Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/model/River.java @ 465:c2c3ad4fda58

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Added a method to River that returns the min and max distance of the river. flys-backend/trunk@1698 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 14 Apr 2011 13:43:53 +0000
parents 003ac16812dd
children 1e196c75563b
rev   line source
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1 package de.intevation.flys.model;
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2
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3 import java.io.Serializable;
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4
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5 import java.math.BigDecimal;
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6
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7 import javax.persistence.Entity;
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8 import javax.persistence.Id;
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9 import javax.persistence.Table;
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10 import javax.persistence.GeneratedValue;
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11 import javax.persistence.Column;
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12 import javax.persistence.SequenceGenerator;
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13 import javax.persistence.OneToMany;
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14 import javax.persistence.JoinColumn;
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15 import javax.persistence.GenerationType;
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16
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17 import java.util.List;
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18
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19 @Entity
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20 @Table(name = "rivers")
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21 public class River
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22 implements Serializable
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23 {
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24 private Integer id;
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25
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26 private String name;
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27
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28 private List<Gauge> gauges;
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29
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30 @Id
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31 @SequenceGenerator(
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32 name = "SEQUENCE_RIVERS_ID_SEQ",
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33 sequenceName = "RIVERS_ID_SEQ",
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34 allocationSize = 1)
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35 @GeneratedValue(
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36 strategy = GenerationType.SEQUENCE,
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37 generator = "SEQUENCE_RIVERS_ID_SEQ")
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38 @Column(name = "id")
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39 public Integer getId() {
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40 return id;
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41 }
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42
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43 public void setId(Integer id) {
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44 this.id = id;
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45 }
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46
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47 @Column(name = "name")
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48 public String getName() {
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49 return name;
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50 }
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51
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52 public void setName(String name) {
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53 this.name = name;
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54 }
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55
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56 public River() {
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57 }
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58
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59 public River(String name) {
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60 this.name = name;
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61 }
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62
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63 @OneToMany
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64 @JoinColumn(name="river_id")
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65 public List<Gauge> getGauges() {
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66 return gauges;
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67 }
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68
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69 public void setGauges(List<Gauge> gauges) {
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70 this.gauges = gauges;
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71 }
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72
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73 public String toString() {
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74 return name != null ? name : "";
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75 }
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76
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77 /**
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78 * Returns the min and max distance of this river. The first position in the
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79 * resulting array contains the min distance, the second position the max
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80 * distance.
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81 *
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82 * @return the min and max distance of this river.
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83 */
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84 public double[] determineMinMaxDistance() {
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85 if (gauges == null) {
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86 return null;
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87 }
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88
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89 double minmax[] = new double[] { Double.MAX_VALUE, Double.MIN_VALUE };
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90
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91 for (Gauge g: gauges) {
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92 Range r = g.getRange();
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93
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94 double a = r.getA().doubleValue();
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95 minmax[0] = minmax[0] < a ? minmax[0] : a;
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96
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97 BigDecimal bigB = r.getB();
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98 if (bigB != null) {
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99 double b = bigB.doubleValue();
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100 minmax[1] = minmax[1] > b ? minmax[1] : b;
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101 }
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102 }
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103
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104 return minmax;
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105 }
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106 }
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107 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org