Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/DischargeInfoService.java @ 2276:2966787b5188
Added service for discharge infos at a specific gauge.
flys-artifacts/trunk@3935 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Raimund Renkert <raimund.renkert@intevation.de> |
|---|---|
| date | Mon, 06 Feb 2012 15:37:54 +0000 |
| parents | |
| children | e96bf6c47c12 |
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| 2275:30335ee9512b | 2276:2966787b5188 |
|---|---|
| 1 package de.intevation.flys.artifacts.services; | |
| 2 | |
| 3 import java.util.List; | |
| 4 import java.util.Date; | |
| 5 import java.util.Calendar; | |
| 6 import java.util.GregorianCalendar; | |
| 7 | |
| 8 import org.apache.log4j.Logger; | |
| 9 | |
| 10 import org.w3c.dom.Document; | |
| 11 import org.w3c.dom.Element; | |
| 12 | |
| 13 import de.intevation.artifacts.CallMeta; | |
| 14 import de.intevation.artifacts.GlobalContext; | |
| 15 | |
| 16 import de.intevation.artifacts.common.ArtifactNamespaceContext; | |
| 17 import de.intevation.artifacts.common.utils.XMLUtils; | |
| 18 | |
| 19 import de.intevation.flys.model.Gauge; | |
| 20 import de.intevation.flys.model.DischargeTable; | |
| 21 import de.intevation.flys.model.TimeInterval; | |
| 22 | |
| 23 /** | |
| 24 * This service provides information about discharges at a defined gauge. | |
| 25 * | |
| 26 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> | |
| 27 */ | |
| 28 public class DischargeInfoService extends FLYSService { | |
| 29 | |
| 30 /** The logger used in this service. */ | |
| 31 private static Logger logger = Logger.getLogger(DischargeInfoService.class); | |
| 32 | |
| 33 public static final String GAUGE_XPATH = "/art:gauge/text()"; | |
| 34 | |
| 35 public DischargeInfoService() { | |
| 36 } | |
| 37 | |
| 38 | |
| 39 @Override | |
| 40 public Document doProcess( | |
| 41 Document data, | |
| 42 GlobalContext globalContext, | |
| 43 CallMeta callMeta | |
| 44 ) { | |
| 45 logger.debug("DischargeInfoService.process"); | |
| 46 | |
| 47 String gaugeNumber = XMLUtils.xpathString( | |
| 48 data, GAUGE_XPATH, ArtifactNamespaceContext.INSTANCE); | |
| 49 | |
| 50 if(gaugeNumber == null || | |
| 51 (gaugeNumber = gaugeNumber.trim()).length() == 0) { | |
| 52 logger.warn("No gauge specified. Cannot return discharge info."); | |
| 53 return XMLUtils.newDocument(); | |
| 54 } | |
| 55 | |
| 56 logger.debug("Getting discharge for gauge: " + gaugeNumber); | |
| 57 | |
| 58 long gn; | |
| 59 try { | |
| 60 gn = Long.parseLong(gaugeNumber); | |
| 61 } | |
| 62 catch (NumberFormatException nfe) { | |
| 63 logger.warn("Invalid gauge number. Cannot return discharg info."); | |
| 64 return XMLUtils.newDocument(); | |
| 65 } | |
| 66 | |
| 67 Gauge gauge = Gauge.getGaugeByOfficialNumber(gn); | |
| 68 | |
| 69 logger.debug("Found gauge: " + gauge.getName()); | |
| 70 | |
| 71 return buildDocument(gauge); | |
| 72 } | |
| 73 | |
| 74 | |
| 75 protected Document buildDocument(Gauge gauge) { | |
| 76 Document result = XMLUtils.newDocument(); | |
| 77 | |
| 78 List<DischargeTable> tables =gauge.getDischargeTables(); | |
| 79 | |
| 80 Element all = result.createElement("discharges"); | |
| 81 for (DischargeTable dt: tables) { | |
| 82 Element discharge = result.createElement("discharge"); | |
| 83 discharge.setAttribute("description", dt.getDescription()); | |
| 84 | |
| 85 // Get time interval. | |
| 86 TimeInterval ti = dt.getTimeInterval(); | |
| 87 Date startTime = ti.getStartTime(); | |
| 88 Date stopTime = ti.getStopTime(); | |
| 89 | |
| 90 // Get the year for start end end date. | |
| 91 int startYear; | |
| 92 int stopYear; | |
| 93 Calendar c = new GregorianCalendar(); | |
| 94 if (startTime != null) { | |
| 95 c.setTime(startTime); | |
| 96 startYear = c.get(Calendar.YEAR); | |
| 97 } | |
| 98 else { | |
| 99 startYear = -1; | |
| 100 } | |
| 101 if (stopTime != null) { | |
| 102 c.setTime(stopTime); | |
| 103 stopYear = c.get(Calendar.YEAR); | |
| 104 } | |
| 105 else { | |
| 106 stopYear = -1; | |
| 107 } | |
| 108 | |
| 109 discharge.setAttribute("start", String.valueOf(startYear)); | |
| 110 discharge.setAttribute("end", String.valueOf(stopYear)); | |
| 111 | |
| 112 all.appendChild(discharge); | |
| 113 } | |
| 114 result.appendChild(all); | |
| 115 return result; | |
| 116 } | |
| 117 } |