Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/GaugeTimerangeState.java @ 3745:e86cd5176678

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Check to prevent NPE flys-artifacts/trunk@5429 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Christian Lins <christian.lins@intevation.de>
date Mon, 10 Sep 2012 20:32:39 +0000
parents 2966787b5188
children f6c73ee1b7f1
rev   line source
2191
f28844a57fed Added states (work is not finished yet) for the 'historical discharge curve' calculation.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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1 package de.intevation.flys.artifacts.states;
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2
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3 import java.util.Calendar;
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4 import java.util.List;
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5
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6 import org.apache.log4j.Logger;
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7 import org.hibernate.SQLQuery;
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8 import org.hibernate.Session;
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9 import org.hibernate.type.StandardBasicTypes;
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10
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11 import de.intevation.flys.artifacts.FLYSArtifact;
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12 import de.intevation.flys.backend.SessionHolder;
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13 import de.intevation.flys.model.Gauge;
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14 import de.intevation.flys.utils.FLYSUtils;
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15
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16
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17 /**
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18 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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19 */
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20 public class GaugeTimerangeState extends IntRangeState {
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21
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22 private static final Logger logger =
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23 Logger.getLogger(GaugeTimerangeState.class);
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24
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25
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26 protected int[] getLowerUpper(FLYSArtifact flys) {
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27 Gauge gauge = FLYSUtils.getReferenceGauge(flys);
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28
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29 if (gauge == null) {
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30 logger.warn("No reference gauge specified!");
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31 return new int[] { 0, 0 };
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32 }
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33
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34 Session session = SessionHolder.HOLDER.get();
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35
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36 SQLQuery query = session.createSQLQuery(
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37 "SELECT min(start_time) as min, max(stop_time) as max " +
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38 "FROM time_intervals WHERE id in " +
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39 "(SELECT time_interval_id FROM discharge_tables " +
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40 "WHERE gauge_id =:gid)");
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41
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42 query.addScalar("min", StandardBasicTypes.CALENDAR);
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43 query.addScalar("max", StandardBasicTypes.CALENDAR);
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44
f28844a57fed Added states (work is not finished yet) for the 'historical discharge curve' calculation.
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45 query.setInteger("gid", gauge.getId());
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46
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47 List<?> results = query.list();
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48
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49 if (results != null) {
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50 Object[] res = (Object[]) results.get(0);
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51
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52 Calendar lo = (Calendar) res[0];
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53 Calendar up = (Calendar) res[1];
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54
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55 if (lo != null && up != null) {
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56 return new int[] { lo.get(Calendar.YEAR), up.get(Calendar.YEAR) };
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57 }
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58 }
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59
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60 logger.warn("Could not determine time range for gauge: " + gauge);
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61
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62 return null;
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63 }
f28844a57fed Added states (work is not finished yet) for the 'historical discharge curve' calculation.
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64
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65
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66 @Override
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67 protected Object getLower(FLYSArtifact flys) {
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68 int[] lowerUpper = getLowerUpper(flys);
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69
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70 return lowerUpper != null ? lowerUpper[0] : 0;
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71 }
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72
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73
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74 @Override
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75 protected Object getUpper(FLYSArtifact flys) {
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76 int[] lowerUpper = getLowerUpper(flys);
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77
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78 return lowerUpper != null ? lowerUpper[1] : 0;
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79 }
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2966787b5188 Added service for discharge infos at a specific gauge.
Raimund Renkert <raimund.renkert@intevation.de>
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80
2966787b5188 Added service for discharge infos at a specific gauge.
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81
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82 @Override
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83 protected String getUIProvider() {
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84 return "gaugetimerange";
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85 }
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86 }
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87 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org