TimeSeriesMapper.java

/*
 * Copyright (C) 2010 Brockmann Consult GmbH (info@brockmann-consult.de)
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 3 of the License, or (at your option)
 * any later version.
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see http://www.gnu.org/licenses/
 */

package org.esa.snap.timeseries.core;

import org.esa.snap.core.datamodel.Product;
import org.esa.snap.timeseries.core.timeseries.datamodel.AbstractTimeSeries;
import org.esa.snap.timeseries.core.timeseries.datamodel.ProductLocation;

import java.util.List;
import java.util.Map;
import java.util.WeakHashMap;

/**
 * The TimeSeriesMapper is a singleton used to map between a
 * {@link Product} and an {@link AbstractTimeSeries}.
 *
 *  *<p><i>Note that this class is not yet public API. Interface may change in future releases.</i></p>
 *
 * @author Marco Peters
 * @author Thomas Storm
 */
public class TimeSeriesMapper {

    private final Map<Product, AbstractTimeSeries> map = new WeakHashMap<>();

    private TimeSeriesMapper() {
    }

    public static TimeSeriesMapper getInstance() {
        return Holder.instance;
    }

    private static class Holder {

        private static final TimeSeriesMapper instance = new TimeSeriesMapper();

        private Holder() {
        }
    }

    public void put(Product product, AbstractTimeSeries timeSeries) {
        map.put(product, timeSeries);
    }

    public void remove(Product product) {
        AbstractTimeSeries timeSeries = map.remove(product);
        if (timeSeries != null) {
            List<ProductLocation> locationList = timeSeries.getProductLocations();
            for (ProductLocation productLocation : locationList) {
                productLocation.closeProducts();
            }
            timeSeries.dispose();
        }
    }

    public AbstractTimeSeries getTimeSeries(Product product) {
        return map.get(product);
    }

}