Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/DischargeInfoService.java @ 4173:7d4480c0e68e

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Allow users to select the current relevant discharge table in historical discharge table calculattion. In addition to this, the discharge tables in the helper panel displayed in the client is ordered in time.
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 18 Oct 2012 12:13:48 +0200
parents 0cc2c3d89a9d
children 810db532803a
rev   line source
2276
2966787b5188 Added service for discharge infos at a specific gauge.
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.artifacts.services;
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2
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parents: 4115
diff changeset
3 import java.util.Collections;
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4 import java.util.List;
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5 import java.util.Date;
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6 import java.util.Calendar;
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7 import java.util.GregorianCalendar;
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8
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9 import org.apache.log4j.Logger;
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10
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11 import org.w3c.dom.Document;
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12 import org.w3c.dom.Element;
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13
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14 import de.intevation.artifacts.CallMeta;
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15 import de.intevation.artifacts.GlobalContext;
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16
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17 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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18 import de.intevation.artifacts.common.utils.XMLUtils;
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19
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20 import de.intevation.flys.artifacts.model.DischargeTables;
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21 import de.intevation.flys.model.Gauge;
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22 import de.intevation.flys.model.DischargeTable;
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23 import de.intevation.flys.model.TimeInterval;
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24
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25 /**
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26 * This service provides information about discharges at a defined gauge.
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27 *
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28 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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29 */
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30 public class DischargeInfoService extends FLYSService {
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31
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32 /** The logger used in this service. */
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33 private static Logger logger = Logger.getLogger(DischargeInfoService.class);
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34
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35 public static final String GAUGE_XPATH = "/art:gauge/text()";
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36
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37 public DischargeInfoService() {
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38 }
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39
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40
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41 @Override
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42 public Document doProcess(
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43 Document data,
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44 GlobalContext globalContext,
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45 CallMeta callMeta
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46 ) {
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47 logger.debug("DischargeInfoService.process");
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48 logger.debug(XMLUtils.toString(data));
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49
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50 String gaugeNumber = XMLUtils.xpathString(
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51 data, GAUGE_XPATH, ArtifactNamespaceContext.INSTANCE);
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52
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53 if(gaugeNumber == null ||
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54 (gaugeNumber = gaugeNumber.trim()).length() == 0) {
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55 logger.warn("No gauge specified. Cannot return discharge info.");
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56 return XMLUtils.newDocument();
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57 }
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58
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59 logger.debug("Getting discharge for gauge: " + gaugeNumber);
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60
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61 long gn;
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62 try {
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63 gn = Long.parseLong(gaugeNumber);
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64 }
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65 catch (NumberFormatException nfe) {
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66 logger.warn("Invalid gauge number. Cannot return discharg info.");
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67 return XMLUtils.newDocument();
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68 }
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69
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70 Gauge gauge = Gauge.getGaugeByOfficialNumber(gn);
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71
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72 logger.debug("Found gauge: " + gauge.getName());
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73
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74 return buildDocument(gauge);
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75 }
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77
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78 protected Document buildDocument(Gauge gauge) {
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79 Document result = XMLUtils.newDocument();
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80
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81 List<DischargeTable> tables =gauge.getDischargeTables();
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82 Collections.sort(tables);
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83
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84 Element all = result.createElement("discharges");
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85 for (DischargeTable dt: tables) {
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86 Element discharge = result.createElement("discharge");
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87 discharge.setAttribute("description", dt.getDescription());
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88
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89 // Get time interval.
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90 TimeInterval ti = dt.getTimeInterval();
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91
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92 if (ti == null) {
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93 logger.warn("DischargeTable has no TimeInterval set!");
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94 continue;
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95 }
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96
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97 Date startTime = ti.getStartTime();
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98 Date stopTime = ti.getStopTime();
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99
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100 if (startTime != null) {
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101 discharge.setAttribute("start", String.valueOf(startTime.getTime()));
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102 }
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103 else {
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104 continue;
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105 }
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106
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107 if (stopTime != null && dt.getKind() != DischargeTables.MASTER) {
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108 discharge.setAttribute("end", String.valueOf(stopTime.getTime()));
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109 }
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110 else if (dt.getKind() == DischargeTables.MASTER) {
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111 long now = System.currentTimeMillis();
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112 discharge.setAttribute("end", String.valueOf(now));
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113 }
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114 else {
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115 continue;
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116 }
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117
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118 all.appendChild(discharge);
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119 }
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120 result.appendChild(all);
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121 return result;
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122 }
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123 }
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124 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org