Package org.geotools.metadata.iso.identification

Class RepresentativeFractionImpl

Object

Number

RepresentativeFractionImpl

All Implemented Interfaces:

Serializable, RepresentativeFraction

public class RepresentativeFractionImpl
extends Number
implements RepresentativeFraction

A scale where denominator = 1 / scale. This implementation is set up as a number - because it is.

Since:

2.4

Author:

Jody Garnett

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
RepresentativeFractionImpl()	Default empty constructor.
RepresentativeFractionImpl(long denominator)	Creates a new representative fraction from the specified denominator.

Method Summary

Modifier and Type	Method	Description
double	doubleValue()	Returns the scale in a form usable for computation.
boolean	equals(Object object)	Compares this object with the specified value for equality.
float	floatValue()	Returns the scale as a float type.
static RepresentativeFraction	fromScale(double scale)	Creates a representative fraction from a scale as a double value.
long	getDenominator()	Returns the number below the line in a vulgar fraction.
int	hashCode()	Returns a hash value for this representative fraction.
int	intValue()	Returns the scale as an integer.
long	longValue()	Returns the scale as an integer.
void	setDenominator(long denominator)	Sets the denominator value.

Methods inherited from class Number

byteValue, shortValue

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RepresentativeFractionImpl

public RepresentativeFractionImpl()

Default empty constructor.

RepresentativeFractionImpl

public RepresentativeFractionImpl(long denominator)

Creates a new representative fraction from the specified denominator.

Parameters:

denominator - The denominator.

Method Detail

fromScale

public static RepresentativeFraction fromScale(double scale)
                                        throws IllegalArgumentException

Creates a representative fraction from a scale as a double value. The denominator will be set to 1/scale.

Parameters:

scale - The scale as a number between 0 and 1.

Returns:

The representative fraction created from the given scale.

Throws:

IllegalArgumentException - if the condition abs(scale) <= 1 is not meet.

doubleValue

public double doubleValue()

Returns the scale in a form usable for computation.

Specified by:

doubleValue in interface RepresentativeFraction

Specified by:

doubleValue in class Number

Returns:

1.0 / denominator

floatValue

public float floatValue()

Returns the scale as a float type.

Specified by:

floatValue in class Number

longValue

public long longValue()
               throws ArithmeticException

Returns the scale as an integer. This method returns 0, 1 or throws an exception as specified in intValue().

Specified by:

longValue in class Number

Throws:

ArithmeticException - if the denominator is 0.

intValue

public int intValue()
             throws ArithmeticException

Returns the scale as an integer. If the denominator is 0, then this method throws an ArithmeticException since infinities can not be represented by an integer. Otherwise if the denominator is 1, then this method returns 1. Otherwise returns 0 0 since the scale is a fraction between 0 and 1, and such value can not be represented as an integer.

Specified by:

intValue in class Number

Throws:

ArithmeticException - if the denominator is 0.

getDenominator

public long getDenominator()

Returns the number below the line in a vulgar fraction.

Specified by:

getDenominator in interface RepresentativeFraction

Returns:

The denominator.

setDenominator

public void setDenominator(long denominator)

Sets the denominator value.

Parameters:

denominator - The new denominator value.

equals

public boolean equals(Object object)

Compares this object with the specified value for equality.

Specified by:

equals in interface RepresentativeFraction

Overrides:

equals in class Object

Parameters:

object - The object to compare with.

Returns:

true if both objects are equal.

hashCode

public int hashCode()

Returns a hash value for this representative fraction.

Specified by:

hashCode in interface RepresentativeFraction

Overrides:

hashCode in class Object

Returns:

A hash code value for this representative fraction.