Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/CoordinateSelectionState.java @ 605:e8ebdbc7f1e3

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First step of removing the cache blob. The static part of the describe document will be created by using the input data stored at each state. Some TODOs left (see ChangeLog). gnv-artifacts/trunk@671 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 09 Feb 2010 14:27:55 +0000
parents c5ed4ea8fb64
children 292fbcd5e9ac
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.util.ArrayList;
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7 import java.util.Collection;
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8 import java.util.HashMap;
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9 import java.util.Iterator;
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10 import java.util.List;
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11
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12 import org.apache.log4j.Logger;
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13 import org.w3c.dom.Element;
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14 import org.w3c.dom.Node;
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15 import org.w3c.dom.NodeList;
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16
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17 import com.vividsolutions.jts.geom.Point;
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18
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19 import de.intevation.artifactdatabase.Config;
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20 import de.intevation.gnv.geobackend.base.Result;
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21 import de.intevation.gnv.state.describedata.DefaultKeyValueDescribeData;
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22 import de.intevation.gnv.state.describedata.KeyValueDescibeData;
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23 import de.intevation.gnv.state.describedata.NamedArrayList;
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24 import de.intevation.gnv.state.describedata.NamedCollection;
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25 import de.intevation.gnv.utils.ArtifactXMLUtilities;
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26 import de.intevation.gnv.utils.InputValidator;
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27 import de.intevation.gnv.utils.WKTUtils;
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28 import de.intevation.gnv.utils.exception.ValidationException;
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29
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30 /**
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31 * @author Tim Englich <tim.englich@intevation.de>
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32 *
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33 */
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34 public class CoordinateSelectionState extends StateBase {
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35
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36 /**
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37 * the logger, used to log exceptions and additonaly information
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38 */
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39 private static Logger log = Logger.getLogger(CoordinateSelectionState.class);
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40
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41 /**
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42 * The UID of this Class
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43 */
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44 private static final long serialVersionUID = 6318923553625195063L;
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45
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46 /**
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47 * XPATH Expressions for the setup.
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48 */
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49
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50 private final static String MESH_WIDTH_XPATH = "mesh-width";
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51 private final static String XLINK_XPATH = "xlink:href";
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52 private final static String MESH_LIST_XPATH = "/mesh-widths/mesh";
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53 private final static String ID_XPATH = "id";
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54 private final static String WIDTH_VALUE_XPATH = "width";
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55
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56 /**
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57 * Holds all given Widths between two MeshPoints for different Meshes.
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58 */
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59 private HashMap<String, Double> meshWidths = null;
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60
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61 /**
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62 * Constructor
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63 */
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64 public CoordinateSelectionState() {
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65 super();
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66 }
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67
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68 @Override
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69 protected void purifyResult(Collection<Result> result, String uuid) {
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70 log.debug("CoordinateSelectionState.purifyResult");
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71 List<Object> describeData = this.getDescibeData(uuid);
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72 if (describeData == null) {
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73 describeData = new ArrayList<Object>();
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74 }
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75 NamedCollection<KeyValueDescibeData> keyValueDescibeData = this
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76 .extractKVP(result, "FEATUREID", "SHAPE");
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77 describeData.add(keyValueDescibeData);
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78 this.setDescibeData(uuid, describeData);
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79 }
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80
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81 /**
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82 * @see de.intevation.gnv.state.StateBase#prepareInputData4RegionDBQuery(java.lang.String)
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83 */
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84 @Override
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85 protected String prepareInputData4RegionDBQuery(String value) {
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86 log.debug("CoordinateSelectionState.prepareInputData4RegionDBQuery");
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87 double distance=0.;
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88 String returnValue = null;
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89 try {
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90 Point center = new InputValidator().getPointValue(value);
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91 String meshId = super.inputData.get("meshid").getValue();
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92 int segments = 97;
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93 if (meshWidths != null){
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94 Double distanceValue = this.meshWidths.get(meshId);
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95 if (distanceValue != null){
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96 log.debug("User "+distanceValue+" as Buffer around given Point");
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97 distance = distanceValue.doubleValue();
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98 }else{
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99 log.warn("No distance is configured for Mesh with id"+ meshId);
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100 }
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101 }else{
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102 log.warn("No MeshWidth configured. Check if this is correct.");
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103 }
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104 returnValue = center.buffer(distance,segments).toText();
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105 } catch (NumberFormatException e) {
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106 log.error(e,e);
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107 } catch (ValidationException e) {
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108 log.error(e,e);
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109 }
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110 return returnValue;
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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 * @see de.intevation.gnv.state.StateBase#extractKVP(java.util.Collection, java.lang.String, java.lang.String)
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116 */
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117 @Override
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118 protected NamedCollection<KeyValueDescibeData> extractKVP(
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119 Collection<Result> result,
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120 String keyid,
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121 String valueid) {
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122 Iterator<Result> rit = result.iterator();
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123 NamedCollection<KeyValueDescibeData> keyValueDescibeData = new NamedArrayList<KeyValueDescibeData>(
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124 this.dataName, result.size());
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125 keyValueDescibeData.setMultiSelect(this.dataMultiSelect);
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126 String prevKey = null;
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127 while (rit.hasNext()) {
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128 Result resultValue = rit.next();
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129 String key = resultValue.getString(keyid);
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130 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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131 String geomString = this.convert2DisplayCoordinate(resultValue.getString(valueid));
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132 String value = geomString;
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133 if (resultValue.getResultDescriptor().getColumnIndex("VALUE") > 0){
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134 value = resultValue.getString("VALUE") + " - "+value;
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135 }
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136
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137
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138 keyValueDescibeData.add(new DefaultKeyValueDescribeData(key,value ));
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139 }
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140 prevKey = key;
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141 }
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142 return keyValueDescibeData;
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143 }
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144
507
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145 protected static String convert2DisplayCoordinate(String wkt){
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146 return WKTUtils.toText(wkt);
335
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147 }
511
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148
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149 /**
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150 * @see de.intevation.gnv.state.StateBase#setup(org.w3c.dom.Node)
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151 */
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152 @Override
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153 public void setup(Node configuration) {
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154 super.setup(configuration);
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155 Element widthElement = (Element)Config.getNodeXPath(configuration, MESH_WIDTH_XPATH);
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156
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157 if (widthElement != null){
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158 String fileName = widthElement.getAttribute(XLINK_XPATH);
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159 fileName = Config.replaceConfigDir(fileName);
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160 Node configurationNode = new ArtifactXMLUtilities().readConfiguration(fileName);
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161 NodeList meshNodes = Config.getNodeSetXPath(configurationNode,MESH_LIST_XPATH );
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162 if (meshNodes != null){
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163 meshWidths = new HashMap<String, Double>(meshNodes.getLength());
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164 for (int i = 0; i < meshNodes.getLength(); i++){
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165 Element meshNode = (Element)meshNodes.item(i);
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166 String id = meshNode.getAttribute(ID_XPATH);
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167 Double value = Double.parseDouble(meshNode.getAttribute(WIDTH_VALUE_XPATH));
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168 meshWidths.put(id, value);
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169 }
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170 }
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171 }else{
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172 log.warn("No Mesh Width defined.");
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173 }
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174 }
335
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175 }
http://dive4elements.wald.intevation.org