ingo@301: package de.intevation.flys.artifacts.services; ingo@301: sascha@644: import java.util.Iterator; ingo@301: ingo@301: import org.apache.log4j.Logger; ingo@301: ingo@301: import org.w3c.dom.Document; ingo@301: import org.w3c.dom.Element; ingo@301: ingo@301: import de.intevation.artifacts.CallMeta; sascha@966: import de.intevation.artifacts.GlobalContext; ingo@301: ingo@301: import de.intevation.artifacts.common.ArtifactNamespaceContext; ingo@301: import de.intevation.artifacts.common.utils.XMLUtils; ingo@301: sascha@2145: import de.intevation.flys.model.FastAnnotations; ingo@301: sascha@2145: import de.intevation.flys.artifacts.model.LocationProvider; ingo@301: sascha@644: ingo@301: /** ingo@301: * This service provides information about distances of a specified river. ingo@301: * ingo@301: * @author Ingo Weinzierl ingo@301: */ ingo@1631: public class DistanceInfoService extends FLYSService { ingo@301: felix@1070: /** The logger used in this service. */ ingo@301: private static Logger logger = Logger.getLogger(DistanceInfoService.class); ingo@301: sascha@644: public static final String RIVER_XPATH = "/art:river/text()"; sascha@644: ingo@922: public static final String FILTER_XPATH = "/art:river/art:filter/text()"; ingo@922: ingo@301: ingo@301: /** ingo@301: * The default constructor. ingo@301: */ ingo@301: public DistanceInfoService() { ingo@301: } ingo@301: ingo@301: sascha@966: @Override ingo@1631: public Document doProcess( sascha@966: Document data, sascha@966: GlobalContext globalContext, sascha@966: CallMeta callMeta sascha@966: ) { ingo@301: logger.debug("DistanceInfoService.process"); ingo@301: ingo@301: String river = XMLUtils.xpathString( sascha@644: data, RIVER_XPATH, ArtifactNamespaceContext.INSTANCE); ingo@301: sascha@2145: String filterName = XMLUtils.xpathString( ingo@922: data, FILTER_XPATH, ArtifactNamespaceContext.INSTANCE); ingo@922: sascha@644: if (river == null || (river = river.trim()).length() == 0) { ingo@301: logger.warn("No river specified. Cannot return distance info!"); sascha@644: return XMLUtils.newDocument(); ingo@301: } ingo@301: ingo@301: logger.debug("Search distances for river: " + river); ingo@301: sascha@2145: FastAnnotations fas = LocationProvider.getAnnotations(river); sascha@644: sascha@2145: FastAnnotations.Filter filter = selectFilter(filterName); sascha@644: sascha@2145: return buildDocument(fas.filter(filter)); sascha@644: } sascha@644: sascha@2145: protected Document buildDocument( sascha@2145: Iterator iter sascha@2145: ) { sascha@644: Document result = XMLUtils.newDocument(); sascha@644: ingo@1631: Element all = result.createElement("distances"); ingo@922: ingo@1631: while (iter.hasNext()) { sascha@2145: all.appendChild(buildNode(result, iter.next())); ingo@301: } ingo@1631: ingo@1631: result.appendChild(all); ingo@301: ingo@301: return result; ingo@301: } ingo@301: sascha@2145: protected static FastAnnotations.Filter selectFilter(String name) { ingo@301: sascha@2145: if (name != null) { sascha@2145: if ("locations".equals(name)) return FastAnnotations.IS_POINT; sascha@2145: if ("distances".equals(name)) return FastAnnotations.IS_RANGE; ingo@922: } ingo@922: sascha@2145: return FastAnnotations.ALL; ingo@922: } ingo@922: ingo@301: /** felix@1070: * Builds an Element for a distance info. ingo@301: * sascha@2145: * @param an The Annotation that provides information about the distance. ingo@301: * ingo@301: * @return an Element that contains information about a distance. ingo@301: */ sascha@2145: protected static Element buildNode( sascha@2145: Document document, sascha@2145: FastAnnotations.Annotation an ingo@686: ) { ingo@686: Element distance = document.createElement("distance"); ingo@301: sascha@2145: distance.setAttribute("description", an.getPosition()); ingo@686: sascha@2145: String riverSide = an.getAttribute(); ingo@686: ingo@686: if (riverSide != null && riverSide.length() > 0) { ingo@686: distance.setAttribute("riverside", riverSide); ingo@686: } ingo@686: sascha@2145: distance.setAttribute("from", String.valueOf(an.getA())); sascha@2145: sascha@2145: double b = an.getB(); sascha@2145: double bottom = an.getBottom(); sascha@2145: double top = an.getTop(); sascha@2145: sascha@2145: if (!Double.isNaN(b)) { sascha@2145: distance.setAttribute("to", String.valueOf(b)); ingo@686: } sascha@2145: sascha@2145: if (!Double.isNaN(bottom)) { sascha@2145: distance.setAttribute("bottom", String.valueOf(bottom)); sascha@2145: } sascha@2145: sascha@2145: if (!Double.isNaN(top)) { sascha@2145: distance.setAttribute("top", String.valueOf(top)); ingo@686: } ingo@301: ingo@301: return distance; ingo@301: } ingo@301: } ingo@301: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :