jodd.util.function

Class Maybe.Just<T>

java.lang.Object

jodd.util.function.Maybe.Just<T>

All Implemented Interfaces:

java.lang.Iterable<T>, Maybe<T>

Enclosing interface:

Maybe<T>

public static class Maybe.Just<T>
extends java.lang.Object
implements Maybe<T>

Nested Class Summary

Nested classes/interfaces inherited from interface jodd.util.function.Maybe

Maybe.Just<T>

Method Summary

Modifier and Type	Method and Description
void	consumeJust(java.util.function.Consumer<T> consumer) Consumes value if present.
boolean	equals(java.lang.Object o)
Maybe<T>	filter(java.util.function.Predicate<? super T> predicate)
<U> Maybe<U>	flatMap(java.util.function.Function<? super T,Maybe<U>> mapper) Flat map.
int	hashCode()
boolean	isJust() Returns true if value is present.
boolean	isNothing() Returns false if value is not present.
java.util.Iterator<T>	iterator()
<U> Maybe<U>	map(java.util.function.Function<? super T,? extends U> mapper) Map.
<V> V	maybe(V defaultValue, java.util.function.Function<T,V> function) Takes a default value and a function.
java.util.Optional<T>	optional() Converts Maybe to the Java Optional.
Maybe<T>	or(Maybe<T> maybeDefaultValue) Use give maybe if this one is NOTHING.
Maybe<T>	or(java.util.function.Supplier<? extends Maybe<? extends T>> supplier) Use supplied value if this one is NOTHING.
Maybe<T>	or(T otherValue) Use a maybe of given value if this one is NOTHING.
java.util.stream.Stream<T>	stream() Returns empty or single-element stream.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface jodd.util.function.Maybe

just, nothing, of, of

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Detail

isJust

public boolean isJust()

Description copied from interface: Maybe

Returns true if value is present.

Specified by:

isJust in interface Maybe<T>

isNothing

public boolean isNothing()

Description copied from interface: Maybe

Returns false if value is not present.

Specified by:

isNothing in interface Maybe<T>

maybe

public <V> V maybe(V defaultValue,
                   java.util.function.Function<T,V> function)

Description copied from interface: Maybe

Takes a default value and a function. If the Maybe value is Nothing, the function returns the default value. Otherwise, it applies the function to the value inside the Just and returns the result.

Specified by:

maybe in interface Maybe<T>

consumeJust

public void consumeJust(java.util.function.Consumer<T> consumer)

Description copied from interface: Maybe

Consumes value if present.

Specified by:

consumeJust in interface Maybe<T>

iterator

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

Specified by:

iterator in interface java.lang.Iterable<T>

stream

public java.util.stream.Stream<T> stream()

Description copied from interface: Maybe

Returns empty or single-element stream.

Specified by:

stream in interface Maybe<T>

or

public Maybe<T> or(T otherValue)

Description copied from interface: Maybe

Use a maybe of given value if this one is NOTHING.

Specified by:

or in interface Maybe<T>

or

public Maybe<T> or(Maybe<T> maybeDefaultValue)

Description copied from interface: Maybe

Use give maybe if this one is NOTHING.

Specified by:

or in interface Maybe<T>

or

public Maybe<T> or(java.util.function.Supplier<? extends Maybe<? extends T>> supplier)

Description copied from interface: Maybe

Use supplied value if this one is NOTHING.

Specified by:

or in interface Maybe<T>

map

public <U> Maybe<U> map(java.util.function.Function<? super T,? extends U> mapper)

Description copied from interface: Maybe

Map.

Specified by:

map in interface Maybe<T>

flatMap

public <U> Maybe<U> flatMap(java.util.function.Function<? super T,Maybe<U>> mapper)

Description copied from interface: Maybe

Flat map.

Specified by:

flatMap in interface Maybe<T>

filter

public Maybe<T> filter(java.util.function.Predicate<? super T> predicate)

Specified by:

filter in interface Maybe<T>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

optional

public java.util.Optional<T> optional()

Description copied from interface: Maybe

Converts Maybe to the Java Optional.

Specified by:

optional in interface Maybe<T>