view artifacts/src/main/java/org/dive4elements/river/artifacts/WMSHWSPointsArtifact.java @ 8755:30b1ddadf275

(issue1801) Unify reference gauge finding code The basic way as described in the method comment of the determineRefGauge method is now used in the WINFOArtifact, MainValuesService and RiverUtils.getGauge method. RiverUtils.getGauge previously just returned the first gauge found. While this is now a behavior change I believe that it is always more correct then the undeterministic behavior of the previous implmenentation.
author Andre Heinecke <andre.heinecke@intevation.de>
date Wed, 24 Jun 2015 14:07:26 +0200
parents e4606eae8ea5
children 5e38e2924c07
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
 * Software engineering by Intevation GmbH
 *
 * This file is Free Software under the GNU AGPL (>=v3)
 * and comes with ABSOLUTELY NO WARRANTY! Check out the
 * documentation coming with Dive4Elements River for details.
 */

package org.dive4elements.river.artifacts;

import java.util.List;

import org.apache.log4j.Logger;

import com.vividsolutions.jts.geom.Envelope;

import org.dive4elements.artifactdatabase.state.DefaultOutput;
import org.dive4elements.artifactdatabase.state.Facet;
import org.dive4elements.artifactdatabase.state.State;

import org.dive4elements.river.model.HWSPoint;
import org.dive4elements.river.model.River;

import org.dive4elements.river.artifacts.model.FacetTypes;
import org.dive4elements.river.artifacts.model.RiverFactory;
import org.dive4elements.river.utils.RiverUtils;
import org.dive4elements.river.utils.GeometryUtils;


public class WMSHWSPointsArtifact extends WMSDBArtifact {

    public static final String NAME = "hws_points";


    private static final Logger log =
        Logger.getLogger(WMSHWSPointsArtifact.class);


    @Override
    public String getName() {
        return NAME;
    }


    @Override
    public State getCurrentState(Object cc) {
        State s = new HWSPointsState(this);

        List<Facet> fs = getFacets(getCurrentStateId());

        DefaultOutput o = new DefaultOutput(
            "floodmap",
            "floodmap",
            "image/png",
            fs,
            "map");

        s.getOutputs().add(o);

        return s;
    }


    public static class HWSPointsState extends WMSDBState implements FacetTypes
    {
        private static final Logger log =
            Logger.getLogger(HWSPointsState.class);

        protected int riverId;

        public HWSPointsState(WMSDBArtifact artifact) {
            super(artifact);
            riverId = 0;
        }

        public int getRiverId() {
            if (riverId == 0) {
                String   ids   = artifact.getDataAsString("ids");
                String[] parts = ids.split(";");

                try {
                    riverId = Integer.parseInt(parts[0]);
                }
                catch (NumberFormatException nfe) {
                    log.error("Cannot parse river id from '" + parts[0] + "'");
                }
            }

            return riverId;
        }

        @Override
        protected String getFacetType() {
            return FLOODMAP_HWS_POINTS;
        }

        @Override
        protected String getUrl() {
            return RiverUtils.getUserWMSUrl(artifact.identifier());
        }

        @Override
        protected String getSrid() {
            River river = RiverFactory.getRiver(getRiverId());
            return RiverUtils.getRiverSrid(river.getName());
        }

        @Override
        protected Envelope getExtent(boolean reproject) {
            List<HWSPoint> hws = HWSPoint.getPoints(getRiverId(), getName());

            Envelope max = null;

            for (HWSPoint h: hws) {
                Envelope env = h.getGeom().getEnvelopeInternal();

                if (max == null) {
                    max = env;
                    continue;
                }

                max.expandToInclude(env);
            }

            return max != null && reproject
                ? GeometryUtils.transform(max, getSrid())
                : max;
        }

        @Override
        protected String getFilter() {
            return "river_id=" + String.valueOf(getRiverId())
                + " AND name='" + getName() + "'";
        }

        @Override
        protected String getDataString() {
            String srid = getSrid();

            if (RiverUtils.isUsingOracle()) {
                return "geom FROM hws_points USING SRID " + srid;
            }
            else {
                return "geom FROM hws_points USING UNIQUE id USING SRID " + srid;
            }
        }

        @Override
        protected String getGeometryType() {
            return "POINT";
        }
    }
}
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