given Widths between two MeshPoints for different Meshes.
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60 */
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61 private HashMap<String, Double> meshWidths = null;
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62
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63 /**
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64 * Constructor
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65 */
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66 public CoordinateSelectionState() {
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67 super();
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68 }
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69
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70 @Override
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71 protected List<Object> purifyResult(Collection<Result> result, String uuid) {
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72 log.debug("CoordinateSelectionState.purifyResult");
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73 List<Object> describeData = new ArrayList<Object>();
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74
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75 NamedCollection<KeyValueDescibeData> keyValueDescibeData =
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76 extractKVP(result, "FEATUREID", "SHAPE");
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77
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78 describeData.add(keyValueDescibeData);
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79 return describeData;
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80 }
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81
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82 /**
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83 * @see de.intevation.gnv.state.StateBase#prepareInputData4RegionDBQuery(java.lang.String)
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84 */
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85 @Override
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86 protected String prepareInputData4RegionDBQuery(String value) {
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87 log.debug("CoordinateSelectionState.prepareInputData4RegionDBQuery");
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88 double distance=0.;
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89 String returnValue = null;
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90 try {
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91 Point center = new InputValidator().getPointValue(value);
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92 String meshId = super.inputData.get("meshid").getValue();
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93 int segments = 97;
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94 if (meshWidths != null){
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95 Double distanceValue = this.meshWidths.get(meshId);
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96 if (distanceValue != null){
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97 log.debug("User "+distanceValue+" as Buffer around given Point");
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98 distance = distanceValue.doubleValue();
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99 }else{
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100 log.warn("No distance is configured for Mesh with id"+ meshId);
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101 }
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102 }else{
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103 log.warn("No MeshWidth configured. Check if this is correct.");
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104 }
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105 returnValue = center.buffer(distance,segments).toText();
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106 } catch (NumberFormatException e) {
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107 log.error(e,e);
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108 } catch (ValidationException e) {
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109 log.error(e,e);
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110 }
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111 return returnValue;
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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 * @see de.intevation.gnv.state.StateBase#extractKVP(java.util.Collection, java.lang.String, java.lang.String)
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117 */
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118 @Override
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119 protected NamedCollection<KeyValueDescibeData> extractKVP(
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120 Collection<Result> result,
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121 String keyid,
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122 String valueid) {
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123 Iterator<Result> rit = result.iterator();
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124 NamedCollection<KeyValueDescibeData> keyValueDescibeData = new NamedArrayList<KeyValueDescibeData>(
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125 this.dataName, result.size());
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126 keyValueDescibeData.setMultiSelect(this.dataMultiSelect);
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127 String prevKey = null;
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128 while (rit.hasNext()) {
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129 Result resultValue = rit.next();
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130 String key = resultValue.getString(keyid);
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131 if(prevKey == null || !prevKey.equals(key)){ // TODO: FIXME: We have to do that because the arcsde does not support a distinct Query on Layers
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132 String geomString = this.convert2DisplayCoordinate(resultValue.getString(valueid));
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133 String value = geomString;
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134 if (resultValue.getResultDescriptor().getColumnIndex("VALUE") > 0){
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135 value = resultValue.getString("VALUE") + " - "+value;
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136 }
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137
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138
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139 keyValueDescibeData.add(new DefaultKeyValueDescribeData(key,value ));
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140 }
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141 prevKey = key;
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142 }
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143 return keyValueDescibeData;
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144 }
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145
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146 protected static String convert2DisplayCoordinate(String wkt){
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147 return WKTUtils.toText(wkt);
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148 }
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149
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150 /**
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151 * @see de.intevation.gnv.state.StateBase#setup(org.w3c.dom.Node)
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152 */
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153 @Override
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154 public void setup(Node configuration) {
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155 super.setup(configuration);
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156 Element widthElement = (Element)Config.getNodeXPath(configuration, MESH_WIDTH_XPATH);
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157
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158 if (widthElement != null){
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159 String fileName = widthElement.getAttribute(XLINK_XPATH);
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160 fileName = Config.replaceConfigDir(fileName);
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161 Node configurationNode = new ArtifactXMLUtilities().readConfiguration(fileName);
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162 NodeList meshNodes = Config.getNodeSetXPath(configurationNode,MESH_LIST_XPATH );
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163 if (meshNodes != null){
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164 meshWidths = new HashMap<String, Double>(meshNodes.getLength());
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165 for (int i = 0; i < meshNodes.getLength(); i++){
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166 Element meshNode = (Element)meshNodes.item(i);
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167 String id = meshNode.getAttribute(ID_XPATH);
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168 Double value = Double.parseDouble(meshNode.getAttribute(WIDTH_VALUE_XPATH));
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169 meshWidths.put(id, value);
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170 }
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171 }
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172 }else{
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173 log.warn("No Mesh Width defined.");
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174 }
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175 }
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176 }
http://dive4elements.wald.intevation.org