com.peterphi.std.types

Class Either<L,R>

java.lang.Object

com.peterphi.std.types.Either<L,R>

Type Parameters:

L - the left type

R - the right type

public class Either<L,R>
extends Object

An immutable type which represents exactly one non-null value of either left or right

Field Summary

Fields

Modifier and Type	Field and Description
protected L	left
protected R	right

Constructor Summary

Constructors

Constructor and Description
Either(L left, R right)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
L	getLeft()
R	getRight()
int	hashCode()
boolean	isLeft()
boolean	isRight()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

left

protected final L left

right

protected final R right

Constructor Detail

Either

public Either(L left,
              R right)

Parameters:

left - optional; if specified then right must be null

right - optional; if specified then left must be null

Throws:

IllegalArgumentException - if both are null or both are non-null

Method Detail

getLeft

public L getLeft()

isLeft

public boolean isLeft()

isRight

public boolean isRight()

getRight

public R getRight()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object