Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/DistanceInfoService.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 | 9136fc8f35f0 |
children |
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package de.intevation.flys.artifacts.services; import java.util.Iterator; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Element; import de.intevation.artifacts.CallMeta; import de.intevation.artifacts.GlobalContext; import de.intevation.artifacts.common.ArtifactNamespaceContext; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.flys.model.FastAnnotations; import de.intevation.flys.artifacts.model.LocationProvider; /** * This service provides information about distances of a specified river. * * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class DistanceInfoService extends FLYSService { /** The logger used in this service. */ private static Logger logger = Logger.getLogger(DistanceInfoService.class); public static final String RIVER_XPATH = "/art:river/text()"; public static final String FILTER_XPATH = "/art:river/art:filter/text()"; /** * The default constructor. */ public DistanceInfoService() { } @Override public Document doProcess( Document data, GlobalContext globalContext, CallMeta callMeta ) { logger.debug("DistanceInfoService.process"); String river = XMLUtils.xpathString( data, RIVER_XPATH, ArtifactNamespaceContext.INSTANCE); String filterName = XMLUtils.xpathString( data, FILTER_XPATH, ArtifactNamespaceContext.INSTANCE); if (river == null || (river = river.trim()).length() == 0) { logger.warn("No river specified. Cannot return distance info!"); return XMLUtils.newDocument(); } logger.debug("Search distances for river: " + river); FastAnnotations fas = LocationProvider.getAnnotations(river); FastAnnotations.Filter filter = selectFilter(filterName); return buildDocument(fas.filter(filter)); } protected Document buildDocument( Iterator<FastAnnotations.Annotation> iter ) { Document result = XMLUtils.newDocument(); Element all = result.createElement("distances"); while (iter.hasNext()) { all.appendChild(buildNode(result, iter.next())); } result.appendChild(all); return result; } protected static FastAnnotations.Filter selectFilter(String name) { if (name != null) { if ("locations".equals(name)) return FastAnnotations.IS_POINT; if ("distances".equals(name)) return FastAnnotations.IS_RANGE; if ("measuringpoint".equals(name)) return new FastAnnotations.NameFilter("Messstelle"); } return FastAnnotations.ALL; } /** * Builds an Element for a distance info. * * @param an The Annotation that provides information about the distance. * * @return an Element that contains information about a distance. */ protected static Element buildNode( Document document, FastAnnotations.Annotation an ) { Element distance = document.createElement("distance"); distance.setAttribute("description", an.getPosition()); String riverSide = an.getAttribute(); if (riverSide != null && riverSide.length() > 0) { distance.setAttribute("riverside", riverSide); } distance.setAttribute("from", String.valueOf(an.getA())); double b = an.getB(); double bottom = an.getBottom(); double top = an.getTop(); if (!Double.isNaN(b)) { distance.setAttribute("to", String.valueOf(b)); } if (!Double.isNaN(bottom)) { distance.setAttribute("bottom", String.valueOf(bottom)); } if (!Double.isNaN(top)) { distance.setAttribute("top", String.valueOf(top)); } return distance; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :