Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/GaugesFactory.java @ 6152:0587819960c3
Waterlevel differences & bed height differences: Add new model LinearInterpolated intented to unify the two very similiar calculations. The focus of the current implementation is correctness and not speed! The fact that the data sets more mostly sorted by station is not exploited. Doing so would improve performance significantly.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Sun, 02 Jun 2013 17:52:53 +0200 |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.artifacts.model; |
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10 |
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11 import java.util.List; |
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12 import java.util.ArrayList; |
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13 |
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14 import org.dive4elements.river.backend.SessionHolder; |
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15 import org.dive4elements.river.model.River; |
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16 import org.dive4elements.river.model.Gauge; |
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17 import org.dive4elements.river.model.Range; |
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18 |
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19 import org.hibernate.Session; |
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20 import org.hibernate.Query; |
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21 |
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22 public class GaugesFactory |
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23 { |
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24 public static List<Gauge> getGauges(River river) { |
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25 return getGauges(river.getName()); |
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26 } |
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27 |
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28 |
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29 public static Gauge getGauge(String gaugeName) { |
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30 Session session = SessionHolder.HOLDER.get(); |
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31 Query query = session.createQuery( |
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32 "from Gauge where name=:name"); |
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33 query.setParameter("name", gaugeName); |
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34 |
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35 List<Gauge> res = query.list(); |
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36 |
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37 return res.isEmpty() ? null : res.get(0); |
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38 } |
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39 |
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40 |
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41 public static List<Gauge> getGauges(String river) { |
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42 Session session = SessionHolder.HOLDER.get(); |
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43 Query query = session.createQuery( |
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44 "from Gauge where river.name=:name"); |
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45 query.setParameter("name", river); |
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46 return query.list(); |
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47 } |
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48 |
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49 public static List<Gauge> filterRanges( |
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50 List<Gauge> gauges, |
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51 List<double []> ranges |
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52 ) { |
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53 // XXX: Inefficent! |
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54 ArrayList<Range> rs = new ArrayList<Range>(); |
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55 for (double [] range: ranges) { |
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56 double a = range[0]; |
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57 double b = range[1]; |
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58 rs.add(new Range(Math.min(a, b), Math.max(a, b), null)); |
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59 } |
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60 return filter(gauges, rs); |
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61 } |
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62 |
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63 public static List<Gauge> filter(List<Gauge> gauges, List<Range> ranges) { |
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64 // TODO: Make it an HQL filter! |
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65 ArrayList<Gauge> out = new ArrayList<Gauge>(); |
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66 for (Gauge gauge: gauges) { |
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67 Range range = gauge.getRange(); |
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68 for (Range cmp: ranges) { |
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69 if (range.intersects(cmp)) { |
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70 out.add(gauge); |
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71 break; |
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72 } |
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73 } |
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74 } |
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75 return out; |
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76 } |
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77 } |
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78 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |