Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/DistanceInfoService.java @ 4255:670e98f5a441

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Fixed leak while merging facets. The ThemeList that is used by OutputHelper to sort the Facets for an Output now uses a list to store the ManagedFacets. The correct order is made up by sorting the List using Collections.sort() function of the Java JDK. Therfore, the ManagedFacet class implements the Comparable interface. The return value of its compareTo(other) method depends on the value of the 'position' field.
author Ingo Weinzierl <weinzierl.ingo@googlemail.com>
date Thu, 25 Oct 2012 14:01:46 +0200
parents 9136fc8f35f0
children
rev   line source
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1 package de.intevation.flys.artifacts.services;
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2
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3 import java.util.Iterator;
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4
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5 import org.apache.log4j.Logger;
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6
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7 import org.w3c.dom.Document;
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8 import org.w3c.dom.Element;
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9
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10 import de.intevation.artifacts.CallMeta;
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11 import de.intevation.artifacts.GlobalContext;
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12
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13 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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14 import de.intevation.artifacts.common.utils.XMLUtils;
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16 import de.intevation.flys.model.FastAnnotations;
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18 import de.intevation.flys.artifacts.model.LocationProvider;
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21 /**
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22 * This service provides information about distances of a specified river.
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23 *
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24 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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25 */
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26 public class DistanceInfoService extends FLYSService {
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28 /** The logger used in this service. */
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29 private static Logger logger = Logger.getLogger(DistanceInfoService.class);
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31 public static final String RIVER_XPATH = "/art:river/text()";
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33 public static final String FILTER_XPATH = "/art:river/art:filter/text()";
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36 /**
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37 * The default constructor.
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38 */
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39 public DistanceInfoService() {
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40 }
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43 @Override
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44 public Document doProcess(
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45 Document data,
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46 GlobalContext globalContext,
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47 CallMeta callMeta
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48 ) {
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49 logger.debug("DistanceInfoService.process");
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51 String river = XMLUtils.xpathString(
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52 data, RIVER_XPATH, ArtifactNamespaceContext.INSTANCE);
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54 String filterName = XMLUtils.xpathString(
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55 data, FILTER_XPATH, ArtifactNamespaceContext.INSTANCE);
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56
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57 if (river == null || (river = river.trim()).length() == 0) {
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58 logger.warn("No river specified. Cannot return distance info!");
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59 return XMLUtils.newDocument();
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60 }
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62 logger.debug("Search distances for river: " + river);
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64 FastAnnotations fas = LocationProvider.getAnnotations(river);
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66 FastAnnotations.Filter filter = selectFilter(filterName);
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68 return buildDocument(fas.filter(filter));
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69 }
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71 protected Document buildDocument(
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72 Iterator<FastAnnotations.Annotation> iter
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73 ) {
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74 Document result = XMLUtils.newDocument();
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76 Element all = result.createElement("distances");
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77
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78 while (iter.hasNext()) {
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79 all.appendChild(buildNode(result, iter.next()));
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80 }
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81
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82 result.appendChild(all);
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84 return result;
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85 }
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87 protected static FastAnnotations.Filter selectFilter(String name) {
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89 if (name != null) {
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90 if ("locations".equals(name)) return FastAnnotations.IS_POINT;
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91 if ("distances".equals(name)) return FastAnnotations.IS_RANGE;
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92 if ("measuringpoint".equals(name))
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93 return new FastAnnotations.NameFilter("Messstelle");
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94 }
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95
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96 return FastAnnotations.ALL;
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97 }
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99 /**
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100 * Builds an Element for a distance info.
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101 *
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102 * @param an The Annotation that provides information about the distance.
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103 *
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104 * @return an Element that contains information about a distance.
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105 */
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106 protected static Element buildNode(
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107 Document document,
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108 FastAnnotations.Annotation an
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109 ) {
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110 Element distance = document.createElement("distance");
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112 distance.setAttribute("description", an.getPosition());
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114 String riverSide = an.getAttribute();
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115
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116 if (riverSide != null && riverSide.length() > 0) {
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117 distance.setAttribute("riverside", riverSide);
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118 }
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119
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120 distance.setAttribute("from", String.valueOf(an.getA()));
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diff changeset
122 double b = an.getB();
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
123 double bottom = an.getBottom();
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
124 double top = an.getTop();
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
125
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
126 if (!Double.isNaN(b)) {
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
127 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
128 }
2145
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
129
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
130 if (!Double.isNaN(bottom)) {
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
131 distance.setAttribute("bottom", String.valueOf(bottom));
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
132 }
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
133
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
134 if (!Double.isNaN(top)) {
e92bc9b0ca1d DistanceInfoService now uses annotations from LocationProvider.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1631
diff changeset
135 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
136 }
301
1a00cb4998a8 Implemented a service that retrieves distance information for a specific river.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
137
1a00cb4998a8 Implemented a service that retrieves distance information for a specific river.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
138 return distance;
1a00cb4998a8 Implemented a service that retrieves distance information for a specific river.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
139 }
1a00cb4998a8 Implemented a service that retrieves distance information for a specific river.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
140 }
1a00cb4998a8 Implemented a service that retrieves distance information for a specific river.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
141 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org