info.novatec.testit.livingdoc.samples.application.mortgage.Ratio Maven / Gradle / Ivy

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/* Copyright (c) 2006 Pyxis Technologies inc.
 * 
 * This 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 2 of the License, or (at your option) any later
 * version.
 * 
 * This software 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 St, Fifth Floor, Boston, MA 02110-1301 USA, or see the FSF site:
 * http://www.fsf.org. */

package info.novatec.testit.livingdoc.samples.application.mortgage;

import java.math.BigDecimal;


public class Ratio {
    private BigDecimal numerator;
    private BigDecimal divisor;

    public Ratio(BigDecimal value, BigDecimal base) {
        this.numerator = value;
        this.divisor = base;
    }

    public static Ratio percent(long value) {
        return Ratio.of(value, 100);
    }

    public static Ratio of(long value, long base) {
        return new Ratio(BigDecimal.valueOf(value), BigDecimal.valueOf(base));
    }

    public BigDecimal applyTo(BigDecimal value) {
        return value.multiply(numerator).divide(divisor);
    }

    public Ratio inverse() {
        return new Ratio(divisor, numerator);
    }
}