io.github.acdcjunior.java6fp

Class FPOption<T>

java.lang.Object

io.github.acdcjunior.java6fp.FPOption<T>

All Implemented Interfaces:

java.lang.Iterable<T>

Direct Known Subclasses:

FPOption.None, FPOption.Some

public abstract class FPOption<T>
extends java.lang.Object
implements java.lang.Iterable<T>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FPOption.None<T>
static class	FPOption.Some<T>

Constructor Summary

Constructors

Constructor and Description
FPOption()

Method Summary

Modifier and Type	Method and Description
abstract FPOption<T>	filter(FPFunction<? super T,java.lang.Boolean> fn)
abstract <R> FPOption<R>	flatMap(FPFunction<? super T,FPOption<R>> fn)
abstract void	forEach(FPConsumer<? super T> fn)
abstract T	get() Throws an exception if the value is none().
abstract T	getOrElse(FPSupplier<? extends T> orElseFn)
abstract T	getOrElse(T orElse)
abstract FPOption<T>	ifDefined(FPConsumer<? super T> fn)
abstract FPOption<T>	ifEmpty(FPCommand fn)
boolean	isDefined()
abstract boolean	isEmpty()
java.util.Iterator<T>	iterator()
abstract <R> FPOption<R>	map(FPFunction<? super T,R> fn)
static <R> FPOption<R>	none()
static <R> FPOption<R>	ofNullable(R value)
abstract FPOption<T>	orElse(FPSupplier<? extends T> orElseFn)
abstract FPOption<T>	orElse(T orElse)
abstract FPOption<T>	orElseFlat(FPOption<T> orElse)
abstract FPOption<T>	orElseFlat(FPSupplier<FPOption<T>> orElseFn)
abstract T	orNull() Returns null if the value is none().
static <R> FPOption<R>	some(R value)
abstract java.util.List<T>	toList()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

FPOption

public FPOption()

Method Detail

toList

@NotNull
public abstract java.util.List<T> toList()

orNull

@Nullable
public abstract T orNull()

Returns null if the value is none().

getOrElse

@NotNull
public abstract T getOrElse(@NotNull
                                      T orElse)

getOrElse

@NotNull
public abstract T getOrElse(@NotNull
                                      FPSupplier<? extends T> orElseFn)

get

@NotNull
public abstract T get()

Throws an exception if the value is none().

isEmpty

public abstract boolean isEmpty()

isDefined

public boolean isDefined()

ifEmpty

@NotNull
public abstract FPOption<T> ifEmpty(@NotNull
                                              FPCommand fn)

ifDefined

@NotNull
public abstract FPOption<T> ifDefined(@NotNull
                                                FPConsumer<? super T> fn)

orElse

@NotNull
public abstract FPOption<T> orElse(@NotNull
                                             T orElse)

orElse

@NotNull
public abstract FPOption<T> orElse(@NotNull
                                             FPSupplier<? extends T> orElseFn)

orElseFlat

@NotNull
public abstract FPOption<T> orElseFlat(@NotNull
                                                 FPOption<T> orElse)

orElseFlat

@NotNull
public abstract FPOption<T> orElseFlat(@NotNull
                                                 FPSupplier<FPOption<T>> orElseFn)

filter

@NotNull
public abstract FPOption<T> filter(@NotNull
                                             FPFunction<? super T,java.lang.Boolean> fn)

map

@NotNull
public abstract <R> FPOption<R> map(@NotNull
                                              FPFunction<? super T,R> fn)

flatMap

@NotNull
public abstract <R> FPOption<R> flatMap(@NotNull
                                                  FPFunction<? super T,FPOption<R>> fn)

forEach

public abstract void forEach(@NotNull
                             FPConsumer<? super T> fn)

iterator

@NotNull
public java.util.Iterator<T> iterator()

Specified by:

iterator in interface java.lang.Iterable<T>

some

@NotNull
public static <R> FPOption<R> some(@NotNull
                                             R value)

none

@NotNull
public static <R> FPOption<R> none()

ofNullable

@NotNull
public static <R> FPOption<R> ofNullable(@Nullable
                                                   R value)