Mercurial > dive4elements > river

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

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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.services;
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10
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11 import org.dive4elements.artifacts.CallMeta;
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12 import org.dive4elements.artifacts.GlobalContext;
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13
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14 import org.dive4elements.artifacts.common.utils.XMLUtils;
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15
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16 import org.dive4elements.river.artifacts.cache.CacheFactory;
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17
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18 import org.dive4elements.river.backend.SessionHolder;
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19
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20 import org.dive4elements.river.model.CrossSection;
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21 import org.dive4elements.river.model.CrossSectionLine;
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22
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23 import java.util.AbstractMap;
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24 import java.util.ArrayDeque;
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25 import java.util.Deque;
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26 import java.util.List;
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27 import java.util.Map;
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28 import java.util.NavigableMap;
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29
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30 import java.util.concurrent.ConcurrentSkipListMap;
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31
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32 import net.sf.ehcache.Cache;
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33
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34 import org.apache.logging.log4j.Logger;
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35 import org.apache.logging.log4j.LogManager;
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36
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37 import org.hibernate.Query;
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38 import org.hibernate.Session;
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39
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40 import org.w3c.dom.Document;
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41 import org.w3c.dom.Element;
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42 import org.w3c.dom.NodeList;
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43
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44
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45 /**
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46 * Service to find the next/previous km (measurement) of cross sections.
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47 * Looking at the query for a single cross-section id at a single km, the
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48 * service does the following:
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49 *
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50 * It returns the km itself if a measurement at that km was found and
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51 * the N nearest other measurement points in both directions.
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52 *
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53 * That means, you can pass N=0 to find out whether a measurement at given km
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54 * exists.
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55 *
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56 * If less than N neighbours exist in one direction, less are delivered
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57 * (e.g. given measurements at [0,2,3,4,5,7,8,9] a query for km=8, N=3 will
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58 * result in [4,5,7,8,9]).
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59 */
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60 public class CrossSectionKMService
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61 extends D4EService
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62 {
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63 private static Logger log =
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64 LogManager.getLogger(CrossSectionKMService.class);
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65
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66 public static final String CACHE_NAME = "cross-section-kms";
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67
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68
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69 /** Trivial constructor. */
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70 public CrossSectionKMService() {
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71 }
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72
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73
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74 /**
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75 * @param data
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76 */
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77 @Override
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78 public Document doProcess(
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79 Document data,
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80 GlobalContext globalContext,
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81 CallMeta callMeta
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82 ) {
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83 log.debug("CrossSectionKMService.doProcess");
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84
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85 NodeList crossSectionNodes =
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86 data.getElementsByTagName("art:cross-section");
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87
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88 Document document = XMLUtils.newDocument();
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89
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90 Element all = document.createElement("cross-sections");
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91
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92 for (int i = 0, CS = crossSectionNodes.getLength(); i < CS; ++i) {
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93 Element crossSectionElement = (Element)crossSectionNodes.item(i);
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94
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95 String idString = crossSectionElement.getAttribute("id");
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96 String kmString = crossSectionElement.getAttribute("km");
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97 String neighborsString = crossSectionElement.getAttribute("n");
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98
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99 if (idString.length() == 0 || kmString.length() == 0) {
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100 log.debug("missing attributes in cross-section element");
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101 continue;
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102 }
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103
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104 double km;
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105 Integer crossSectionId;
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106 int N = 2;
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107
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108 try {
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109 km = Double.parseDouble(kmString);
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110 crossSectionId = Integer.valueOf(idString);
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111
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112 if (neighborsString.length() > 0) {
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113 N = Integer.parseInt(neighborsString);
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114 }
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115 }
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116 catch (NumberFormatException nfe) {
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117 log.debug("converting number failed", nfe);
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f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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diff changeset
118 continue;
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
119 }
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diff changeset
120
2120
f021080cb409 Use improved caching for cross section lines data.
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diff changeset
121 NavigableMap<Double, Integer> map = getKms(crossSectionId);
1749
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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122
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parents:
diff changeset
123 if (map == null) {
8202
e4606eae8ea5 sed src/**/*.java 's/logger/log/g'
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5994
diff changeset
124 log.debug("cannot find cross section " + crossSectionId);
1749
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
125 continue;
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
126 }
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127
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128 Deque<Map.Entry<Double, Integer>> result =
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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129 nearestNeighbors(map, km, N);
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130
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diff changeset
131 if (!result.isEmpty()) {
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diff changeset
132 Element csE = document.createElement("cross-section");
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diff changeset
133 csE.setAttribute("id", idString);
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134 for (Map.Entry<Double, Integer> entry: result) {
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diff changeset
135 Element lineE = document.createElement("line");
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diff changeset
136 lineE.setAttribute(
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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137 "line-id", String.valueOf(entry.getValue()));
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diff changeset
138 lineE.setAttribute(
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139 "km", String.valueOf(entry.getKey()));
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140 csE.appendChild(lineE);
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141 }
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142 all.appendChild(csE);
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143 }
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parents:
diff changeset
144 }
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145
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146 document.appendChild(all);
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147
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148 return document;
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
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149 }
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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150
2120
f021080cb409 Use improved caching for cross section lines data.
