MoneyPerLengthUnit.java
package org.djunits.unit;
import org.djunits.unit.unitsystem.UnitSystem;
/**
* MoneyPerLengthUnit defines a unit for the cost or benefit per length, e.g. the cost of driving a kilometer.
* <p>
* Copyright (c) 2015-2018 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: 2018-08-10 02:43:31 +0200 (Fri, 10 Aug 2018) $, @version $Revision: 286 $, by $Author: averbraeck $,
* initial version Sep 5, 2015 <br>
* @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
*/
public class MoneyPerLengthUnit extends LinearUnit<MoneyPerLengthUnit>
{
/** */
private static final long serialVersionUID = 20150905L;
/** The unit of money for the money per length unit, e.g., EUR. */
private final MoneyUnit moneyUnit;
/** The unit of length for the money per length unit, e.g., m. */
private final LengthUnit lengthUnit;
/** Euro per meter. */
public static final MoneyPerLengthUnit EUR_PER_METER;
/** Euro per kilometer. */
public static final MoneyPerLengthUnit EUR_PER_KILOMETER;
/** US$ per mile. */
public static final MoneyPerLengthUnit USD_PER_MILE;
/** US$ per foot. */
public static final MoneyPerLengthUnit USD_PER_FOOT;
/** The standard unit to use. */
private static MoneyPerLengthUnit standardMoneyPerLengthUnit;
static
{
EUR_PER_METER = new MoneyPerLengthUnit(MoneyUnit.EUR, LengthUnit.METER, "EUR per meter", "\u20AC/m", false);
EUR_PER_KILOMETER =
new MoneyPerLengthUnit(MoneyUnit.EUR, LengthUnit.KILOMETER, "EUR per kilometer", "\u20AC/km", false);
USD_PER_MILE = new MoneyPerLengthUnit(MoneyUnit.USD, LengthUnit.MILE, "USD per mile", "US$/mi", false);
USD_PER_FOOT = new MoneyPerLengthUnit(MoneyUnit.USD, LengthUnit.FOOT, "USD per foot", "US$/ft", false);
standardMoneyPerLengthUnit = EUR_PER_METER;
}
/**
* Build a money per length unit from a money unit and an length unit.
* @param moneyUnit the unit of money for the money per length unit, e.g., EUR
* @param lengthUnit the unit of length for the money per length unit, e.g., meter
* @param nameOrNameKey if standardUnit: the key to the locale file for the long name of the unit, otherwise the name itself
* @param abbreviationOrAbbreviationKey if standardUnit: the key to the locale file for the abbreviation of the unit,
* otherwise the abbreviation itself
* @param standardUnit indicates whether it is a standard unit with a definition in the locale, or a user-defined unit
*/
private MoneyPerLengthUnit(final MoneyUnit moneyUnit, final LengthUnit lengthUnit, final String nameOrNameKey,
final String abbreviationOrAbbreviationKey, final boolean standardUnit)
{
super(nameOrNameKey, abbreviationOrAbbreviationKey, UnitSystem.OTHER, standardMoneyPerLengthUnit,
moneyUnit.getScaleFactor() / lengthUnit.getScaleFactor(), standardUnit);
this.moneyUnit = moneyUnit;
this.lengthUnit = lengthUnit;
}
/**
* Build a user-defined money per length unit from a money unit and an length unit.
* @param moneyUnit the unit of money for the money per length unit, e.g., EUR
* @param lengthUnit the unit of length for the money per length unit, e.g., meter
* @param name the key to the locale file for the long name of the unit
* @param abbreviation the key to the locale file for the abbreviation of the unit
*/
public MoneyPerLengthUnit(final MoneyUnit moneyUnit, final LengthUnit lengthUnit, final String name,
final String abbreviation)
{
this(moneyUnit, lengthUnit, name, abbreviation, false);
}
/**
* Build a MoneyPerLengthUnit unit based on another MoneyPerLengthUnit.
* @param nameOrNameKey if standardUnit: the key to the locale file for the long name of the unit, otherwise the name itself
* @param abbreviationOrAbbreviationKey if standardUnit: the key to the locale file for the abbreviation of the unit,
* otherwise the abbreviation itself
* @param referenceUnit the unit to convert to
* @param scaleFactorToReferenceUnit multiply a value in this unit by the factor to convert to the given reference unit
* @param standardUnit indicates whether it is a standard unit with a definition in the locale, or a user-defined unit
*/
private MoneyPerLengthUnit(final String nameOrNameKey, final String abbreviationOrAbbreviationKey,
final MoneyPerLengthUnit referenceUnit, final double scaleFactorToReferenceUnit, final boolean standardUnit)
{
super(nameOrNameKey, abbreviationOrAbbreviationKey, UnitSystem.OTHER, referenceUnit, scaleFactorToReferenceUnit,
standardUnit);
this.moneyUnit = referenceUnit.getMoneyUnit();
this.lengthUnit = referenceUnit.getLengthUnit();
}
/**
* Build a user-defined MoneyPerLengthUnit with a conversion factor to another MoneyPerLengthUnit.
* @param name the long name of the unit
* @param abbreviation the abbreviation of the unit
* @param referenceUnit the unit to convert to
* @param scaleFactorToReferenceUnit multiply a value in this unit by the factor to convert to the given reference unit
*/
public MoneyPerLengthUnit(final String name, final String abbreviation, final MoneyPerLengthUnit referenceUnit,
final double scaleFactorToReferenceUnit)
{
this(name, abbreviation, referenceUnit, scaleFactorToReferenceUnit, false);
}
/**
* @return moneyUnit
*/
public final MoneyUnit getMoneyUnit()
{
return this.moneyUnit;
}
/**
* @return lengthUnit
*/
public final LengthUnit getLengthUnit()
{
return this.lengthUnit;
}
/**
* Set the standard MoneyPerLengthUnit in case the standard MoneyUnit changes, as the standard money unit is flexible.
* @param standardMoneyUnit the new standard money unit.
*/
protected static void setStandardUnit(final MoneyUnit standardMoneyUnit)
{
try
{
standardMoneyPerLengthUnit = new MoneyPerLengthUnit(standardMoneyUnit, LengthUnit.METER,
standardMoneyUnit.getName() + " per meter", standardMoneyUnit.getAbbreviation() + "/m");
}
catch (Exception e)
{
// ignore a RunTimeException that indicates that the Unit might already exist
e = null;
}
}
/** {@inheritDoc} */
@Override
public final MoneyPerLengthUnit getStandardUnit()
{
return standardMoneyPerLengthUnit;
}
/**
* @return standard MoneyPerLengthUnit
*/
public static MoneyPerLengthUnit getStandardMoneyPerLengthUnit()
{
return standardMoneyPerLengthUnit;
}
/** {@inheritDoc} */
@Override
public final String getSICoefficientsString()
{
return "1/m";
}
/** {@inheritDoc} */
@Override
public int hashCode()
{
final int prime = 31;
int result = super.hashCode();
result = prime * result + ((this.lengthUnit == null) ? 0 : this.lengthUnit.hashCode());
result = prime * result + ((this.moneyUnit == null) ? 0 : this.moneyUnit.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;
MoneyPerLengthUnit other = (MoneyPerLengthUnit) obj;
if (this.lengthUnit == null)
{
if (other.lengthUnit != null)
return false;
}
else if (!this.lengthUnit.equals(other.lengthUnit))
return false;
if (this.moneyUnit == null)
{
if (other.moneyUnit != null)
return false;
}
else if (!this.moneyUnit.equals(other.moneyUnit))
return false;
return true;
}
}