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Unit Standard (JSR 363) Reference Implementation.
/*
* 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.quantity;
import static tec.units.ri.unit.Units.*;
import java.util.HashMap;
import java.util.Map;
import javax.measure.Quantity;
import javax.measure.Unit;
import javax.measure.quantity.*;
import javax.measure.spi.QuantityFactory;
import tec.units.ri.AbstractQuantity;
/**
* The default factory implementation. This factory provides a default
* implementation for every {@link AbstractQuantity} sub-type.
*
* For example:
*
* Quantity m = DefaultQuantityFactory.getInstance(Mass.class).create(23.0, KILOGRAM); // 23.0 kg
* Quantity
*
* @param
* The type of the quantity.
*
* @author Martin
* Desruisseaux
* @author Werner Keil
* @author Jean-Marie Dautelle
* @version 0.7, $Date: 2015-09-27 $
*/
public final class DefaultQuantityFactory> extends
AbstractQuantityFactory {
/**
* The type of the quantities created by this factory.
*/
@SuppressWarnings("unused")
private final Class type;
/**
* The metric unit for quantities created by this factory.
*/
private final Unit metricUnit;
/**
* Creates a new factory for quantities of the given type.
*
* @param type
* The type of the quantities created by this factory.
*/
@SuppressWarnings("unchecked")
DefaultQuantityFactory(final Class type) {
this.type = type;
metricUnit = CLASS_TO_METRIC_UNIT.get(type);
}
@SuppressWarnings("rawtypes")
static final Map CLASS_TO_METRIC_UNIT = new HashMap();
static {
CLASS_TO_METRIC_UNIT.put(Dimensionless.class, ONE);
CLASS_TO_METRIC_UNIT.put(ElectricCurrent.class, AMPERE);
CLASS_TO_METRIC_UNIT.put(LuminousIntensity.class, CANDELA);
CLASS_TO_METRIC_UNIT.put(Temperature.class, KELVIN);
CLASS_TO_METRIC_UNIT.put(Mass.class, KILOGRAM);
CLASS_TO_METRIC_UNIT.put(Length.class, METRE);
CLASS_TO_METRIC_UNIT.put(AmountOfSubstance.class, MOLE);
CLASS_TO_METRIC_UNIT.put(Time.class, SECOND);
CLASS_TO_METRIC_UNIT.put(Angle.class, RADIAN);
CLASS_TO_METRIC_UNIT.put(SolidAngle.class, STERADIAN);
CLASS_TO_METRIC_UNIT.put(Frequency.class, HERTZ);
CLASS_TO_METRIC_UNIT.put(Force.class, NEWTON);
CLASS_TO_METRIC_UNIT.put(Pressure.class, PASCAL);
CLASS_TO_METRIC_UNIT.put(Energy.class, JOULE);
CLASS_TO_METRIC_UNIT.put(Power.class, WATT);
CLASS_TO_METRIC_UNIT.put(ElectricCharge.class, COULOMB);
CLASS_TO_METRIC_UNIT.put(ElectricPotential.class, VOLT);
CLASS_TO_METRIC_UNIT.put(ElectricCapacitance.class, FARAD);
CLASS_TO_METRIC_UNIT.put(ElectricResistance.class, OHM);
CLASS_TO_METRIC_UNIT.put(ElectricConductance.class, SIEMENS);
CLASS_TO_METRIC_UNIT.put(MagneticFlux.class, WEBER);
CLASS_TO_METRIC_UNIT.put(MagneticFluxDensity.class, TESLA);
CLASS_TO_METRIC_UNIT.put(ElectricInductance.class, HENRY);
CLASS_TO_METRIC_UNIT.put(LuminousFlux.class, LUMEN);
CLASS_TO_METRIC_UNIT.put(Illuminance.class, LUX);
CLASS_TO_METRIC_UNIT.put(Radioactivity.class, BECQUEREL);
CLASS_TO_METRIC_UNIT.put(RadiationDoseAbsorbed.class, GRAY);
CLASS_TO_METRIC_UNIT.put(RadiationDoseEffective.class, SIEVERT);
CLASS_TO_METRIC_UNIT.put(CatalyticActivity.class, KATAL);
CLASS_TO_METRIC_UNIT.put(Speed.class, METRES_PER_SECOND);
CLASS_TO_METRIC_UNIT.put(Acceleration.class, METRES_PER_SQUARE_SECOND);
CLASS_TO_METRIC_UNIT.put(Area.class, SQUARE_METRE);
CLASS_TO_METRIC_UNIT.put(Volume.class, CUBIC_METRE);
}
@SuppressWarnings("unchecked")
public Quantity create(Number value, Unit unit) {
// public > Q create(N value, U
// unit) {
return (Q) new NumberQuantity(value, unit);
}
public Unit getSystemUnit() {
return metricUnit;
}
/**
* Returns the default instance for the specified quantity type.
*
* @param The type of the quantity
* @param type the quantity type
* @return the quantity factory for the specified type
*/
@SuppressWarnings("unchecked")
public static > QuantityFactory getInstance(final Class type) {
logger.log(LOG_LEVEL, "Type: " + type + ": " + type.isInterface());
QuantityFactory factory;
if (!type.isInterface()) {
factory = new DefaultQuantityFactory(type);
// TODO use instances?
} else {
factory = INSTANCES.get(type);
if (factory != null) return factory;
if (!Quantity.class.isAssignableFrom(type))
// This exception is not documented because it should never happen if the
// user don't try to trick the Java generic types system with unsafe cast.
throw new ClassCastException();
factory = new DefaultQuantityFactory(type);
INSTANCES.put(type, factory);
}
return factory;
}
}