view flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/GaugeDischargeCurveFacet.java @ 4655:cd44d28d0fbc

Move the access to artifact data to the Access object Use BedHeightAccess class to receive the data from the artifact. This abstracts the data access from the actual artifact.
author Björn Ricks <bjoern.ricks@intevation.de>
date Tue, 11 Dec 2012 09:44:04 +0100
parents 9745f37c0d52
children dbe9b7d6b80b
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package de.intevation.flys.artifacts.model;

import java.util.Arrays;
import java.util.Map;

import de.intevation.artifacts.Artifact;
import de.intevation.artifacts.CallContext;

import de.intevation.artifactdatabase.state.DefaultFacet;
import de.intevation.artifactdatabase.state.Facet;

import de.intevation.flys.artifacts.FLYSArtifact;

import de.intevation.flys.model.Gauge;

import de.intevation.flys.utils.FLYSUtils;

import org.apache.log4j.Logger;

/**
 * A Facet that returns discharge curve data at a gauge
 *
 * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a>
 */
public class GaugeDischargeCurveFacet
extends      DefaultFacet
implements FacetTypes
{
    private static final Logger log =
        Logger.getLogger(GaugeDischargeCurveFacet.class);

    public GaugeDischargeCurveFacet(String name, String description) {
        super(0, name, description);
    }

    @Override
    public Object getData(Artifact art, CallContext context) {
        return getWQKms(art, context);
    }

    protected WQKms getWQKms(Artifact art, CallContext context) {
        if (!(art instanceof FLYSArtifact)) {
            log.warn("Invalid artifact type");
            return null;
        }

        FLYSArtifact flys = (FLYSArtifact)art;

        String river = flys.getDataAsString("river");

        Gauge gauge = FLYSUtils.getReferenceGauge(flys);

        if (river == null || gauge == null) {
            log.warn("Unknown river or gauge");
            return null;
        }

        String name = gauge.getName();

        DischargeTables dt = new DischargeTables(river, name);

        Map<String, double [][]> map = dt.getValues(
                DischargeTables.HISTORICAL_SCALE);

        double [][] values = map.get(name);
        if (values == null) {
            return null;
        }
        double [] kms = new double[values[0].length];
        Arrays.fill(kms, gauge.getStation().doubleValue());
        return new WQKms(kms, values[0], values[1], name);
    }

    @Override
    public Facet deepCopy() {
        GaugeDischargeCurveFacet copy = new GaugeDischargeCurveFacet(
                this.name,
                this.description);
        copy.set(this);
        return copy;
    }
}

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