Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/states/sq/SQPeriodSelect.java @ 8620:8737de2ca763

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Send default values for SQ Period selection to the client.
author Andre Heinecke <andre.heinecke@intevation.de>
date Wed, 25 Mar 2015 19:20:13 +0100
parents af13ceeba52a
children 1125e598df0e
rev   line source
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4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
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2 * Software engineering by Intevation GmbH
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Sascha L. Teichmann <teichmann@intevation.de>
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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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Sascha L. Teichmann <teichmann@intevation.de>
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9 package org.dive4elements.river.artifacts.states.sq;
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10
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11 import java.util.Date;
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12 import java.util.List;
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13 import java.util.Collections;
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14
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15 import org.apache.log4j.Logger;
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16
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17 import org.w3c.dom.Element;
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18
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19 import org.dive4elements.river.artifacts.states.PeriodsSelect;
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20 import org.dive4elements.river.artifacts.access.RangeAccess;
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21 import org.dive4elements.river.artifacts.D4EArtifact;
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22 import org.dive4elements.river.artifacts.model.SQOverview;
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23 import org.dive4elements.river.artifacts.model.SQOverviewFactory;
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24 import org.dive4elements.river.artifacts.model.SQOverview.KmFilter;
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25
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26 import org.dive4elements.river.utils.KMIndex;
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27
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28 import org.dive4elements.artifacts.common.utils.XMLUtils;
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29 import org.dive4elements.artifacts.Artifact;
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30 import org.dive4elements.artifacts.CallContext;
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31
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32 import org.dive4elements.artifactdatabase.data.StateData;
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33
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34 public class SQPeriodSelect extends PeriodsSelect {
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35
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36 private static Logger log = Logger.getLogger(SQPeriodSelect.class);
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37
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38 public static final String UI_PROVIDER = "sq.period.select";
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39
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40 private static final long serialVersionUID = 1L;
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41
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42 /** Get either the start date of the data or the end. */
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43 protected long getDataMinMaxDate(Artifact artifact, boolean minDate) {
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44 D4EArtifact arti = (D4EArtifact) artifact;
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45 RangeAccess access = new RangeAccess(arti);
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46 double km = access.getLocations()[0];
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47
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48 /* Bit of an overkill here but it will be cached and accessed
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49 * in the next state anyway. */
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50 SQOverview overview = SQOverviewFactory.getOverview(access.getRiverName());
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51
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52 KMIndex<List<Date>> entries = overview.filter(new KmFilter(km));
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53 if (entries.size() == 0) {
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54 return 0;
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55 }
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56 List<Date> dates = entries.get(0).getValue();
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57 if (dates.isEmpty()) {
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58 return 0;
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59 }
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60 Collections.sort(dates);
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61
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62 return minDate ? dates.get(0).getTime() : dates.get(dates.size() - 1).getTime();
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63 }
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64
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65 @Override
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66 protected Element[] createItems(
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67 XMLUtils.ElementCreator cr,
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68 Artifact artifact,
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69 String name,
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70 CallContext context)
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71 {
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72 if (!name.equals("start") && !name.equals("end")) {
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73 return null;
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74 }
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75 Element def = createItem(
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76 cr,
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77 new String[] {"default", Long.toString(
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78 getDataMinMaxDate(artifact, name.equals("start")))});
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79
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80 return new Element[] { def };
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81 }
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82
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83 @Override
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84 public String getUIProvider() {
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85 return UI_PROVIDER;
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86 }
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87 }
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88 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org