view flys-artifacts/src/main/java/de/intevation/flys/artifacts/ExternalWMSArtifact.java @ 4241:49cb65d5932d

Improved the historical discharge calculation. The calculation now creates new HistoricalWQKms (new subclass of WQKms). Those WQKms are used to create new facets from (new) type 'HistoricalDischargeCurveFacet'. The chart generator is improved to support those facets.
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 24 Oct 2012 14:34:35 +0200
parents 063b784b60b4
children a2735a4bf75e
line wrap: on
line source
package de.intevation.flys.artifacts;

import java.util.ArrayList;
import java.util.List;

import org.apache.log4j.Logger;

import org.w3c.dom.Document;

import de.intevation.artifacts.Artifact;
import de.intevation.artifacts.ArtifactFactory;
import de.intevation.artifacts.CallMeta;

import de.intevation.artifactdatabase.state.DefaultOutput;
import de.intevation.artifactdatabase.state.Facet;
import de.intevation.artifactdatabase.state.State;

import de.intevation.flys.artifacts.states.WMSBackgroundState;


public class ExternalWMSArtifact extends StaticFLYSArtifact {

    public static final String NAME = "external_wms";

    private static final Logger logger =
        Logger.getLogger(ExternalWMSArtifact.class);


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


    @Override
    public void setup(
        String          identifier,
        ArtifactFactory factory,
        Object          context,
        CallMeta        callMeta,
        Document        data)
    {
        logger.info("ExternalWMSArtifact.setup");

        super.setup(identifier, factory, context, callMeta, data);

        String ids = getDatacageIDValue(data);

        if (ids != null && ids.length() > 0) {
            addStringData("ids", ids);
        }
        else {
            throw new IllegalArgumentException("No attribute 'ids' found!");
        }

        List<Facet> fs = new ArrayList<Facet>();

        WMSBackgroundState s = (WMSBackgroundState) getCurrentState(context);
        s.computeInit(this, hash(), context, callMeta, fs);

        if (!fs.isEmpty()) {
            facets.put(getCurrentStateId(), fs);
        }
    }


    @Override
    protected void initialize(
        Artifact artifact,
        Object   context,
        CallMeta callMeta)
    {
        // do nothing
    }


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

        List<Facet> fs = facets.get(getCurrentStateId());

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

        s.getOutputs().add(o);

        return s;
    }


    /**
     * Get a list containing the one and only State.
     * @param  context ignored.
     * @return list with one and only state.
     */
    @Override
    protected List<State> getStates(Object context) {
        ArrayList<State> states = new ArrayList<State>();
        states.add(getCurrentState(context));

        return states;
    }


    public static class ExternalWMSState extends WMSBackgroundState {

        protected ExternalWMSArtifact artifact;

        protected String ids;


        public ExternalWMSState(ExternalWMSArtifact artifact) {
            super();
            this.artifact = artifact;
        }

        protected String getIds() {
            if (ids == null || ids.length() == 0) {
                ids = artifact.getDataAsString("ids");
            }

            return ids;
        }

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

        @Override
        protected String getSrid() {
            return "";
        }

        @Override
        protected String getUrl() {
            String   ids   = getIds();
            String[] parts = ids.split(";");

            return parts[0];
        }

        @Override
        protected String getLayer() {
            String   ids   = getIds();
            String[] parts = ids.split(";");

            return parts[1];
        }

        @Override
        protected String getTitle(CallMeta meta) {
            String   ids   = getIds();
            String[] parts = ids.split(";");

            return parts[2];
        }
    } // end of class ExternalWMSState
}
// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

http://dive4elements.wald.intevation.org