com.landawn.abacus.util

Class u.OptionalLong

java.lang.Object

com.landawn.abacus.util.u.OptionalLong

All Implemented Interfaces:

Immutable, Comparable<u.OptionalLong>

Enclosing class:

u

@Immutable
public static final class u.OptionalLong
extends Object
implements Comparable<u.OptionalLong>, Immutable

The Class OptionalLong.

Method Summary

Modifier and Type	Method and Description
u.Optional<Long>	boxed()
int	compareTo(u.OptionalLong optional)
static u.OptionalLong	empty()
boolean	equals(Object obj)
<E extends Exception> u.OptionalLong	filter(Throwables.LongPredicate<E> predicate)
<E extends Exception> u.OptionalLong	flatMap(Throwables.LongFunction<u.OptionalLong,E> mapper)
long	get()
int	hashCode()
<E extends Exception> u.OptionalLong	ifPresent(Throwables.LongConsumer<E> action)
<E extends Exception,E2 extends Exception> u.OptionalLong	ifPresentOrElse(Throwables.LongConsumer<E> action, Throwables.Runnable<E2> emptyAction) If present or else.
boolean	isEmpty()
boolean	isPresent()
<E extends Exception> u.OptionalLong	map(Throwables.LongUnaryOperator<E> mapper)
<E extends Exception> u.OptionalDouble	mapToDouble(Throwables.ToDoubleFunction<Long,E> mapper) Map to double.
<E extends Exception> u.OptionalInt	mapToInt(Throwables.ToIntFunction<Long,E> mapper) Map to int.
<T,E extends Exception> u.Optional<T>	mapToNonNull(Throwables.LongFunction<T,E> mapper)
<T,E extends Exception> u.Nullable<T>	mapToObj(Throwables.LongFunction<T,E> mapper) Map to obj.
static u.OptionalLong	of(long value)
static u.OptionalLong	ofNullable(Long val)
<E extends Exception> u.OptionalLong	or(Throwables.Supplier<u.OptionalLong,E> supplier)
long	orElse(long other)
<E extends Exception> long	orElseGet(Throwables.LongSupplier<E> other) Or else get.
long	orElseThrow() Or else throw.
<X extends Throwable> long	orElseThrow(Supplier<? extends X> exceptionSupplier) Or else throw.
long	orZero()
ImmutableList<Long>	toImmutableList() To immutable list.
ImmutableSet<Long>	toImmutableSet() To immutable set.
List<Long>	toList()
Set<Long>	toSet()
String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Detail

empty

public static u.OptionalLong empty()

Returns:

of

public static u.OptionalLong of(long value)

Parameters:

value -

Returns:

ofNullable

public static u.OptionalLong ofNullable(Long val)

Parameters:

val -

Returns:

get

public long get()
         throws NoSuchElementException

Returns:

Throws:

NoSuchElementException - the no such element exception

isPresent

public boolean isPresent()

isEmpty

public boolean isEmpty()

ifPresent

public <E extends Exception> u.OptionalLong ifPresent(Throwables.LongConsumer<E> action)
                                               throws E extends Exception

Type Parameters:

E -

Parameters:

action -

Returns:

Throws:

E - the e

E extends Exception

ifPresentOrElse

public <E extends Exception,E2 extends Exception> u.OptionalLong ifPresentOrElse(Throwables.LongConsumer<E> action,
                                                                                 Throwables.Runnable<E2> emptyAction)
                                                                          throws E extends Exception,
                                                                                 E2 extends Exception

If present or else.

Type Parameters:

E -

E2 -

Parameters:

action -

emptyAction -

Returns:

Throws:

E - the e

E2 - the e2

E extends Exception

filter

public <E extends Exception> u.OptionalLong filter(Throwables.LongPredicate<E> predicate)
                                            throws E extends Exception

Type Parameters:

E -

Parameters:

predicate -

Returns:

Throws:

E - the e

E extends Exception

map

public <E extends Exception> u.OptionalLong map(Throwables.LongUnaryOperator<E> mapper)
                                         throws E extends Exception

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

E extends Exception

mapToInt

public <E extends Exception> u.OptionalInt mapToInt(Throwables.ToIntFunction<Long,E> mapper)
                                             throws E extends Exception

Map to int.

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

E extends Exception

mapToDouble

public <E extends Exception> u.OptionalDouble mapToDouble(Throwables.ToDoubleFunction<Long,E> mapper)
                                                   throws E extends Exception

Map to double.

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

E extends Exception

mapToObj

public <T,E extends Exception> u.Nullable<T> mapToObj(Throwables.LongFunction<T,E> mapper)
                                               throws E extends Exception

Map to obj.

Type Parameters:

T -

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

E extends Exception

mapToNonNull

public <T,E extends Exception> u.Optional<T> mapToNonNull(Throwables.LongFunction<T,E> mapper)
                                                   throws E extends Exception

Throws:

E extends Exception

flatMap

public <E extends Exception> u.OptionalLong flatMap(Throwables.LongFunction<u.OptionalLong,E> mapper)
                                             throws E extends Exception

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

E extends Exception

or

public <E extends Exception> u.OptionalLong or(Throwables.Supplier<u.OptionalLong,E> supplier)
                                        throws E extends Exception

Type Parameters:

E -

Parameters:

supplier -

Returns:

Throws:

E - the e

E extends Exception

orZero

public long orZero()

Returns:

orElseThrow

public long orElseThrow()
                 throws NoSuchElementException

Or else throw.

Returns:

Throws:

NoSuchElementException - the no such element exception

orElse

public long orElse(long other)

Parameters:

other -

Returns:

orElseGet

public <E extends Exception> long orElseGet(Throwables.LongSupplier<E> other)
                                     throws E extends Exception

Or else get.

Type Parameters:

E -

Parameters:

other -

Returns:

Throws:

E - the e

E extends Exception

orElseThrow

public <X extends Throwable> long orElseThrow(Supplier<? extends X> exceptionSupplier)
                                       throws X extends Throwable

Or else throw.

Type Parameters:

X -

Parameters:

exceptionSupplier -

Returns:

Throws:

X - the x

X extends Throwable

toList

public List<Long> toList()

Returns:

toSet

public Set<Long> toSet()

Returns:

toImmutableList

public ImmutableList<Long> toImmutableList()

To immutable list.

Returns:

toImmutableSet

public ImmutableSet<Long> toImmutableSet()

To immutable set.

Returns:

boxed

public u.Optional<Long> boxed()

Returns:

compareTo

public int compareTo(u.OptionalLong optional)

Specified by:

compareTo in interface Comparable<u.OptionalLong>

Parameters:

optional -

Returns:

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

Parameters:

obj -

Returns:

hashCode

public int hashCode()

Overrides:

hashCode in class Object

Returns:

toString

public String toString()

Overrides:

toString in class Object

Returns: