Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/FastCrossSectionLineFactory.java @ 8860:28df64078f27
Merge with 0862ea5d66baf60e7eee496d130a35157cc9ec12
author | gernotbelger |
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date | Fri, 19 Jan 2018 11:23:42 +0100 |
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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 org.dive4elements.river.artifacts.cache.CacheFactory; |
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12 |
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13 import org.dive4elements.river.model.CrossSection; |
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14 |
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15 import org.dive4elements.river.model.FastCrossSectionLine; |
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16 |
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17 import net.sf.ehcache.Cache; |
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18 import net.sf.ehcache.Element; |
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19 |
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20 import java.util.List; |
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21 |
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22 import org.apache.log4j.Logger; |
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23 |
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24 public class FastCrossSectionLineFactory |
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25 { |
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26 private static Logger log = |
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27 Logger.getLogger(FastCrossSectionLineFactory.class); |
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28 |
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29 public static final String CACHE_NAME = "fast-cross-section-lines"; |
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30 |
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31 private FastCrossSectionLineFactory() { |
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32 } |
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33 |
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34 public static FastCrossSectionLine getCrossSectionLine( |
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35 CrossSection cs, |
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36 double km |
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37 ) { |
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38 Cache cache = CacheFactory.getCache(CACHE_NAME); |
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39 |
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40 boolean debug = log.isDebugEnabled(); |
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41 |
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42 if (cache == null) { |
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43 if (debug) { |
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44 log.debug("No cross section chunk cache configured."); |
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45 } |
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46 List<FastCrossSectionLine> lines = cs.getFastLines(km, km); |
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47 return lines.isEmpty() ? null : lines.get(0); |
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48 } |
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49 |
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50 String cacheKey = FastCrossSectionChunk.createHashKey(cs, km); |
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51 |
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52 Element element = cache.get(cacheKey); |
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53 |
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54 FastCrossSectionChunk fcsc; |
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55 |
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56 if (element != null) { |
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57 if (debug) { |
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58 log.debug("Found cross section chunk in cache id: " + |
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59 cs.getId() + " km: " + km); |
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60 } |
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61 |
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62 fcsc = (FastCrossSectionChunk)element.getValue(); |
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63 } |
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64 else { |
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65 if (debug) { |
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66 log.debug("Not found cross section chunk in cache id: " + |
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67 cs.getId() + " km: " + km + " -> loading"); |
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68 } |
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69 fcsc = new FastCrossSectionChunk(cs, km); |
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70 element = new Element(cacheKey, fcsc); |
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71 cache.put(element); |
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72 } |
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73 |
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74 return fcsc.getCrossSectionLine(km); |
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75 } |
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76 } |
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77 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |