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/**
* Copyright (C) 2019 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;
/**
* A unit that other units are defined by.
*
* @author Adrien Hopkins
* @since 2019-10-16
*/
public final class BaseUnit extends Unit {
/**
* Gets a base unit from the dimension it measures, its name and its symbol.
*
* @param dimension
* dimension measured by this unit
* @param name
* name of unit
* @param symbol
* symbol of unit
* @return base unit
* @since 2019-10-16
*/
public static BaseUnit valueOf(final BaseDimension dimension, final String name, final String symbol) {
return new BaseUnit(dimension, name, symbol);
}
private final BaseDimension dimension;
private final String name;
private final String symbol;
/**
* Creates the {@code BaseUnit}.
*
* @param dimension
* dimension of unit
* @param name
* name of unit
* @param symbol
* symbol of unit
* @throws NullPointerException
* if any argument is null
* @since 2019-10-16
*/
private BaseUnit(final BaseDimension dimension, final String name, final String symbol) {
super();
this.dimension = Objects.requireNonNull(dimension, "dimension must not be null.");
this.name = Objects.requireNonNull(name, "name must not be null.");
this.symbol = Objects.requireNonNull(symbol, "symbol must not be null.");
}
/**
* Returns a {@code LinearUnit} with this unit as a base and a conversion factor of 1. This operation must be done
* in order to allow units to be created with operations.
*
* @return this unit as a {@code LinearUnit}
* @since 2019-10-16
*/
public LinearUnit asLinearUnit() {
return LinearUnit.valueOf(this.getBase(), 1);
}
@Override
public double convertFromBase(final double value) {
return value;
}
@Override
public double convertToBase(final double value) {
return value;
}
/**
* @return dimension
* @since 2019-10-16
*/
public final BaseDimension getBaseDimension() {
return this.dimension;
}
/**
* @return name
* @since 2019-10-16
*/
public final String getName() {
return this.name;
}
/**
* @return symbol
* @since 2019-10-16
*/
public final String getSymbol() {
return this.symbol;
}
@Override
public String toString() {
return String.format("%s (%s)", this.getName(), this.getSymbol());
}
}
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