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diff changeset
151 public static NavigableMap<Double, Integer> getKms(int crossSectionId) {
f021080cb409 Use improved caching for cross section lines data.
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152
f021080cb409 Use improved caching for cross section lines data.
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diff changeset
153 Cache cache = CacheFactory.getCache(CACHE_NAME);
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154
f021080cb409 Use improved caching for cross section lines data.
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diff changeset
155 if (cache == null) {
f021080cb409 Use improved caching for cross section lines data.
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diff changeset
156 return getUncached(crossSectionId);
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
157 }
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
158
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
159 NavigableMap<Double, Integer> map;
f021080cb409 Use improved caching for cross section lines data.
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diff changeset
160
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
161 net.sf.ehcache.Element element = cache.get(crossSectionId);
f021080cb409 Use improved caching for cross section lines data.
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diff changeset
162 if (element == null) {
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
163 map = getUncached(crossSectionId);
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
164 if (map != null) {
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
165 element = new net.sf.ehcache.Element(
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
166 crossSectionId, map);
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diff changeset
167 cache.put(element);
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
168 }
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
169 }
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
170 else {
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
171 map = (NavigableMap<Double, Integer>)element.getValue();
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diff changeset
172 }
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diff changeset
173
f021080cb409 Use improved caching for cross section lines data.
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diff changeset
174 return map;
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parents: 1973
diff changeset
175 }
f021080cb409 Use improved caching for cross section lines data.
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diff changeset
176
1961
4781096f31f8 Mainly documentation.
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177
4781096f31f8 Mainly documentation.
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diff changeset
178 /**
4781096f31f8 Mainly documentation.
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179 * @param km the kilometer from which to start searching for other
4781096f31f8 Mainly documentation.
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diff changeset
180 * measurements
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diff changeset
181 * @param N number of neighboring measurements to find.
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182 */
1749
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
183 public static Deque<Map.Entry<Double, Integer>> nearestNeighbors(
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
184 NavigableMap<Double, Integer> map,
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
185 double km,
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
186 int N
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
187 ) {
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
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188 Deque<Map.Entry<Double, Integer>> result =
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
189 new ArrayDeque<Map.Entry<Double, Integer>>(2*N);
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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diff changeset
190
2120
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
191 Integer v = map.get(km);
1961
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diff changeset
192
2120
f021080cb409 Use improved caching for cross section lines data.
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diff changeset
193 if (v != null) {
f021080cb409 Use improved caching for cross section lines data.
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parents: 1973
diff changeset
194 result.add(new AbstractMap.SimpleEntry<Double, Integer>(km, v));
1961
4781096f31f8 Mainly documentation.
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diff changeset
195 }
4781096f31f8 Mainly documentation.
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diff changeset
196
1749
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
197 int i = 0;
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
198 for (Map.Entry<Double, Integer> entry:
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parents:
diff changeset
199 map.headMap(km, false).descendingMap().entrySet()) {
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
200 if (i++ >= N) {
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
201 break;
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
202 }
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
203 result.addFirst(entry);
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
204 }
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
205
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
206 i = 0;
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
207 for (Map.Entry<Double, Integer> entry:
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
208 map.tailMap(km, false).entrySet()) {
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
209 if (i++ >= N) {
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
210 break;
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
211 }
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
212 result.addLast(entry);
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
213 }
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
214
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
215 return result;
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
216 }
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
217
1961
4781096f31f8 Mainly documentation.
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parents: 1749
diff changeset
218
4781096f31f8 Mainly documentation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1749
diff changeset
219 /**
4781096f31f8 Mainly documentation.
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parents: 1749
diff changeset
220 * @param crossSectionId id of queried cross-section (in db).
4781096f31f8 Mainly documentation.
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parents: 1749
diff changeset
221 * @return Mapping from kilometer to db-id.
4781096f31f8 Mainly documentation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1749
diff changeset
222 */
1749
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
223 public static NavigableMap<Double, Integer> getUncached(
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
224 Integer crossSectionId
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
225 ) {
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
226 NavigableMap<Double, Integer> result =
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
227 new ConcurrentSkipListMap<Double, Integer>();
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
228
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
229 Session session = SessionHolder.HOLDER.get();
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
230 Query query = session.createQuery(
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
231 "from CrossSection where id=:id");
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
232 query.setParameter("id", crossSectionId);
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
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parents:
diff changeset
233
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
234 List<CrossSection> crossSections = query.list();
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
235 if (crossSections.isEmpty()) {
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
236 return null;
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
237 }
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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238
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
239 CrossSection crossSection = crossSections.get(0);
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
240 List<CrossSectionLine> lines = crossSection.getLines();
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
241
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
242 for (CrossSectionLine line: lines) {
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
243 Double km = line.getKm().doubleValue();
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
244 Integer id = line.getId();
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
245 result.put(km, id);
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
246 }
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
247
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
248 return result;
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
249 }
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
250 }
f7d890f4855f Added Service Service to lookup the Nth nearest neighbors for a set of given cross section ids and kms.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
251 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org