Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/model/Range.java @ 5614:15476d76b6f9

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Remove uneccessary complication fixpoints are always fixpoints
author Andre Heinecke <aheinecke@intevation.de>
date Tue, 09 Apr 2013 16:31:05 +0200
parents 7b1c5fe4ebf3
children 80b9218ac007
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.GenerationType;
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14 import javax.persistence.JoinColumn;
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15 import javax.persistence.OneToOne;
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16
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17 @Entity
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18 @Table(name = "ranges")
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19 public class Range
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20 implements Serializable
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21 {
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22 private Integer id;
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23 private BigDecimal a;
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24 private BigDecimal b;
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25
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26 private River river;
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27
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28 public Range() {
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29 }
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30
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31 public Range(double a, double b, River river) {
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32 this(new BigDecimal(a), new BigDecimal(b), river);
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33 }
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34
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35 public Range(BigDecimal a, BigDecimal b, River river) {
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36 this.a = a;
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37 this.b = b;
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38 this.river = river;
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39 }
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40
171
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41 @Id
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42 @SequenceGenerator(
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43 name = "SEQUENCE_RANGES_ID_SEQ",
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44 sequenceName = "RANGES_ID_SEQ",
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45 allocationSize = 1)
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46 @GeneratedValue(
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47 strategy = GenerationType.SEQUENCE,
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48 generator = "SEQUENCE_RANGES_ID_SEQ")
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49 @Column(name = "id")
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50 public Integer getId() {
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51 return id;
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52 }
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53
168
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54 public void setId(Integer id) {
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55 this.id = id;
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56 }
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57
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58 @Column(name = "a") // FIXME: type mapping needed?
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59 public BigDecimal getA() {
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60 return a;
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61 }
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62
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63 public void setA(BigDecimal a) {
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64 this.a = a;
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65 }
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66
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67 @Column(name = "b") // FIXME: type mapping needed?
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68 public BigDecimal getB() {
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69 return b;
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70 }
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71
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72 public void setB(BigDecimal b) {
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73 this.b = b;
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74 }
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75
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76 public boolean contains(double x) {
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77 BigDecimal b = this.b != null ? this.b : a;
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78 double av = a.doubleValue();
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79 double bv = b.doubleValue();
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80 if (av > bv) {
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81 double t = av;
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82 av = bv;
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83 bv = t;
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84 }
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85 return x >= av && x <= bv;
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86 }
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87
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88 @OneToOne
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89 @JoinColumn(name = "river_id")
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90 public River getRiver() {
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91 return river;
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92 }
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93
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94 public void setRiver(River river) {
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95 this.river = river;
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96 }
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97
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98 public int code() {
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99 int code = 0;
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100 if (a != null) code = 1;
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101 if (b != null) code |= 2;
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102 return code;
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103 }
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104
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105 public boolean intersects(BigDecimal c) {
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106 return !(a.compareTo(c) > 0 || b.compareTo(c) < 0);
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107 }
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108
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109 public boolean intersects(Range other) {
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110
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111 int code = code();
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112 int ocode = other.code();
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113
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114 if (code == 0 || ocode == 0) {
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115 return false;
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116 }
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117
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118 switch (code) {
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119 case 1: // has a
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120 switch (ocode) {
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121 case 1: // has a
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122 return a.compareTo(other.a) == 0;
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123 case 2: // has b
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124 return a.compareTo(other.b) == 0;
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125 case 3: // has range
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126 return other.intersects(a);
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127 }
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128 break;
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129 case 2: // has b
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130 switch (ocode) {
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131 case 1: // has a
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132 return b.compareTo(other.a) == 0;
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133 case 2: // has b
205
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134 return b.compareTo(other.b) == 0;
204
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135 case 3: // has range
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136 return other.intersects(b);
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137 }
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138 break;
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139 case 3: // has range
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140 switch (ocode) {
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141 case 1: // has a
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142 return intersects(other.a);
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143 case 2: // has b
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144 return intersects(other.b);
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145 case 3: // has range
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146 return !(other.b.compareTo(a) < 0
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147 ||other.a.compareTo(b) > 0);
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148 }
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149 break;
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150
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151 }
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152
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153 return false;
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154 }
167
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155 }
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156 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org