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/*
 * Units of Measurement Reference Implementation
 * 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.unit;

import javax.measure.Quantity;
import javax.measure.Unit;
import javax.measure.quantity.Acceleration;
import javax.measure.quantity.AmountOfSubstance;
import javax.measure.quantity.Angle;
import javax.measure.quantity.Area;
import javax.measure.quantity.CatalyticActivity;
import javax.measure.quantity.Dimensionless;
import javax.measure.quantity.ElectricCapacitance;
import javax.measure.quantity.ElectricCharge;
import javax.measure.quantity.ElectricConductance;
import javax.measure.quantity.ElectricCurrent;
import javax.measure.quantity.ElectricInductance;
import javax.measure.quantity.ElectricPotential;
import javax.measure.quantity.ElectricResistance;
import javax.measure.quantity.Energy;
import javax.measure.quantity.Force;
import javax.measure.quantity.Frequency;
import javax.measure.quantity.Illuminance;
import javax.measure.quantity.Length;
import javax.measure.quantity.LuminousFlux;
import javax.measure.quantity.LuminousIntensity;
import javax.measure.quantity.MagneticFlux;
import javax.measure.quantity.MagneticFluxDensity;
import javax.measure.quantity.Mass;
import javax.measure.quantity.Power;
import javax.measure.quantity.Pressure;
import javax.measure.quantity.RadiationDoseAbsorbed;
import javax.measure.quantity.RadiationDoseEffective;
import javax.measure.quantity.Radioactivity;
import javax.measure.quantity.SolidAngle;
import javax.measure.quantity.Speed;
import javax.measure.quantity.Temperature;
import javax.measure.quantity.Time;
import javax.measure.quantity.Volume;
import javax.measure.spi.SystemOfUnits;

import tec.units.ri.AbstractSystemOfUnits;
import tec.units.ri.AbstractUnit;
import tec.units.ri.format.SimpleUnitFormat;
import tec.units.ri.function.AddConverter;
import tec.units.ri.function.Nameable;
import tec.units.ri.function.RationalConverter;
import tec.units.ri.quantity.QuantityDimension;

/**
 * 

This class defines commonly used units. * * @author Werner Keil * @version 0.7, November 9, 2015 */ public class Units extends AbstractSystemOfUnits implements Nameable { public static final String SYSTEM_NAME = "Units"; // This is for ME compatibility, since Class.getSimpleName() isn't available. protected Units() { } private static final Units INSTANCE = new Units(); /** * Holds the dimensionless unit ONE. * @deprecated consider moving it to {@link AbstractUnit} again for static constant usage reasons. */ public static final Unit ONE = addUnit( new ProductUnit(), Dimensionless.class); //////////////// // 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