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Data structures and related utilities used in LensKit.

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/*
 * LensKit, an open source recommender systems toolkit.
 * Copyright 2010-2014 LensKit Contributors.  See CONTRIBUTORS.md.
 * Work on LensKit has been funded by the National Science Foundation under
 * grants IIS 05-34939, 08-08692, 08-12148, and 10-17697.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 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, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package org.grouplens.lenskit.symbols;

/**
 * A pairing of a {@link Symbol} with a {@code double} value.
 *
 * @since 2.0
 * @author GroupLens Research
 * @deprecated Symbols are going away in LensKit 3.0.
 */
@Deprecated
public class DoubleSymbolValue extends SymbolValue {
    private final TypedSymbol symbol;
    private final double value;

    DoubleSymbolValue(TypedSymbol sym, double val) {
        symbol = sym;
        value = val;
    }

    @Override
    public TypedSymbol getSymbol() {
        return symbol;
    }

    @Override
    public Double getValue() {
        return getDoubleValue();
    }

    public double getDoubleValue() {
        return value;
    }
}