Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/FastCrossSectionChunk.java @ 9801:1d7a72a50183 3.2.x tip

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Assume Compose V2, consistently
author Tom Gottfried <tom@intevation.de>
date Thu, 23 Nov 2023 10:14:13 +0100
parents 0a5239a1e46e
children
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 java.util.List;
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12 import java.util.Collections;
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13
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14 import java.io.Serializable;
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15
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16 import org.dive4elements.river.model.CrossSection;
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17
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18 import org.dive4elements.river.model.FastCrossSectionLine;
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19
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20 import org.apache.logging.log4j.Logger;
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21 import org.apache.logging.log4j.LogManager;
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22
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23 /**
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24 * Number of FastCrossSectionLines, e.g. to store in cache and retrieve
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25 * a single contain CrossSectionLine by its km.
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26 */
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27 public class FastCrossSectionChunk
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28 implements Serializable
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29 {
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30 private static Logger log = LogManager.getLogger(FastCrossSectionChunk.class);
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31
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32 public static final String PREFIX = "FCSC:";
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33 public static final double KM_RANGE = 1.0;
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34
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35 protected double startKm;
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36 protected int crossSectionId;
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37
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38 protected List<FastCrossSectionLine> crossSectionLines;
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39
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40 public FastCrossSectionChunk() {
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41 }
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42
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43 public FastCrossSectionChunk(CrossSection cs, double km) {
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45 crossSectionId = cs.getId();
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46 startKm = Math.floor(km);
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47 double stopKm = startKm + KM_RANGE;
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48
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49 long startTime = System.currentTimeMillis();
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50
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51 crossSectionLines = cs.getFastLines(startKm, stopKm);
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52
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53 long stopTime = System.currentTimeMillis();
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54
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55 if (log.isDebugEnabled()) {
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56 log.debug("Fetching cross section lines took " +
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57 (float)(stopTime-startTime)/1000f + " secs.");
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58 }
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59 }
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60
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61 /** Finds the FastCrossSectionLine at km (null if not found). */
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62 public FastCrossSectionLine getCrossSectionLine(double km) {
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63 FastCrossSectionLine key = new FastCrossSectionLine(km);
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64 int pos = Collections.binarySearch(
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65 crossSectionLines, key, FastCrossSectionLine.KM_CMP);
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66 return pos < 0 ? null : crossSectionLines.get(pos);
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67 }
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68
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69 public static String createHashKey(CrossSection cs, double km) {
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70 return PREFIX + cs.getId() + ":" + (int)Math.floor(km);
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71 }
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73 public String getHashKey() {
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74 return PREFIX + crossSectionId + ":" + (int)Math.floor(startKm);
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75 }
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77 public double getStartKm() {
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78 return startKm;
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79 }
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81 public void setStartKm(double startKm) {
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82 this.startKm = startKm;
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83 }
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85 public double getStopKm() {
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86 return startKm + KM_RANGE;
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87 }
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89 public int getCrossSectionId() {
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90 return crossSectionId;
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91 }
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93 public void setCrossSectionId(int crossSectionId) {
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94 this.crossSectionId = crossSectionId;
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95 }
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96 }
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97 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org