Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MeasurementStationInfoService.java @ 4246:cac0878b4a92

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Add a service to return measurement stations of a river The new service returns an xml representation of the measurement stations on a river.
author Björn Ricks <bjoern.ricks@intevation.de>
date Wed, 24 Oct 2012 15:57:48 +0200
parents
children 5da024c2af62
rev   line source
4246
cac0878b4a92 Add a service to return measurement stations of a river
Björn Ricks <bjoern.ricks@intevation.de>
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1 package de.intevation.flys.artifacts.services;
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2
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3 import java.math.BigDecimal;
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4 import java.util.List;
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5
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6 import org.apache.log4j.Logger;
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7
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8 import org.w3c.dom.Document;
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9 import org.w3c.dom.Element;
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10
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11 import de.intevation.artifacts.CallMeta;
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12 import de.intevation.artifacts.GlobalContext;
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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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15
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16 import de.intevation.flys.artifacts.model.RiverFactory;
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17 import de.intevation.flys.model.MeasurementStation;
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18 import de.intevation.flys.model.Range;
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19 import de.intevation.flys.model.River;
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20
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21 /**
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22 * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a>
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23 */
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24 public class MeasurementStationInfoService extends FLYSService {
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25
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26 private static final Logger logger = Logger.getLogger(
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27 GaugeOverviewInfoService.class);
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28
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29 public static final String RIVER_XPATH = "/art:river/text()";
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30
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31 @Override
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32 public Document doProcess(
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33 Document data,
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34 GlobalContext globalContext,
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35 CallMeta callMeta
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36 ) {
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37 logger.debug("MeasurementStationInfoService.process");
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38
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39 String riverstr = XMLUtils.xpathString(
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40 data, RIVER_XPATH, ArtifactNamespaceContext.INSTANCE);
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41
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42 River river = RiverFactory.getRiver(riverstr);
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43
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44 Document result = XMLUtils.newDocument();
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45
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46 if (river == null) {
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47 logger.warn("No river with name " + riverstr + " found.");
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48 return result;
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49 }
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50
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51 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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52 result,
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53 ArtifactNamespaceContext.NAMESPACE_URI,
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54 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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55
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56 Element go = ec.create("masurement-station-info");
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57
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58 double[] minmax = river.determineMinMaxDistance();
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59 double[] minmaxq = river.determineMinMaxQ();
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60
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61 Element r = ec.create("river");
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62 ec.addAttr(r, "name", river.getName(), true);
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63 ec.addAttr(r, "start", Double.toString(minmax[0]), true);
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64 ec.addAttr(r, "end", Double.toString(minmax[1]), true);
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65 ec.addAttr(r, "wstunit", river.getWstUnit().getName(), true);
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66 ec.addAttr(r, "kmup", Boolean.toString(river.getKmUp()), true);
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67 ec.addAttr(r, "minq", Double.toString(minmaxq[0]), true);
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68 ec.addAttr(r, "maxq", Double.toString(minmaxq[1]), true);
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69 ec.addAttr(r, "official", Long.toString(river.getOfficialNumber()),
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70 true);
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71
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72 Element egs = ec.create("measurement-stations");
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73
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74 List<MeasurementStation> mstations = river.getMeasurementStations();
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75
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76 if (logger.isDebugEnabled()) {
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77 logger.debug("Loaded stations: " + mstations);
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78 }
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79
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80 for (MeasurementStation mstation: mstations) {
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81 Element eg = ec.create("measurement-station");
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82
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83 String name = mstation.getName();
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84 if (name != null) {
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85 ec.addAttr(eg, "name", name, true);
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86 }
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87
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88 String type = mstation.getMeasurementType();
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89 if (type != null) {
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90 ec.addAttr(eg, "type", type, true);
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91 }
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92
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93 String riverside = mstation.getRiverside();
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94 if (riverside != null) {
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95 ec.addAttr(eg, "riverside", riverside, true);
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96 }
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97
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98 Double station = mstation.getStation();
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99 if (station != null) {
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100 ec.addAttr(eg, "station", Double.toString(station), true);
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101 }
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102
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103 Range range = mstation.getRange();
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104 if (range != null) {
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105 BigDecimal a = range.getA();
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106 if (a != null) {
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107 ec.addAttr(eg, "start", getStringValue(a), true);
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108 }
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109
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110 BigDecimal b = range.getB();
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111 if (b != null) {
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112 ec.addAttr(eg, "end", getStringValue(b), true);
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113 }
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114 }
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115
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116 egs.appendChild(eg);
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117 }
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118
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119 go.appendChild(r);
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120 go.appendChild(egs);
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121 result.appendChild(go);
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122
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123 return result;
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124 }
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125
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126 /**
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127 * Returns a Double as String from a BigDecimal value.
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128 *
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129 * If value is null an empty String is returned.
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130 */
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131 private static String getStringValue(BigDecimal value) {
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132 return value != null
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133 ? Double.toString(value.doubleValue()) : "";
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134 }
cac0878b4a92 Add a service to return measurement stations of a river
Björn Ricks <bjoern.ricks@intevation.de>
parents:
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http://dive4elements.wald.intevation.org