bjoern@4246: package de.intevation.flys.artifacts.services;
bjoern@4246: 
bjoern@4246: import java.math.BigDecimal;
bjoern@4246: import java.util.List;
bjoern@4246: 
bjoern@4246: import org.apache.log4j.Logger;
bjoern@4246: 
bjoern@4246: import org.w3c.dom.Document;
bjoern@4246: import org.w3c.dom.Element;
bjoern@4246: 
bjoern@4246: import de.intevation.artifacts.CallMeta;
bjoern@4246: import de.intevation.artifacts.GlobalContext;
bjoern@4246: import de.intevation.artifacts.common.ArtifactNamespaceContext;
bjoern@4246: import de.intevation.artifacts.common.utils.XMLUtils;
bjoern@4246: 
bjoern@4246: import de.intevation.flys.artifacts.model.RiverFactory;
bjoern@4246: import de.intevation.flys.model.MeasurementStation;
bjoern@4246: import de.intevation.flys.model.Range;
bjoern@4246: import de.intevation.flys.model.River;
bjoern@4246: 
bjoern@4246: /**
bjoern@4246:  * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a>
bjoern@4246:  */
bjoern@4246: public class MeasurementStationInfoService extends FLYSService {
bjoern@4246: 
bjoern@4246:     private static final Logger logger = Logger.getLogger(
bjoern@4246:             GaugeOverviewInfoService.class);
bjoern@4246: 
bjoern@4246:     public static final String RIVER_XPATH = "/art:river/text()";
bjoern@4246: 
bjoern@4246:     @Override
bjoern@4246:     public Document doProcess(
bjoern@4246:         Document      data,
bjoern@4246:         GlobalContext globalContext,
bjoern@4246:         CallMeta      callMeta
bjoern@4246:     ) {
bjoern@4246:         logger.debug("MeasurementStationInfoService.process");
bjoern@4246: 
bjoern@4246:         String riverstr = XMLUtils.xpathString(
bjoern@4246:             data, RIVER_XPATH, ArtifactNamespaceContext.INSTANCE);
bjoern@4246: 
bjoern@4246:         River river = RiverFactory.getRiver(riverstr);
bjoern@4246: 
bjoern@4246:         Document result = XMLUtils.newDocument();
bjoern@4246: 
bjoern@4246:         if (river == null) {
bjoern@4246:             logger.warn("No river with name " + riverstr + " found.");
bjoern@4246:             return result;
bjoern@4246:         }
bjoern@4246: 
bjoern@4246:         XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
bjoern@4246:             result,
bjoern@4246:             ArtifactNamespaceContext.NAMESPACE_URI,
bjoern@4246:             ArtifactNamespaceContext.NAMESPACE_PREFIX);
bjoern@4246: 
bjoern@4246:         Element go = ec.create("masurement-station-info");
bjoern@4246: 
bjoern@4246:         double[] minmax  = river.determineMinMaxDistance();
bjoern@4246:         double[] minmaxq = river.determineMinMaxQ();
bjoern@4246: 
bjoern@4246:         Element r = ec.create("river");
bjoern@4246:         ec.addAttr(r, "name", river.getName(), true);
bjoern@4246:         ec.addAttr(r, "start", Double.toString(minmax[0]), true);
bjoern@4246:         ec.addAttr(r, "end", Double.toString(minmax[1]), true);
bjoern@4246:         ec.addAttr(r, "wstunit", river.getWstUnit().getName(), true);
bjoern@4246:         ec.addAttr(r, "kmup", Boolean.toString(river.getKmUp()), true);
bjoern@4246:         ec.addAttr(r, "minq", Double.toString(minmaxq[0]), true);
bjoern@4246:         ec.addAttr(r, "maxq", Double.toString(minmaxq[1]), true);
bjoern@4246:         ec.addAttr(r, "official", Long.toString(river.getOfficialNumber()),
bjoern@4246:                     true);
bjoern@4246: 
bjoern@4246:         Element egs = ec.create("measurement-stations");
bjoern@4246: 
bjoern@4246:         List<MeasurementStation> mstations = river.getMeasurementStations();
bjoern@4246: 
bjoern@4246:         if (logger.isDebugEnabled()) {
bjoern@4246:             logger.debug("Loaded stations: " + mstations);
bjoern@4246:         }
bjoern@4246: 
bjoern@4246:         for (MeasurementStation mstation: mstations) {
bjoern@4246:             Element eg = ec.create("measurement-station");
bjoern@4246: 
bjoern@4246:             String name = mstation.getName();
bjoern@4246:             if (name != null) {
bjoern@4246:                 ec.addAttr(eg, "name", name, true);
bjoern@4246:             }
bjoern@4246: 
bjoern@4246:             String type = mstation.getMeasurementType();
bjoern@4246:             if (type != null) {
bjoern@4246:                 ec.addAttr(eg, "type", type, true);
bjoern@4246:             }
bjoern@4246: 
bjoern@4246:             String riverside = mstation.getRiverside();
bjoern@4246:             if (riverside != null) {
bjoern@4246:                 ec.addAttr(eg, "riverside", riverside, true);
bjoern@4246:             }
bjoern@4246: 
bjoern@4246:             Double station = mstation.getStation();
bjoern@4246:             if (station != null) {
bjoern@4246:                 ec.addAttr(eg, "station", Double.toString(station), true);
bjoern@4246:             }
bjoern@4246: 
bjoern@4246:             Range range = mstation.getRange();
bjoern@4246:             if (range != null) {
bjoern@4246:                 BigDecimal a = range.getA();
bjoern@4246:                 if (a != null) {
bjoern@4246:                     ec.addAttr(eg, "start", getStringValue(a), true);
bjoern@4246:                 }
bjoern@4246: 
bjoern@4246:                 BigDecimal b = range.getB();
bjoern@4246:                 if (b != null) {
bjoern@4246:                     ec.addAttr(eg, "end", getStringValue(b), true);
bjoern@4246:                 }
bjoern@4246:             }
bjoern@4246: 
bjoern@4246:             egs.appendChild(eg);
bjoern@4246:         }
bjoern@4246: 
bjoern@4246:         go.appendChild(r);
bjoern@4246:         go.appendChild(egs);
bjoern@4246:         result.appendChild(go);
bjoern@4246: 
bjoern@4246:         return result;
bjoern@4246:     }
bjoern@4246: 
bjoern@4246:     /**
bjoern@4246:      * Returns a Double as String from a BigDecimal value.
bjoern@4246:      *
bjoern@4246:      * If value is null an empty String is returned.
bjoern@4246:      */
bjoern@4246:     private static String getStringValue(BigDecimal value) {
bjoern@4246:         return value != null
bjoern@4246:             ? Double.toString(value.doubleValue()) : "";
bjoern@4246:     }
bjoern@4246: }