Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/MorphologicWidthFactory.java @ 5838:5aa05a7a34b7

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Rename modules to more fitting names.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 15:23:37 +0200
parents flys-artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/MorphologicWidthFactory.java@bd047b71ab37
children 4897a58c8746
rev   line source
5831
bd047b71ab37 Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
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1 package org.dive4elements.river.artifacts.model.minfo;
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2
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3 import java.util.List;
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4
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5 import net.sf.ehcache.Cache;
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6 import net.sf.ehcache.Element;
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7
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8 import org.apache.log4j.Logger;
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9 import org.hibernate.SQLQuery;
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10 import org.hibernate.Session;
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11 import org.hibernate.type.StandardBasicTypes;
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12
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13 import org.dive4elements.river.artifacts.cache.CacheFactory;
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14 import org.dive4elements.river.artifacts.model.StaticMorphoWidthCacheKey;
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15 import org.dive4elements.river.backend.SessionHolder;
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16
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17
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18 public class MorphologicWidthFactory
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19 {
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20 /** Private logger to use here. */
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21 private static Logger log = Logger.getLogger(MorphologicWidthFactory.class);
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22
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23 public static final String SQL_SELECT =
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24 "SELECT mwv.station AS station, mwv.width AS width " +
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25 " FROM morphologic_width mw" +
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26 " JOIN morphologic_width_values mwv on mwv.morphologic_width_id = mw.id" +
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27 " WHERE mw.id = :width_id";
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28
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29 private MorphologicWidthFactory() {
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30 }
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31
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32
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33 /**
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34 * Get WKms for given column and wst_id, caring about the cache.
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35 */
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36 public static MorphologicWidth getWidth(int width_id) {
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37 log.debug("MorphologicWidthFactory.getWidth");
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38 Cache cache = CacheFactory.getCache(StaticMorphoWidthCacheKey.CACHE_NAME);
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39
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40 StaticMorphoWidthCacheKey cacheKey;
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41
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42 if (cache != null) {
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43 cacheKey = new StaticMorphoWidthCacheKey(width_id);
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44 Element element = cache.get(cacheKey);
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45 if (element != null) {
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46 log.debug("Got static bedheight values from cache");
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47 return (MorphologicWidth)element.getValue();
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48 }
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49 }
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50 else {
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51 cacheKey = null;
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52 }
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53
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54 MorphologicWidth values = getWidthUncached(width_id);
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55
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56 if (values != null && cacheKey != null) {
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57 log.debug("Store static morphologic width values in cache.");
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58 Element element = new Element(cacheKey, values);
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59 cache.put(element);
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60 }
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61 return values;
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62 }
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63
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64 private static MorphologicWidth getWidthUncached(int width_id) {
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65 if (log.isDebugEnabled()) {
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66 log.debug("MorphologicWidthFactory.getWidthUncached");
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67 }
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68
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69 Session session = SessionHolder.HOLDER.get();
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70 SQLQuery sqlQuery = session.createSQLQuery(SQL_SELECT)
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71 .addScalar("station", StandardBasicTypes.DOUBLE)
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72 .addScalar("width", StandardBasicTypes.DOUBLE);
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73 sqlQuery.setInteger("width_id", width_id);
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74 List<Object []> results = sqlQuery.list();
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75
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76 MorphologicWidth widths = new MorphologicWidth();
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77 for (int i = 0; i < results.size(); i++) {
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78 Object[] row = results.get(i);
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79 log.debug("got station: " + (Double)row[0]);
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80 widths.add(
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81 (Double) row[0],
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82 (Double) row[1]);
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83 }
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84 return widths;
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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=utf8 :
http://dive4elements.wald.intevation.org