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/**
* Copyright (C) 2018 Adrien Hopkins
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package org.unitConverter.unit;
import java.util.Objects;
import org.unitConverter.dimension.UnitDimension;
/**
* A system of units. Each unit should be aware of its system.
*
* @author Adrien Hopkins
* @since 2018-12-23
* @since v0.1.0
*/
public interface UnitSystem {
/**
* Gets a base unit for this system and the provided dimension.
*
* @param dimension
* dimension used by base unit
* @return base unit
* @throws NullPointerException
* if dimension is null
* @since 2019-01-25
* @since v0.1.0
*/
default BaseUnit getBaseUnit(final UnitDimension dimension) {
Objects.requireNonNull(dimension, "dimension must not be null.");
return new BaseUnit(dimension, this);
}
/**
* @return name of system
* @since 2018-12-23
* @since v0.1.0
*/
String getName();
}
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