bjoern@3739: package de.intevation.flys.artifacts.services;
bjoern@3739: 
bjoern@3739: import java.math.BigDecimal;
bjoern@3739: import java.util.List;
bjoern@3739: 
bjoern@3739: import org.apache.log4j.Logger;
bjoern@3739: 
bjoern@3739: import org.w3c.dom.Document;
bjoern@3739: import org.w3c.dom.Element;
bjoern@3739: 
bjoern@3739: import de.intevation.artifacts.CallMeta;
bjoern@3739: import de.intevation.artifacts.GlobalContext;
bjoern@3739: import de.intevation.artifacts.common.ArtifactNamespaceContext;
bjoern@3739: import de.intevation.artifacts.common.utils.XMLUtils;
bjoern@3739: 
bjoern@3739: import de.intevation.flys.artifacts.model.RiverFactory;
bjoern@3739: import de.intevation.flys.model.Gauge;
bjoern@3739: import de.intevation.flys.model.MinMaxWQ;
bjoern@3739: import de.intevation.flys.model.Range;
bjoern@3739: import de.intevation.flys.model.River;
bjoern@3739: 
bjoern@3739: /**
bjoern@3739:  * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a>
bjoern@3739:  */
bjoern@3739: public class GaugeOverviewInfoService extends FLYSService {
bjoern@3739: 
bjoern@3739:     private static final Logger logger = Logger.getLogger(
bjoern@3739:             GaugeOverviewInfoService.class);
bjoern@3739: 
bjoern@3739:     public static final String RIVER_XPATH = "/art:river/text()";
bjoern@3739: 
bjoern@3739:     @Override
bjoern@3739:     public Document doProcess(
bjoern@3739:         Document      data,
bjoern@3739:         GlobalContext globalContext,
bjoern@3739:         CallMeta      callMeta
bjoern@3739:     ) {
bjoern@3739:         logger.debug("GaugeOverviewInfoService.process");
bjoern@3739: 
bjoern@3739:         String riverstr = XMLUtils.xpathString(
bjoern@3739:             data, RIVER_XPATH, ArtifactNamespaceContext.INSTANCE);
bjoern@3739: 
bjoern@3739:         River river = RiverFactory.getRiver(riverstr);
bjoern@3739: 
bjoern@3739:         Document result = XMLUtils.newDocument();
bjoern@3739: 
bjoern@3739:         if (river == null) {
bjoern@3739:             logger.warn("No river with name " + riverstr + " found.");
bjoern@3739:             return result;
bjoern@3739:         }
bjoern@3739: 
bjoern@3739:         XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
bjoern@3739:             result,
bjoern@3739:             ArtifactNamespaceContext.NAMESPACE_URI,
bjoern@3739:             ArtifactNamespaceContext.NAMESPACE_PREFIX);
bjoern@3739: 
bjoern@3739:         Element go = ec.create("gauge-info");
bjoern@3739: 
bjoern@3753:         double[] minmax  = river.determineMinMaxDistance();
bjoern@3753:         double[] minmaxq = river.determineMinMaxQ();
bjoern@3739: 
bjoern@3739:         Element r = ec.create("river");
bjoern@3739:         ec.addAttr(r, "name", river.getName(), true);
bjoern@3739:         ec.addAttr(r, "start", Double.toString(minmax[0]), true);
bjoern@3739:         ec.addAttr(r, "end", Double.toString(minmax[1]), true);
bjoern@3739:         ec.addAttr(r, "wstunit", river.getWstUnit().getName(), true);
bjoern@3739:         ec.addAttr(r, "kmup", Boolean.toString(river.getKmUp()), true);
bjoern@3753:         ec.addAttr(r, "minq", Double.toString(minmaxq[0]), true);
bjoern@3753:         ec.addAttr(r, "maxq", Double.toString(minmaxq[1]), true);
bjoern@3739: 
bjoern@3739:         Element egs = ec.create("gauges");
bjoern@3739: 
bjoern@3739:         List<Gauge> gauges = river.getGauges();
sascha@3748: 
sascha@3748:         if (logger.isDebugEnabled()) {
sascha@3748:             logger.debug("Loaded gauges: " + gauges);
sascha@3748:         }
sascha@3748: 
bjoern@3739:         for (Gauge gauge: river.getGauges()) {
bjoern@3739:             Element eg = ec.create("gauge");
sascha@3748: 
bjoern@3739:             String name = gauge.getName();
bjoern@3739:             if (name != null) {
bjoern@3739:                 ec.addAttr(eg, "name", gauge.getName(), true);
bjoern@3739:             }
bjoern@3739: 
sascha@3748:             String aeo = getGaugeValue(gauge.getAeo());
sascha@3748:             if (aeo != null) {
sascha@3748:                 ec.addAttr(eg, "aeo", aeo, true);
sascha@3748:             }
sascha@3748: 
sascha@3748:             String datum = getGaugeValue(gauge.getDatum());
sascha@3748:             if (datum != null) {
sascha@3748:                 ec.addAttr(eg, "datum", datum, true);
sascha@3748:             }
sascha@3748: 
bjoern@3739:             Range range = gauge.getRange();
bjoern@3739:             if (range != null) {
bjoern@3753:                 BigDecimal a = range.getA();
bjoern@3753:                 if (a != null) {
bjoern@3753:                     double min = a.doubleValue();
bjoern@3753:                     ec.addAttr(eg, "start", Double.toString(min), true);
bjoern@3753:                 }
bjoern@3739: 
bjoern@3739:                 BigDecimal b = range.getB();
bjoern@3739:                 if (b != null) {
bjoern@3739:                     double max = range.getB().doubleValue();
bjoern@3739:                     ec.addAttr(eg, "end", Double.toString(max), true);
bjoern@3739:                 }
bjoern@3739:             }
bjoern@3739:             MinMaxWQ minmaxwq = gauge.fetchMaxMinWQ();
bjoern@3739:             String minw = getGaugeValue(minmaxwq.getMinW());
bjoern@3739:             String maxw = getGaugeValue(minmaxwq.getMaxW());
bjoern@3739:             String minq = getGaugeValue(minmaxwq.getMinQ());
bjoern@3739:             String maxq = getGaugeValue(minmaxwq.getMaxQ());
bjoern@3739: 
bjoern@3739:             if (minw != null) {
bjoern@3739:                 ec.addAttr(eg, "minw", minw, true);
bjoern@3739:             }
bjoern@3739:             if (maxw != null) {
bjoern@3739:                 ec.addAttr(eg, "maxw", maxw, true);
bjoern@3739:             }
bjoern@3739:             if (minq != null) {
bjoern@3739:                 ec.addAttr(eg, "minq", minq, true);
bjoern@3739:             }
bjoern@3739:             if (maxq != null) {
bjoern@3739:                 ec.addAttr(eg, "maxq", maxq, true);
bjoern@3739:             }
bjoern@3739: 
bjoern@3739:             egs.appendChild(eg);
bjoern@3739:         }
bjoern@3739: 
bjoern@3739:         go.appendChild(r);
bjoern@3739:         go.appendChild(egs);
bjoern@3739:         result.appendChild(go);
bjoern@3739: 
bjoern@3739:         return result;
bjoern@3739:     }
bjoern@3739: 
bjoern@3747:     /**
bjoern@3747:      * Returns a Double from a BigDecimal value or null if value is null
bjoern@3747:      */
sascha@3748:     private static String getGaugeValue(BigDecimal value) {
sascha@3748:         return value != null
sascha@3748:             ? Double.toString(value.doubleValue())
sascha@3748:             : "";
bjoern@3739:     }
bjoern@3739: }