Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/FastCrossSectionChunk.java @ 4895:065a78d65007
meta-data.xml: Access wst_ranges and provide range is info-element.
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Mon, 28 Jan 2013 17:31:49 +0100 |
parents | 5642a83420f2 |
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rev | line source |
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Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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1 package de.intevation.flys.artifacts.model; |
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2 |
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3 import java.util.List; |
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4 import java.util.Collections; |
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5 |
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6 import java.io.Serializable; |
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7 |
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8 import de.intevation.flys.model.CrossSection; |
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9 |
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10 import de.intevation.flys.model.FastCrossSectionLine; |
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11 |
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12 import org.apache.log4j.Logger; |
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13 |
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14 public class FastCrossSectionChunk |
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15 implements Serializable |
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16 { |
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17 private static Logger log = Logger.getLogger(FastCrossSectionChunk.class); |
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18 |
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19 public static final String PREFIX = "FCSC:"; |
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20 public static final double KM_RANGE = 1.0; |
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21 |
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22 protected double startKm; |
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23 protected int crossSectionId; |
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24 |
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25 protected List<FastCrossSectionLine> crossSectionLines; |
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26 |
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27 public FastCrossSectionChunk() { |
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28 } |
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29 |
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30 public FastCrossSectionChunk(CrossSection cs, double km) { |
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31 |
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32 crossSectionId = cs.getId(); |
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33 startKm = Math.floor(km); |
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34 double stopKm = startKm + KM_RANGE; |
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35 |
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36 long startTime = System.currentTimeMillis(); |
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38 crossSectionLines = cs.getFastLines(startKm, stopKm); |
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40 long stopTime = System.currentTimeMillis(); |
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42 if (log.isDebugEnabled()) { |
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43 log.debug("Fetching cross section lines took " + |
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44 (float)(stopTime-startTime)/1000f + " secs."); |
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45 } |
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46 } |
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47 |
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48 public FastCrossSectionLine getCrossSectionLine(double km) { |
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49 FastCrossSectionLine key = new FastCrossSectionLine(km); |
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50 int pos = Collections.binarySearch( |
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51 crossSectionLines, key, FastCrossSectionLine.KM_CMP); |
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52 return pos < 0 ? null : crossSectionLines.get(pos); |
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53 } |
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54 |
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55 public static String createHashKey(CrossSection cs, double km) { |
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56 return PREFIX + cs.getId() + ":" + (int)Math.floor(km); |
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57 } |
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58 |
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59 public String getHashKey() { |
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60 return PREFIX + crossSectionId + ":" + (int)Math.floor(startKm); |
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61 } |
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62 |
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63 public double getStartKm() { |
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64 return startKm; |
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65 } |
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66 |
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67 public void setStartKm(double startKm) { |
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68 this.startKm = startKm; |
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69 } |
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70 |
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71 public double getStopKm() { |
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72 return startKm + KM_RANGE; |
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73 } |
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74 |
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75 public int getCrossSectionId() { |
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76 return crossSectionId; |
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77 } |
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78 |
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79 public void setCrossSectionId(int crossSectionId) { |
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80 this.crossSectionId = crossSectionId; |
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81 } |
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82 } |
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83 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |