Mercurial > dive4elements > river
comparison flys-backend/src/main/java/de/intevation/flys/model/River.java @ 2383:6605dcd6745f
Added a method to build a map from gauge stations to the datums of the gauges.
flys-backend/trunk@3907 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Fri, 03 Feb 2012 15:25:18 +0000 |
| parents | 056b3a5aa181 |
| children | 385170ff7b34 |
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| 2382:c5791de0c495 | 2383:6605dcd6745f |
|---|---|
| 15 import javax.persistence.OneToOne; | 15 import javax.persistence.OneToOne; |
| 16 import javax.persistence.JoinColumn; | 16 import javax.persistence.JoinColumn; |
| 17 import javax.persistence.GenerationType; | 17 import javax.persistence.GenerationType; |
| 18 | 18 |
| 19 import java.util.List; | 19 import java.util.List; |
| 20 import java.util.Comparator; | |
| 21 import java.util.Map; | |
| 22 import java.util.TreeMap; | |
| 20 | 23 |
| 21 import org.hibernate.Session; | 24 import org.hibernate.Session; |
| 22 import org.hibernate.Query; | 25 import org.hibernate.Query; |
| 23 | 26 |
| 24 import de.intevation.flys.backend.SessionHolder; | 27 import de.intevation.flys.backend.SessionHolder; |
| 28 @Table(name = "rivers") | 31 @Table(name = "rivers") |
| 29 public class River | 32 public class River |
| 30 implements Serializable | 33 implements Serializable |
| 31 { | 34 { |
| 32 public static final MathContext PRECISION = new MathContext(6); | 35 public static final MathContext PRECISION = new MathContext(6); |
| 36 | |
| 37 public static final double EPSILON = 1e-5; | |
| 38 | |
| 39 public static final Comparator KM_CMP = new Comparator<Double>() { | |
| 40 @Override | |
| 41 public int compare(Double a, Double b) { | |
| 42 double diff = a - b; | |
| 43 if (diff < -EPSILON) return -1; | |
| 44 if (diff > EPSILON) return +1; | |
| 45 return 0; | |
| 46 } | |
| 47 }; | |
| 33 | 48 |
| 34 private Integer id; | 49 private Integer id; |
| 35 | 50 |
| 36 private String name; | 51 private String name; |
| 37 | 52 |
| 256 } | 271 } |
| 257 } | 272 } |
| 258 | 273 |
| 259 return minmax; | 274 return minmax; |
| 260 } | 275 } |
| 276 | |
| 277 public Map<Double, Double> getGaugeDatumsKMs() { | |
| 278 List<Gauge> gauges = getGauges(); | |
| 279 Map result = new TreeMap<Double, Double>(KM_CMP); | |
| 280 | |
| 281 for (Gauge gauge: gauges) { | |
| 282 BigDecimal km = gauge.getStation(); | |
| 283 BigDecimal datum = gauge.getDatum(); | |
| 284 if (km != null && datum != null) { | |
| 285 result.put(km.doubleValue(), datum.doubleValue()); | |
| 286 } | |
| 287 } | |
| 288 | |
| 289 return result; | |
| 290 } | |
| 261 } | 291 } |
| 262 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : | 292 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |