Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/GaugeInfoService.java @ 4255:670e98f5a441
Fixed leak while merging facets.
The ThemeList that is used by OutputHelper to sort the
Facets for an Output now uses a list to store the ManagedFacets.
The correct order is made up by sorting the List using
Collections.sort() function of the Java JDK. Therfore, the
ManagedFacet class implements the Comparable interface. The
return value of its compareTo(other) method depends on the
value of the 'position' field.
author | Ingo Weinzierl <weinzierl.ingo@googlemail.com> |
---|---|
date | Thu, 25 Oct 2012 14:01:46 +0200 |
parents | 5e7da178daa6 |
children |
line wrap: on
line source
package de.intevation.flys.artifacts.services; import java.util.ArrayList; import java.util.List; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.apache.log4j.Logger; import de.intevation.artifacts.common.ArtifactNamespaceContext; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator; import de.intevation.artifacts.CallMeta; import de.intevation.artifacts.GlobalContext; import de.intevation.flys.model.Gauge; import de.intevation.flys.model.Range; import de.intevation.flys.model.River; import de.intevation.flys.artifacts.model.RiverFactory; /** * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class GaugeInfoService extends FLYSService { interface Filter { boolean apply(Gauge gauge); } private static final class ReferenceNumberFilter implements Filter { private long refNr; public ReferenceNumberFilter(long refNr) { this.refNr = refNr; } @Override public boolean apply(Gauge gauge) { if (logger.isDebugEnabled()) { logger.debug("Test gauge '" + gauge.getName() + "'"); } return gauge != null && gauge.getOfficialNumber() == refNr; } } // end of ReferenceNumberFilter class /** The logger that is used by this service.*/ private static Logger logger = Logger.getLogger(GaugeInfoService.class); public static final String XPATH_RIVERNAME = "/art:river/@name"; public static final String XPATH_REFERENCE_NR = "/art:river/art:filter/art:gauge/text()"; public GaugeInfoService() { } @Override public Document doProcess( Document data, GlobalContext context, CallMeta callMeta ) { logger.debug("GaugeInfoService.process"); if (logger.isDebugEnabled()) { logger.debug(XMLUtils.toString(data)); } River river = getRiverFromRequest(data); List<Filter> filters = getFilters(data); List<Gauge> allGauges = river.getGauges(); List<Gauge> filtered = new ArrayList<Gauge>(); for (Gauge g: allGauges) { for (Filter f: filters) { if (f.apply(g)) { filtered.add(g); break; } } } return buildInfoDocument(filtered); } protected River getRiverFromRequest(Document data) { String rivername = XMLUtils.xpathString( data, XPATH_RIVERNAME, ArtifactNamespaceContext.INSTANCE); logger.debug("Return Gauge info for River '" + rivername + "'"); return rivername != null ? RiverFactory.getRiver(rivername) : null; } protected List<Filter> getFilters(Document data) { List<Filter> filters = new ArrayList<Filter>(); String refNr = XMLUtils.xpathString( data, XPATH_REFERENCE_NR, ArtifactNamespaceContext.INSTANCE); if (refNr != null && refNr.length() > 0) { try { filters.add( new ReferenceNumberFilter(Long.parseLong(refNr))); } catch (NumberFormatException nfe) { logger.warn(nfe, nfe); } } return filters; } protected Document buildInfoDocument(List<Gauge> gauges) { Document doc = XMLUtils.newDocument(); ElementCreator cr = new ElementCreator( doc, ArtifactNamespaceContext.NAMESPACE_URI, ArtifactNamespaceContext.NAMESPACE_PREFIX); Element service = cr.create("service"); logger.debug("Append " + gauges.size() + " gauges to info doc."); for (Gauge g: gauges) { Range r = g.getRange(); Element el = cr.create("gauge"); cr.addAttr(el, "name", g.getName()); cr.addAttr(el, "lower", String.valueOf(r.getA().doubleValue())); cr.addAttr(el, "upper", String.valueOf(r.getB().doubleValue())); service.appendChild(el); } doc.appendChild(service); return doc; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :