Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/services/DistanceInfoService.java @ 5863:4897a58c8746

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River artifacts: Added new copyright headers.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 28 Apr 2013 14:40:59 +0200
parents 5aa05a7a34b7
children 35b2d86c3fb5
rev   line source
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4897a58c8746 River artifacts: Added new copyright headers.
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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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11 import java.util.Iterator;
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12
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13 import org.apache.log4j.Logger;
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14
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15 import org.w3c.dom.Document;
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16 import org.w3c.dom.Element;
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17
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18 import org.dive4elements.artifacts.CallMeta;
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19 import org.dive4elements.artifacts.GlobalContext;
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20
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21 import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
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22 import org.dive4elements.artifacts.common.utils.XMLUtils;
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23
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24 import org.dive4elements.river.model.FastAnnotations;
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25
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26 import org.dive4elements.river.artifacts.model.LocationProvider;
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27
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28
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29 /**
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30 * This service provides information about distances of a specified river.
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31 *
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32 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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33 */
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34 public class DistanceInfoService extends FLYSService {
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35
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36 /** The logger used in this service. */
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37 private static Logger logger = Logger.getLogger(DistanceInfoService.class);
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38
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39 public static final String RIVER_XPATH = "/art:river/text()";
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40
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41 public static final String FILTER_XPATH = "/art:river/art:filter/text()";
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42
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43
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44 /**
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45 * The default constructor.
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46 */
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47 public DistanceInfoService() {
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48 }
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49
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50
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51 @Override
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52 public Document doProcess(
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53 Document data,
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54 GlobalContext globalContext,
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55 CallMeta callMeta
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56 ) {
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57 logger.debug("DistanceInfoService.process");
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58
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59 String river = XMLUtils.xpathString(
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60 data, RIVER_XPATH, ArtifactNamespaceContext.INSTANCE);
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61
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62 String filterName = XMLUtils.xpathString(
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63 data, FILTER_XPATH, ArtifactNamespaceContext.INSTANCE);
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64
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65 if (river == null || (river = river.trim()).length() == 0) {
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66 logger.warn("No river specified. Cannot return distance info!");
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67 return XMLUtils.newDocument();
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68 }
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69
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70 logger.debug("Search distances for river: " + river);
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71
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72 FastAnnotations fas = LocationProvider.getAnnotations(river);
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73
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74 FastAnnotations.Filter filter = selectFilter(filterName);
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75
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76 return buildDocument(fas.filter(filter));
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77 }
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78
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79 protected Document buildDocument(
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80 Iterator<FastAnnotations.Annotation> iter
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81 ) {
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82 Document result = XMLUtils.newDocument();
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83
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84 Element all = result.createElement("distances");
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85
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86 while (iter.hasNext()) {
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87 all.appendChild(buildNode(result, iter.next()));
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88 }
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89
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90 result.appendChild(all);
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91
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92 return result;
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93 }
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94
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95 protected static FastAnnotations.Filter selectFilter(String name) {
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96
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97 if (name != null) {
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98 if ("locations".equals(name)) return FastAnnotations.IS_POINT;
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99 if ("distances".equals(name)) return FastAnnotations.IS_RANGE;
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100 if ("measuringpoint".equals(name))
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101 return new FastAnnotations.NameFilter("Messstelle");
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102 }
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103
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104 return FastAnnotations.ALL;
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105 }
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106
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107 /**
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108 * Builds an Element for a distance info.
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109 *
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110 * @param an The Annotation that provides information about the distance.
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111 *
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112 * @return an Element that contains information about a distance.
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113 */
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114 protected static Element buildNode(
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115 Document document,
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116 FastAnnotations.Annotation an
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117 ) {
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118 Element distance = document.createElement("distance");
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119
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120 distance.setAttribute("description", an.getPosition());
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121
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122 String riverSide = an.getAttribute();
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123
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124 if (riverSide != null && riverSide.length() > 0) {
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125 distance.setAttribute("riverside", riverSide);
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126 }
3dc61e00385e Merged with trunk and introduced hashing of computed values.
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127
2145
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
128 distance.setAttribute("from", String.valueOf(an.getA()));
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
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129
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
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parents: 1631
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130 double b = an.getB();
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
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parents: 1631
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131 double bottom = an.getBottom();
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parents: 1631
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132 double top = an.getTop();
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parents: 1631
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133
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
134 if (!Double.isNaN(b)) {
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
135 distance.setAttribute("to", String.valueOf(b));
686
3dc61e00385e Merged with trunk and introduced hashing of computed values.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 644
diff changeset
136 }
2145
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
137
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
138 if (!Double.isNaN(bottom)) {
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
139 distance.setAttribute("bottom", String.valueOf(bottom));
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
140 }
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
141
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
142 if (!Double.isNaN(top)) {
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
143 distance.setAttribute("top", String.valueOf(top));
686
3dc61e00385e Merged with trunk and introduced hashing of computed values.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 644
diff changeset
144 }
301
1a00cb4998a8 Implemented a service that retrieves distance information for a specific river.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
145
1a00cb4998a8 Implemented a service that retrieves distance information for a specific river.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
146 return distance;
1a00cb4998a8 Implemented a service that retrieves distance information for a specific river.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
147 }
1a00cb4998a8 Implemented a service that retrieves distance information for a specific river.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
148 }
1a00cb4998a8 Implemented a service that retrieves distance information for a specific river.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
149 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org