MoneyPerVolumeUnit.java
package org.djunits.unit;
import org.djunits.unit.unitsystem.UnitSystem;
/**
* MoneyPerVolumeUnit defines a unit for the cost or benefit per volume, e.g. the cost of a gallon of fuel.
* <p>
* Copyright (c) 2015-2019 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
* BSD-style license. See <a href="http://djunits.org/docs/license.html">DJUNITS License</a>.
* <p>
* $LastChangedDate: 2019-03-02 19:06:46 +0100 (Sat, 02 Mar 2019) $, @version $Revision: 342 $, by $Author: averbraeck $,
* initial version Sep 5, 2015 <br>
* @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
*/
public class MoneyPerVolumeUnit extends LinearUnit<MoneyPerVolumeUnit>
{
/** */
private static final long serialVersionUID = 20150905L;
/** The unit of money for the money per volume unit, e.g., EUR. */
private final MoneyUnit moneyUnit;
/** The unit of volume for the money per volume unit, e.g., liter. */
private final VolumeUnit volumeUnit;
/** Euro per cubic meter. */
public static final MoneyPerVolumeUnit EUR_PER_CUBIC_METER;
/** Euro per liter. */
public static final MoneyPerVolumeUnit EUR_PER_LITER;
/** US$ per gallon (US). */
public static final MoneyPerVolumeUnit USD_PER_GALLON_US_FLUID;
/** US$ per ounce (US). */
public static final MoneyPerVolumeUnit USD_PER_OUNCE_US_FLUID;
/** The standard unit to use. */
private static MoneyPerVolumeUnit standardMoneyPerVolumeUnit;
static
{
EUR_PER_CUBIC_METER =
new MoneyPerVolumeUnit(MoneyUnit.EUR, VolumeUnit.CUBIC_METER, "EUR per cubic meter", "\u20AC/m^3");
EUR_PER_LITER = new MoneyPerVolumeUnit(MoneyUnit.EUR, VolumeUnit.LITER, "EUR per liter", "\u20AC/l");
USD_PER_GALLON_US_FLUID =
new MoneyPerVolumeUnit(MoneyUnit.USD, VolumeUnit.GALLON_US_FLUID, "USD per gallon (US)", "US$/gallon");
USD_PER_OUNCE_US_FLUID =
new MoneyPerVolumeUnit(MoneyUnit.USD, VolumeUnit.OUNCE_US_FLUID, "USD per ounce (US)", "US$/ounce");
standardMoneyPerVolumeUnit = EUR_PER_CUBIC_METER;
}
/**
* Build a money per volume unit from a money unit and an volume unit.
* @param moneyUnit MoneyUnit; the unit of money for the money per volume unit, e.g., EUR
* @param volumeUnit VolumeUnit; the unit of volume for the money per volume unit, e.g., m^3
* @param abbreviationKey String; the key to the locale file for the abbreviation of the unit
*/
private MoneyPerVolumeUnit(final MoneyUnit moneyUnit, final VolumeUnit volumeUnit, final String abbreviationKey)
{
super(abbreviationKey, UnitSystem.OTHER, standardMoneyPerVolumeUnit,
moneyUnit.getScaleFactor() / volumeUnit.getScaleFactor());
this.moneyUnit = moneyUnit;
this.volumeUnit = volumeUnit;
}
/**
* Build a user-defined money per volume unit from a money unit and an volume unit.
* @param moneyUnit MoneyUnit; the unit of money for the money per volume unit, e.g., EUR
* @param volumeUnit VolumeUnit; the unit of volume for the money per volume unit, e.g., m^3
* @param name String; the key to the locale file for the long name of the unit
* @param abbreviation String; the key to the locale file for the abbreviation of the unit
*/
public MoneyPerVolumeUnit(final MoneyUnit moneyUnit, final VolumeUnit volumeUnit, final String name,
final String abbreviation)
{
super(name, abbreviation, UnitSystem.OTHER, standardMoneyPerVolumeUnit,
moneyUnit.getScaleFactor() / volumeUnit.getScaleFactor());
this.moneyUnit = moneyUnit;
this.volumeUnit = volumeUnit;
}
/**
* Build a MoneyPerVolumeUnit unit based on another MoneyPerVolumeUnit.
