Mercurial > dive4elements > river
annotate flys-backend/src/main/java/de/intevation/flys/model/Wst.java @ 757:c19d4c643526
River: add method to find gauge by its station position.
flys-backend/trunk@2090 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Wed, 08 Jun 2011 19:03:44 +0000 |
parents | 9aa0eddc5221 |
children | f834b411ca57 |
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 import java.math.BigDecimal; |
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5 import java.util.List; |
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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 import javax.persistence.OneToMany; |
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17 |
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18 import org.apache.log4j.Logger; |
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19 |
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20 import org.hibernate.Session; |
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21 import org.hibernate.Query; |
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22 |
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23 import de.intevation.flys.backend.SessionHolder; |
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24 |
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25 |
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26 @Entity |
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27 @Table(name = "wsts") |
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28 public class Wst |
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29 implements Serializable |
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30 { |
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31 private static Logger logger = Logger.getLogger(Wst.class); |
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32 |
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33 private Integer id; |
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34 private River river; |
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35 private String description; |
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36 private Integer kind; |
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37 |
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38 private List<WstColumn> columns; |
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39 |
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40 public Wst() { |
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41 } |
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42 |
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43 public Wst(River river, String description) { |
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44 this(river, description, 0); |
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45 } |
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46 |
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47 public Wst(River river, String description, Integer kind) { |
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48 this.river = river; |
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49 this.description = description; |
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50 this.kind = kind; |
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51 } |
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52 |
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53 @Id |
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54 @SequenceGenerator( |
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55 name = "SEQUENCE_WSTS_ID_SEQ", |
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56 sequenceName = "WSTS_ID_SEQ", |
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57 allocationSize = 1) |
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58 @GeneratedValue( |
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59 strategy = GenerationType.SEQUENCE, |
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60 generator = "SEQUENCE_WSTS_ID_SEQ") |
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61 @Column(name = "id") |
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62 public Integer getId() { |
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63 return id; |
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64 } |
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65 |
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66 public void setId(Integer id) { |
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67 this.id = id; |
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68 } |
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69 |
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70 @OneToOne |
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71 @JoinColumn(name = "river_id" ) |
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72 public River getRiver() { |
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73 return river; |
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74 } |
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75 |
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76 public void setRiver(River river) { |
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77 this.river = river; |
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78 } |
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79 |
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80 @Column(name = "description") |
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81 public String getDescription() { |
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82 return description; |
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83 } |
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84 |
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85 public void setDescription(String description) { |
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86 this.description = description; |
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87 } |
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88 |
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89 @Column(name = "kind") |
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90 public Integer getKind() { |
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91 return kind; |
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92 } |
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93 |
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94 public void setKind(Integer kind) { |
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95 this.kind = kind; |
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96 } |
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97 |
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98 @OneToMany |
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99 @JoinColumn(name="wst_id") |
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100 public List<WstColumn> getColumns() { |
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101 return columns; |
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102 } |
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103 |
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104 public void setColumns(List<WstColumn> columns) { |
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105 this.columns = columns; |
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106 } |
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107 |
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108 /** |
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109 * Determines the min and max Q values of this WST. The min value is placed |
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110 * in the first field of the resulting array - the max value is placed in |
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111 * the second field. |
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112 * |
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113 * @return the min and max Q values of this WST. |
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114 */ |
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115 public double[] determineMinMaxQ() { |
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116 double[] ab = river.determineMinMaxDistance(); |
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117 return determineMinMaxQ(new Range(ab[0], ab[1], river)); |
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118 } |
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119 |
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120 |
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121 /** |
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122 * Determines the min and max Q values of this WST in the given range. The |
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123 * min value is placed in the first field of the resulting array - the max |
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124 * value is placed in the second field. |
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125 * |
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126 * @param range The range used for querying the Q values. |
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127 * |
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128 * @return the min and max Q values of this WST. |
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129 */ |
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130 public double[] determineMinMaxQ(Range range) { |
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131 Session session = SessionHolder.HOLDER.get(); |
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132 |
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133 Query query = session.createQuery( |
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134 "select min(q), max(q) from WstQRange where " + |
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135 " id in " + |
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136 " (select wstQRange.id from WstColumnQRange where " + |
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137 " wstColumn.id in (select id from WstColumn where wst.id = :wst)) " + |
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138 " and range.id in " + |
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139 " (select id from Range where not (a > :end or b < :start))"); |
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140 |
469
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141 query.setParameter("wst", getId()); |
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142 query.setParameter("start", range.getA()); |
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143 query.setParameter("end", range.getB()); |
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144 |
469
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145 List<Object []> results = query.list(); |
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146 |
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147 if (results.isEmpty()) { |
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148 return null; |
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149 } |
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150 |
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151 Object [] result = results.get(0); |
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152 |
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153 return new double [] { |
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154 ((BigDecimal)result[0]).doubleValue(), |
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155 ((BigDecimal)result[1]).doubleValue() }; |
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156 } |
167
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157 } |
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158 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |