Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/utils/FLYSUtils.java @ 1099:af73f196eccc

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Refactored to use new FLYSUtils, moved getRiver-functionality inside. flys-artifacts/trunk@2602 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Mon, 29 Aug 2011 09:01:40 +0000
parents f465785ed1ae
children adb52a2005e7
rev   line source
1095
f465785ed1ae Refactored the code to fetch the km range/locations into a utility class.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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1 package de.intevation.flys.utils;
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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 de.intevation.flys.artifacts.FLYSArtifact;
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6 import de.intevation.flys.artifacts.model.RiverFactory;
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7 import de.intevation.flys.model.River;
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8
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9 public class FLYSUtils {
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10
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11 public static enum KM_MODE { RANGE, LOCATIONS, NONE };
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12
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13
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14 private FLYSUtils() {
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15 }
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16
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17
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18 public static KM_MODE getKmRangeMode(FLYSArtifact flys) {
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19 String mode = flys.getDataAsString("ld_mode");
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20
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21 if (mode == null || mode.length() == 0) {
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22 return KM_MODE.NONE;
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23 }
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24 else if (mode.equals("distance")) {
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25 return KM_MODE.RANGE;
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26 }
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27 else if (mode.equals("locations")) {
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28 return KM_MODE.LOCATIONS;
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29 }
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30 else {
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31 return KM_MODE.NONE;
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32 }
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33 }
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34
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35
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36 public static double[] getKmRange(FLYSArtifact flys) {
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37 switch (getKmRangeMode(flys)) {
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38 case RANGE: {
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39 return getKmFromTo(flys);
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40 }
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41
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42 case LOCATIONS: {
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43 double[] locs = getLocations(flys);
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44 return new double[] { locs[0], locs[locs.length-1] };
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45 }
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46
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47 case NONE: {
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48 double[] locs = getLocations(flys);
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49 if (locs != null) {
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50 return new double[] { locs[0], locs[locs.length-1] };
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51 }
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52 else {
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53 return getKmFromTo(flys);
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54 }
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55 }
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56 }
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57
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58 return new double[] { Double.NaN, Double.NaN };
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59 }
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60
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61
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62 public static double[] getKmFromTo(FLYSArtifact flys) {
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63 String strFrom = flys.getDataAsString("ld_from");
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64 String strTo = flys.getDataAsString("ld_to");
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65
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66 if (strFrom == null || strTo == null) {
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67 return null;
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68 }
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69
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70 try {
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71 return new double[] {
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72 Double.parseDouble(strFrom),
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73 Double.parseDouble(strTo) };
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74 }
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75 catch (NumberFormatException nfe) {
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76 return null;
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77 }
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78 }
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79
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80
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81 public static double[] getLocations(FLYSArtifact flys) {
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82 String locationStr = flys.getDataAsString("ld_locations");
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83
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84 if (locationStr == null || locationStr.length() == 0) {
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85 return null;
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86 }
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87
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88 String[] tmp = locationStr.split(" ");
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89 TDoubleArrayList locations = new TDoubleArrayList();
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90
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91 for (String l: tmp) {
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92 try {
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93 locations.add(Double.parseDouble(l));
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94 }
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95 catch (NumberFormatException nfe) {
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96 }
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97 }
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98
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99 locations.sort();
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100
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101 return locations.toNativeArray();
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102 }
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103
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104
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105 /**
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106 * Returns the selected River object based on the 'river' data that might
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107 * have been inserted by the user.
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108 *
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109 * @return the selected River or null if no river has been chosen yet.
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110 */
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111 public static River getRiver(FLYSArtifact flys) {
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112 String sRiver = flys.getDataAsString("river");
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113
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114 return (sRiver != null)
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115 ? RiverFactory.getRiver(sRiver)
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116 : null;
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117 }
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118 }
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