Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MeasurementStationInfoService.java @ 4246:cac0878b4a92
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 |
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| 4245:6302db90b63f | 4246:cac0878b4a92 |
|---|---|
| 1 package de.intevation.flys.artifacts.services; | |
| 2 | |
| 3 import java.math.BigDecimal; | |
| 4 import java.util.List; | |
| 5 | |
| 6 import org.apache.log4j.Logger; | |
| 7 | |
| 8 import org.w3c.dom.Document; | |
| 9 import org.w3c.dom.Element; | |
| 10 | |
| 11 import de.intevation.artifacts.CallMeta; | |
| 12 import de.intevation.artifacts.GlobalContext; | |
| 13 import de.intevation.artifacts.common.ArtifactNamespaceContext; | |
| 14 import de.intevation.artifacts.common.utils.XMLUtils; | |
| 15 | |
| 16 import de.intevation.flys.artifacts.model.RiverFactory; | |
| 17 import de.intevation.flys.model.MeasurementStation; | |
| 18 import de.intevation.flys.model.Range; | |
| 19 import de.intevation.flys.model.River; | |
| 20 | |
| 21 /** | |
| 22 * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a> | |
| 23 */ | |
| 24 public class MeasurementStationInfoService extends FLYSService { | |
| 25 | |
| 26 private static final Logger logger = Logger.getLogger( | |
| 27 GaugeOverviewInfoService.class); | |
| 28 | |
| 29 public static final String RIVER_XPATH = "/art:river/text()"; | |
| 30 | |
| 31 @Override | |
| 32 public Document doProcess( | |
| 33 Document data, | |
| 34 GlobalContext globalContext, | |
| 35 CallMeta callMeta | |
| 36 ) { | |
| 37 logger.debug("MeasurementStationInfoService.process"); | |
| 38 | |
| 39 String riverstr = XMLUtils.xpathString( | |
| 40 data, RIVER_XPATH, ArtifactNamespaceContext.INSTANCE); | |
| 41 | |
| 42 River river = RiverFactory.getRiver(riverstr); | |
| 43 | |
| 44 Document result = XMLUtils.newDocument(); | |
| 45 | |
| 46 if (river == null) { | |
| 47 logger.warn("No river with name " + riverstr + " found."); | |
| 48 return result; | |
| 49 } | |
| 50 | |
| 51 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( | |
| 52 result, | |
| 53 ArtifactNamespaceContext.NAMESPACE_URI, | |
| 54 ArtifactNamespaceContext.NAMESPACE_PREFIX); | |
| 55 | |
| 56 Element go = ec.create("masurement-station-info"); | |
| 57 | |
| 58 double[] minmax = river.determineMinMaxDistance(); | |
| 59 double[] minmaxq = river.determineMinMaxQ(); | |
| 60 | |
| 61 Element r = ec.create("river"); | |
| 62 ec.addAttr(r, "name", river.getName(), true); | |
| 63 ec.addAttr(r, "start", Double.toString(minmax[0]), true); | |
| 64 ec.addAttr(r, "end", Double.toString(minmax[1]), true); | |
| 65 ec.addAttr(r, "wstunit", river.getWstUnit().getName(), true); | |
| 66 ec.addAttr(r, "kmup", Boolean.toString(river.getKmUp()), true); | |
| 67 ec.addAttr(r, "minq", Double.toString(minmaxq[0]), true); | |
| 68 ec.addAttr(r, "maxq", Double.toString(minmaxq[1]), true); | |
| 69 ec.addAttr(r, "official", Long.toString(river.getOfficialNumber()), | |
| 70 true); | |
| 71 | |
| 72 Element egs = ec.create("measurement-stations"); | |
| 73 | |
| 74 List<MeasurementStation> mstations = river.getMeasurementStations(); | |
| 75 | |
| 76 if (logger.isDebugEnabled()) { | |
| 77 logger.debug("Loaded stations: " + mstations); | |
| 78 } | |
| 79 | |
| 80 for (MeasurementStation mstation: mstations) { | |
| 81 Element eg = ec.create("measurement-station"); | |
| 82 | |
| 83 String name = mstation.getName(); | |
| 84 if (name != null) { | |
| 85 ec.addAttr(eg, "name", name, true); | |
| 86 } | |
| 87 | |
| 88 String type = mstation.getMeasurementType(); | |
| 89 if (type != null) { | |
| 90 ec.addAttr(eg, "type", type, true); | |
| 91 } | |
| 92 | |
| 93 String riverside = mstation.getRiverside(); | |
| 94 if (riverside != null) { | |
| 95 ec.addAttr(eg, "riverside", riverside, true); | |
| 96 } | |
| 97 | |
| 98 Double station = mstation.getStation(); | |
| 99 if (station != null) { | |
| 100 ec.addAttr(eg, "station", Double.toString(station), true); | |
| 101 } | |
| 102 | |
| 103 Range range = mstation.getRange(); | |
| 104 if (range != null) { | |
| 105 BigDecimal a = range.getA(); | |
| 106 if (a != null) { | |
| 107 ec.addAttr(eg, "start", getStringValue(a), true); | |
| 108 } | |
| 109 | |
| 110 BigDecimal b = range.getB(); | |
| 111 if (b != null) { | |
| 112 ec.addAttr(eg, "end", getStringValue(b), true); | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 egs.appendChild(eg); | |
| 117 } | |
| 118 | |
| 119 go.appendChild(r); | |
| 120 go.appendChild(egs); | |
| 121 result.appendChild(go); | |
| 122 | |
| 123 return result; | |
| 124 } | |
| 125 | |
| 126 /** | |
| 127 * Returns a Double as String from a BigDecimal value. | |
| 128 * | |
| 129 * If value is null an empty String is returned. | |
| 130 */ | |
| 131 private static String getStringValue(BigDecimal value) { | |
| 132 return value != null | |
| 133 ? Double.toString(value.doubleValue()) : ""; | |
| 134 } | |
| 135 } |