* @param abbreviationKey String; the key to the locale file for the abbreviation of the unit
* @param referenceUnit MoneyPerVolumeUnit; the unit to convert to
* @param scaleFactorToReferenceUnit double; multiply a value in this unit by the factor to convert to the given reference
* unit
*/
private MoneyPerVolumeUnit(final String abbreviationKey, final MoneyPerVolumeUnit referenceUnit,
final double scaleFactorToReferenceUnit)
{
super(abbreviationKey, UnitSystem.OTHER, referenceUnit, scaleFactorToReferenceUnit);
this.moneyUnit = referenceUnit.getMoneyUnit();
this.volumeUnit = referenceUnit.getVolumeUnit();
}
/**
* Build a user-defined MoneyPerVolumeUnit with a conversion factor to another MoneyPerVolumeUnit.
* @param name String; the long name of the unit
* @param abbreviation String; the abbreviation of the unit
* @param referenceUnit MoneyPerVolumeUnit; the unit to convert to
* @param scaleFactorToReferenceUnit double; multiply a value in this unit by the factor to convert to the given reference
* unit
*/
public MoneyPerVolumeUnit(final String name, final String abbreviation, final MoneyPerVolumeUnit referenceUnit,
final double scaleFactorToReferenceUnit)
{
super(name, abbreviation, UnitSystem.OTHER, referenceUnit, scaleFactorToReferenceUnit);
this.moneyUnit = referenceUnit.getMoneyUnit();
this.volumeUnit = referenceUnit.getVolumeUnit();
}
/**
* @return moneyUnit
*/
public final MoneyUnit getMoneyUnit()
{
return this.moneyUnit;
}
/**
* @return volumeUnit
*/
public final VolumeUnit getVolumeUnit()
{
return this.volumeUnit;
}
/**
* Set the standard MoneyPerVolumeUnit in case the standard MoneyUnit changes, as the standard money unit is flexible.
* @param standardMoneyUnit MoneyUnit; the new standard money unit.
*/
protected static void setStandardUnit(final MoneyUnit standardMoneyUnit)
{
try
{
standardMoneyPerVolumeUnit = new MoneyPerVolumeUnit(standardMoneyUnit, VolumeUnit.CUBIC_METER,
standardMoneyUnit.getName() + " per cubic meter", standardMoneyUnit.getAbbreviation() + "/m^3");
}
catch (Exception e)
{
// ignore a RunTimeException that indicates that the Unit might already exist
e = null;
}
}
/** {@inheritDoc} */
@Override
public final MoneyPerVolumeUnit getStandardUnit()
{
return standardMoneyPerVolumeUnit;
}
/**
* @return standard MoneyPerVolumeUnit
*/
public static MoneyPerVolumeUnit getStandardMoneyPerVolumeUnit()
{
return standardMoneyPerVolumeUnit;
}
/** {@inheritDoc} */
@Override
public final String getSICoefficientsString()
{
return "1/m3";
}
/** {@inheritDoc} */
@Override
public int hashCode()
{
final int prime = 31;
int result = super.hashCode();
result = prime * result + ((this.moneyUnit == null) ? 0 : this.moneyUnit.hashCode());
result = prime * result + ((this.volumeUnit == null) ? 0 : this.volumeUnit.hashCode());
return result;
}
/** {@inheritDoc} */
@SuppressWarnings("checkstyle:needbraces")
@Override
public boolean equals(final Object obj)
{
if (this == obj)
return true;
if (!super.equals(obj))
return false;
if (getClass() != obj.getClass())
return false;
MoneyPerVolumeUnit other = (MoneyPerVolumeUnit) obj;
if (this.moneyUnit == null)
{
if (other.moneyUnit != null)
return false;
}
else if (!this.moneyUnit.equals(other.moneyUnit))
return false;
if (this.volumeUnit == null)
{
if (other.volumeUnit != null)
return false;
}
else if (!this.volumeUnit.equals(other.volumeUnit))
return false;
return true;
}
}