Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/DischargeInfoService.java @ 4183:1755a1bfe5ce

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Merged
author Christian Lins <christian.lins@intevation.de>
date Fri, 19 Oct 2012 09:20:52 +0200
parents 0cc2c3d89a9d
children 810db532803a
rev   line source
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
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1 package de.intevation.flys.artifacts.services;
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2
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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