Package 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	Description
OptionalLong	__()	Deprecated. to be removed in future version.
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)
static u.OptionalLong	from(OptionalLong op)
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.
long	orElseThrow(String errorMessage)	Or else throw.
long	orElseThrow(String errorMessage, Object param)	Or else throw.
long	orElseThrow(String errorMessage, Object... params)	Or else throw.
long	orElseThrow(String errorMessage, Object param1, Object param2)	Or else throw.
long	orElseThrow(String errorMessage, Object param1, Object param2, Object param3)	Or else throw.
<X extends Throwable> long	orElseThrow(Supplier<? extends X> exceptionSupplier)	Or else throw.
long	orElseZero()
LongStream	stream()
ImmutableList<Long>	toImmutableList()	To immutable list.
ImmutableSet<Long>	toImmutableSet()	To immutable set.
OptionalLong	toJdkOptional()
List<Long>	toList()
Set<Long>	toSet()
String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Details

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:

from

public static u.OptionalLong from(OptionalLong op)

Parameters:

op -

Returns:

get

public long get()
         throws NoSuchElementException

Returns:

Throws:

NoSuchElementException - the no such element exception

isPresent

public boolean isPresent()

Returns:

isEmpty

public boolean isEmpty()

Returns:

ifPresent

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

Type Parameters:

E -

Parameters:

action -

Returns:

Throws:

E - the e

ifPresentOrElse

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

If present or else.

Type Parameters:

E -

E2 -

Parameters:

action -

emptyAction -

Returns:

Throws:

E - the e

E2 - the e2

filter

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

Type Parameters:

E -

Parameters:

predicate -

Returns:

Throws:

E - the e

map

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

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

mapToInt

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

Map to int.

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

mapToDouble

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

Map to double.

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

mapToObj

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

Map to obj.

Type Parameters:

T -

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

mapToNonNull

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

Type Parameters:

T -

E -

Parameters:

mapper -

Returns:

Throws:

E

flatMap

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

Type Parameters:

E -

Parameters:

mapper -

Returns:

Throws:

E - the e

or

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

Type Parameters:

E -

Parameters:

supplier -

Returns:

Throws:

E - the e

orElseZero

public long orElseZero()

Returns:

orElse

public long orElse(long other)

Parameters:

other -

Returns:

orElseGet

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

Or else get.

Type Parameters:

E -

Parameters:

other -

Returns:

Throws:

E - the e

orElseThrow

public long orElseThrow()
                 throws NoSuchElementException

Or else throw.

Returns:

Throws:

NoSuchElementException - the no such element exception

orElseThrow

@Beta
public long orElseThrow(String errorMessage)
                 throws NoSuchElementException

Or else throw.

Parameters:

errorMessage -

Returns:

Throws:

NoSuchElementException - the no such element exception

orElseThrow

@Beta
public long orElseThrow(String errorMessage,
 Object param)
                 throws NoSuchElementException

Or else throw.

Parameters:

errorMessage -

param -

Returns:

Throws:

NoSuchElementException - the no such element exception

orElseThrow

@Beta
public long orElseThrow(String errorMessage,
 Object param1,
 Object param2)
                 throws NoSuchElementException

Or else throw.

Parameters:

errorMessage -

param1 -

param2 -

Returns:

Throws:

NoSuchElementException - the no such element exception

orElseThrow

@Beta
public long orElseThrow(String errorMessage,
 Object param1,
 Object param2,
 Object param3)
                 throws NoSuchElementException

Or else throw.

Parameters:

errorMessage -

param1 -

param2 -

param3 -

Returns:

Throws:

NoSuchElementException - the no such element exception

orElseThrow

@Beta
public long orElseThrow(String errorMessage,
 Object... params)
                 throws NoSuchElementException

Or else throw.

Parameters:

errorMessage -

params -

Returns:

Throws:

NoSuchElementException - the no such element exception

orElseThrow

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

Or else throw.

Type Parameters:

X -

Parameters:

exceptionSupplier -

Returns:

Throws:

X - the x

stream

public LongStream stream()

Returns:

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:

toJdkOptional

public OptionalLong toJdkOptional()

Returns:

__

@Deprecated
public OptionalLong __()

Deprecated.

to be removed in future version.

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: