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/**
* Unit-API - Units of Measurement API for Java
* Copyright (c) 2005-2015, Jean-Marie Dautelle, Werner Keil, V2COM.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of JSR-363 nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package tec.units.ri.spi;
import static tec.units.ri.AbstractUnit.ONE;
import java.util.HashMap;
import javax.measure.Quantity;
import javax.measure.Unit;
import javax.measure.quantity.*;
import tec.units.ri.AbstractSystemOfUnits;
import tec.units.ri.AbstractUnit;
import tec.units.ri.function.AddConverter;
import tec.units.ri.function.LogConverter;
import tec.units.ri.function.MultiplyConverter;
import tec.units.ri.function.PiMultiplierConverter;
import tec.units.ri.function.RationalConverter;
import tec.units.ri.quantity.QuantityDimension;
import tec.units.ri.unit.AlternateUnit;
import tec.units.ri.unit.BaseUnit;
import tec.units.ri.unit.ProductUnit;
import tec.units.ri.unit.TransformedUnit;
/**
*
This class defines all SI (Système International d'Unités) base units and
* derived units as well as units that are accepted for use with the
* SI units.
*
* @see Wikipedia: International System of Units
* @see SI 2006 - Official Specification
* @see SIPrefix
*
* @author Jean-Marie Dautelle
* @author Werner Keil
* @version 0.5.3, January 19, 2015
*/
public final class SI extends AbstractSystemOfUnits {
/**
* The singleton instance.
*/
private static final SI INSTANCE = new SI();
/**
* Holds the mapping quantity to unit.
*/
private final HashMap, AbstractUnit>
quantityToUnit = new HashMap, AbstractUnit>();
/**
* Default constructor (prevents this class from being instantiated).
*/
private SI() {
}
/**
* Returns the singleton instance of this class.
*
* @return the metric system instance.
*/
public static SI getInstance() {
return INSTANCE;
}
////////////////
// BASE UNITS //
////////////////
/**
* The SI base unit for electric current quantities (standard name A).
* The Ampere is that constant current which, if maintained in two straight
* parallel conductors of infinite length, of negligible circular
* cross-section, and placed 1 meter apart in vacuum, would produce between
* these conductors a force equal to 2 * 10-7 newton per meter of length.
* It is named after the French physicist Andre Ampere (1775-1836).
*/
public static final Unit AMPERE
= addUnit(new BaseUnit("A", QuantityDimension.ELECTRIC_CURRENT), ElectricCurrent.class);
/**
* The SI base unit for luminous intensity quantities (standard name cd).
* The candela is the luminous intensity, in a given direction,
* of a source that emits monochromatic radiation of frequency
* 540 * 1012 hertz and that has a radiant intensity in that
* direction of 1/683 watt per steradian
* @see
* Wikipedia: Candela
*/
public static final Unit CANDELA
= addUnit(new BaseUnit("cd", QuantityDimension.LUMINOUS_INTENSITY), LuminousIntensity.class);
/**
* The SI base unit for thermodynamic temperature quantities (standard name K).
* The kelvin is the 1/273.16th of the thermodynamic temperature of the
* triple point of water. It is named after the Scottish mathematician and
* physicist William Thomson 1st Lord Kelvin (1824-1907)
*/
public static final Unit KELVIN
= addUnit(new BaseUnit("K", QuantityDimension.TEMPERATURE), Temperature.class);
/**
* The SI base unit for mass quantities (standard name kg).
* It is the only SI unit with a prefix as part of its name and symbol.
* The kilogram is equal to the mass of an international prototype in the
* form of a platinum-iridium cylinder kept at Sevres in France.
* @see #GRAM
*/
public static final Unit KILOGRAM
= addUnit(new BaseUnit("kg", QuantityDimension.MASS), Mass.class);
/**
* The SI base unit for length quantities (standard name m).
* One metre was redefined in 1983 as the distance traveled by light in
* a vacuum in 1/299,792,458 of a second.
*/
public static final Unit METRE
= addUnit(new BaseUnit("m", QuantityDimension.LENGTH), Length.class);
/**
* The SI base unit for amount of substance quantities (standard name mol).
* The mole is the amount of substance of a system which contains as many
* elementary entities as there are atoms in 0.012 kilogram of carbon 12.
*/
public static final Unit MOLE
= addUnit(new BaseUnit("mol", QuantityDimension.AMOUNT_OF_SUBSTANCE), AmountOfSubstance.class);
/**
* The SI base unit for duration quantities (standard name s).
* It is defined as the duration of 9,192,631,770 cycles of radiation
* corresponding to the transition between two hyperfine levels of
* the ground state of cesium (1967 Standard).
*/
public static final Unit
