Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/LocationSelect.java @ 1058:c37084f31c84

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Implemented a MapInfo service that returns some basic information to create maps for specific rivers. flys-artifacts/trunk@2528 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 23 Aug 2011 07:53:41 +0000
parents eccf966fb677
children 853cd2120d69
rev   line source
383
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1 package de.intevation.flys.artifacts.states;
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2
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3 import gnu.trove.TDoubleArrayList;
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4
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5 import org.apache.log4j.Logger;
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6
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7 import org.w3c.dom.Element;
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8
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9 import de.intevation.artifacts.Artifact;
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10 import de.intevation.artifacts.CallContext;
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11
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12 import de.intevation.artifacts.common.utils.XMLUtils;
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13
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14 import de.intevation.artifactdatabase.data.StateData;
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15
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16 import de.intevation.flys.artifacts.FLYSArtifact;
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18
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19 /**
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20 * This state is used to realize the input of multiple locations as string. The
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21 * string should be a whitespace separated list of double values where each
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22 * double value represents a location.
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23 *
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24 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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25 */
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26 public class LocationSelect extends LocationDistanceSelect {
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27
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28 /** The logger used in this class.*/
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29 private static Logger logger = Logger.getLogger(LocationSelect.class);
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30
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31
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32 /** The name of the StateData object that stores the location string.*/
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33 public static final String FIELD_LOCATIONS = "ld_locations";
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34
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35
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36 public LocationSelect() {
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37 }
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39
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40 @Override
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41 protected String getUIProvider() {
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42 return "location_panel";
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43 }
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46 @Override
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47 protected Element[] createItems(
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48 XMLUtils.ElementCreator cr,
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49 Artifact artifact,
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50 String name,
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51 CallContext context)
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52 {
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53 double[] minmax = getMinMax(artifact);
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54
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55 double minVal = Double.MIN_VALUE;
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56 double maxVal = Double.MAX_VALUE;
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57
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58 if (minmax != null) {
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59 minVal = minmax[0];
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60 maxVal = minmax[1];
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61 }
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62 else {
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63 logger.warn("Could not read min/max distance values!");
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64 }
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65
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66 if (name.equals(FIELD_LOCATIONS)) {
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67 Element min = createItem(
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68 cr,
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69 new String[] {"min", new Double(minVal).toString()});
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70
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71 Element max = createItem(
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72 cr,
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73 new String[] {"max", new Double(maxVal).toString()});
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74
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75 return new Element[] { min, max };
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76 }
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77
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78 return null;
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79 }
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82 @Override
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83 public boolean validate(Artifact artifact)
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84 throws IllegalArgumentException
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85 {
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86 logger.debug("LocationSelect.validate");
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87
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88 FLYSArtifact flys = (FLYSArtifact) artifact;
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89 StateData data = getData(flys, FIELD_LOCATIONS);
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90
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91 String locationStr = data != null ? (String) data.getValue() : null;
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92
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93 if (locationStr == null || locationStr.length() == 0) {
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94 logger.error("No locations given.");
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95 throw new IllegalArgumentException("error_empty_state");
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96 }
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97
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98 double[] minmax = getMinMax(artifact);
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99 double[] mm = extractLocations(locationStr);
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100
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101 logger.debug("Inserted min location: " + mm[0]);
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102 logger.debug("Inserted max location: " + mm[mm.length-1]);
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103
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104 return validateBounds(minmax[0], minmax[1], mm[0], mm[mm.length-1], 0d);
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105 }
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106
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107
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108 /**
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109 * This method takes a string that consist of whitespace separated double
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110 * values and returns the double values as array.
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111 *
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112 * @param locationStr The locations inserted in this state.
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113 *
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114 * @return the locations as array.
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115 */
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116 protected double[] extractLocations(String locationStr) {
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117 String[] tmp = locationStr.split(" ");
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118 TDoubleArrayList locations = new TDoubleArrayList();
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119
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120 for (String l: tmp) {
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121 try {
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122 locations.add(Double.parseDouble(l));
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123 }
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124 catch (NumberFormatException nfe) {
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125 logger.warn(nfe, nfe);
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126 }
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127 }
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128
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129 locations.sort();
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130
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131 return locations.toNativeArray();
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132 }
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133 }
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134 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org