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annotate gwt-client/src/main/java/org/dive4elements/river/client/client/ui/sinfo/WaterlevelSoundingYearFilter.java @ 9231:082e8e808902

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Finetuning intelligent waterlevel-sounding select. Soundings without year are never shown. All involed datacage elements are assumed to have a 'year' attribute
author gernotbelger
date Fri, 06 Jul 2018 13:09:25 +0200
parents 84397da33d17
children 83ef08b5e1ac
rev   line source
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1 /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by
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3 * Björnsen Beratende Ingenieure GmbH
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4 * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
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5 *
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6 * This file is Free Software under the GNU AGPL (>=v3)
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7 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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8 * documentation coming with Dive4Elements River for details.
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9 */
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10 package org.dive4elements.river.client.client.ui.sinfo;
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11
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12 import org.dive4elements.river.client.client.ui.DatacageWidget.DatacageFilter;
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13 import org.dive4elements.river.client.shared.model.AttrList;
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14 import org.dive4elements.river.client.shared.model.DataCageNode;
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15
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16 /**
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17 * @author Gernot Belger
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18 */
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19 final class WaterlevelSoundingYearFilter implements DatacageFilter {
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20
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21 private final int soundingYear;
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22
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23 public WaterlevelSoundingYearFilter(final int soundingYear) {
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24 this.soundingYear = soundingYear;
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25 }
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26
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27 @Override
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28 public boolean accept(final DataCageNode node) {
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29
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30 final AttrList attributes = node.getAttributes();
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31
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32 if (isFolder(attributes))
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33 return true;
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34
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35 final String year = attributes.getValue(WaterlevelSoundingSelectionController.ATTRIBUTE_YEAR);
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36 final Integer waterlevelYear = parseYear(year);
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37 if (waterlevelYear == null) {
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38 // should never happen, we should only show waterlevels that have a year
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39 return false;
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40 }
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41
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42 final int diff = Math.abs(this.soundingYear - waterlevelYear);
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43
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44 return diff <= getMaxYearDifference();
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45 }
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46
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47 private int getMaxYearDifference() {
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48
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49 if (this.soundingYear < 1918)
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50 return 25;
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51
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52 if (1918 <= this.soundingYear && this.soundingYear < 1958)
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53 return 12;
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54
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55 if (1958 <= this.soundingYear && this.soundingYear < 1998)
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56 return 6;
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57
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58 // > 1998
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59 return 3;
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60 }
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61
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62 static Integer parseYear(final String year) {
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63
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64 if (year == null || year.trim().isEmpty())
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65 return null;
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66
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67 try {
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68 return Integer.valueOf(year);
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69 }
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70 catch (final NumberFormatException e) {
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71 e.printStackTrace();
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72 return null;
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73 }
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74 }
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75
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76 static boolean isFolder(final AttrList attributes) {
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77 if (attributes == null)
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78 return true;
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79
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80 if (!attributes.hasAttribute("factory"))
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81 return true;
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82
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83 return false;
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84 }
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85 }
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