Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/LocationProvider.java @ 8326:10917ec29625
Inject current km and pnp into the context used to calculate W in cm at gauge.
author | Raimund Renkert <rrenkert@intevation.de> |
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date | Thu, 25 Sep 2014 17:23:12 +0200 |
parents | af13ceeba52a |
children | 0a5239a1e46e |
rev | line source |
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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 net.sf.ehcache.Cache; |
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12 import net.sf.ehcache.Element; |
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13 |
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14 import org.apache.log4j.Logger; |
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15 |
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16 import org.dive4elements.river.model.Annotation; |
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17 import org.dive4elements.river.model.FastAnnotations; |
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18 |
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19 import org.dive4elements.river.artifacts.cache.CacheFactory; |
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20 |
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21 |
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22 /** Make FastAnnotations (db unbound) available. */ |
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23 public class LocationProvider { |
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24 |
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25 private static final Logger log = |
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26 Logger.getLogger(LocationProvider.class); |
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27 |
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28 |
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29 public static final String CACHE_KEY = "location-provider"; |
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30 |
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31 public static final String PREFIX = "lp-"; |
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32 |
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33 |
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34 private LocationProvider() { |
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35 } |
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36 |
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37 public static String getLocation(String river, double km) { |
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38 |
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39 FastAnnotations fas = getAnnotations(river, km); |
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40 |
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41 FastAnnotations.Annotation an = fas.findByKm(km); |
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42 |
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43 return an != null ? an.getPosition() : null; |
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44 } |
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45 |
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46 public static FastAnnotations getAnnotations(String river) { |
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47 return getAnnotations(river, Double.MAX_VALUE); |
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48 } |
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49 |
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50 protected static FastAnnotations getAnnotations(String river, double km) { |
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51 // TODO issue880: Make annotations available _per type_ |
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52 |
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53 Cache cache = CacheFactory.getCache(CACHE_KEY); |
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54 |
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55 if (cache == null) { |
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56 return uncachedAnnotations(river, km); |
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57 } |
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58 |
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59 String key = PREFIX + river; |
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60 |
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61 Element element = cache.get(key); |
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62 |
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63 if (element != null) { |
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64 return (FastAnnotations)element.getValue(); |
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65 } |
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66 |
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67 FastAnnotations fas = uncachedAnnotations(river, Double.MAX_VALUE); |
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68 |
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69 cache.put(new Element(key, fas)); |
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70 |
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71 return fas; |
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72 } |
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73 |
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74 protected static FastAnnotations uncachedAnnotations( |
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75 String river, |
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76 double km |
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77 ) { |
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78 if (km != Double.MAX_VALUE) { |
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79 // XXX Fake it by using a standard Annotation. |
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80 |
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81 Annotation annotation = |
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82 AnnotationsFactory.getAnnotation(river, km); |
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83 |
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84 if (annotation != null) { |
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85 FastAnnotations.Annotation fa = |
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86 new FastAnnotations.Annotation( |
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87 km, Double.NaN, |
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88 annotation.getPosition().getValue(), null, null, |
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89 Double.NaN, Double.NaN); |
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90 return new FastAnnotations( |
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91 new FastAnnotations.Annotation [] { fa }); |
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92 } |
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93 |
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94 return new FastAnnotations(new FastAnnotations.Annotation[0]); |
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95 } |
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96 |
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97 long startTime = System.currentTimeMillis(); |
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98 |
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99 FastAnnotations fas = new FastAnnotations(river); |
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100 |
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101 long stopTime = System.currentTimeMillis(); |
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102 |
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103 if (log.isDebugEnabled()) { |
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104 log.debug("Loading locations took " + |
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105 (stopTime-startTime)/1000f + " secs."); |
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106 } |
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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changeset
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107 |
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a4bdf7d8527e
Use FastAnnotations for LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2127
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108 return fas; |
2063
97a25b54eea3
Part 1 of #125: added a description for a location to the WaterlevelExport.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff
changeset
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109 } |
97a25b54eea3
Part 1 of #125: added a description for a location to the WaterlevelExport.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff
changeset
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110 } |
97a25b54eea3
Part 1 of #125: added a description for a location to the WaterlevelExport.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff
changeset
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111 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |