Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/DischargeInfoService.java @ 2566:8bacd0ce3704
Partial fix flys/issue637 (wording).
flys-artifacts/trunk@4092 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Mon, 27 Feb 2012 09:09:54 +0000 |
parents | 2966787b5188 |
children | e96bf6c47c12 |
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.List; |
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4 import java.util.Date; |
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5 import java.util.Calendar; |
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6 import java.util.GregorianCalendar; |
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7 |
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8 import org.apache.log4j.Logger; |
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9 |
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10 import org.w3c.dom.Document; |
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11 import org.w3c.dom.Element; |
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12 |
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13 import de.intevation.artifacts.CallMeta; |
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14 import de.intevation.artifacts.GlobalContext; |
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15 |
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16 import de.intevation.artifacts.common.ArtifactNamespaceContext; |
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17 import de.intevation.artifacts.common.utils.XMLUtils; |
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18 |
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19 import de.intevation.flys.model.Gauge; |
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20 import de.intevation.flys.model.DischargeTable; |
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21 import de.intevation.flys.model.TimeInterval; |
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22 |
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23 /** |
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24 * This service provides information about discharges at a defined gauge. |
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25 * |
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26 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> |
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27 */ |
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28 public class DischargeInfoService extends FLYSService { |
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29 |
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30 /** The logger used in this service. */ |
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31 private static Logger logger = Logger.getLogger(DischargeInfoService.class); |
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32 |
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33 public static final String GAUGE_XPATH = "/art:gauge/text()"; |
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34 |
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35 public DischargeInfoService() { |
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36 } |
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37 |
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38 |
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39 @Override |
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40 public Document doProcess( |
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41 Document data, |
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42 GlobalContext globalContext, |
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43 CallMeta callMeta |
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44 ) { |
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45 logger.debug("DischargeInfoService.process"); |
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46 |
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47 String gaugeNumber = XMLUtils.xpathString( |
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48 data, GAUGE_XPATH, ArtifactNamespaceContext.INSTANCE); |
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49 |
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50 if(gaugeNumber == null || |
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51 (gaugeNumber = gaugeNumber.trim()).length() == 0) { |
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52 logger.warn("No gauge specified. Cannot return discharge info."); |
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53 return XMLUtils.newDocument(); |
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54 } |
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55 |
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56 logger.debug("Getting discharge for gauge: " + gaugeNumber); |
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57 |
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58 long gn; |
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59 try { |
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60 gn = Long.parseLong(gaugeNumber); |
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61 } |
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62 catch (NumberFormatException nfe) { |
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63 logger.warn("Invalid gauge number. Cannot return discharg info."); |
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64 return XMLUtils.newDocument(); |
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65 } |
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66 |
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67 Gauge gauge = Gauge.getGaugeByOfficialNumber(gn); |
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68 |
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69 logger.debug("Found gauge: " + gauge.getName()); |
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70 |
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71 return buildDocument(gauge); |
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72 } |
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73 |
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74 |
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75 protected Document buildDocument(Gauge gauge) { |
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76 Document result = XMLUtils.newDocument(); |
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77 |
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78 List<DischargeTable> tables =gauge.getDischargeTables(); |
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79 |
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80 Element all = result.createElement("discharges"); |
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81 for (DischargeTable dt: tables) { |
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82 Element discharge = result.createElement("discharge"); |
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83 discharge.setAttribute("description", dt.getDescription()); |
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84 |
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85 // Get time interval. |
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86 TimeInterval ti = dt.getTimeInterval(); |
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87 Date startTime = ti.getStartTime(); |
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88 Date stopTime = ti.getStopTime(); |
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89 |
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90 // Get the year for start end end date. |
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91 int startYear; |
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92 int stopYear; |
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93 Calendar c = new GregorianCalendar(); |
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94 if (startTime != null) { |
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95 c.setTime(startTime); |
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96 startYear = c.get(Calendar.YEAR); |
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97 } |
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98 else { |
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99 startYear = -1; |
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100 } |
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101 if (stopTime != null) { |
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102 c.setTime(stopTime); |
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103 stopYear = c.get(Calendar.YEAR); |
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104 } |
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105 else { |
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106 stopYear = -1; |
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107 } |
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108 |
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109 discharge.setAttribute("start", String.valueOf(startYear)); |
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110 discharge.setAttribute("end", String.valueOf(stopYear)); |
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111 |
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112 all.appendChild(discharge); |
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113 } |
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114 result.appendChild(all); |
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115 return result; |
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116 } |
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117 } |