Package org.dmfs.jems2.optional

Class Mapped<From,To>

java.lang.Object

org.dmfs.jems2.optional.Mapped<From,To>

All Implemented Interfaces:

Optional<To>

public final class Mapped<From,To>
extends Object
implements Optional<To>

Optional that maps an Optional if it's present using the given Function.

Constructor Summary

Constructors

Constructor	Description
Mapped(Function<? super From,? extends To> conversion, Optional<From> fromValue)

Method Summary

Modifier and Type	Method	Description
boolean	isPresent()	Returns whether the optional value is present.
To	value()	Returns the optional value.

Methods inherited from class java.lang.Object

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

Constructor Details

Mapped

public Mapped(Function<? super From,? extends To> conversion,
 Optional<From> fromValue)

Method Details

isPresent

public boolean isPresent()

Description copied from interface: Optional

Returns whether the optional value is present.

Specified by:

isPresent in interface Optional<From>

value

public To value()
         throws NoSuchElementException

Description copied from interface: Optional

Returns the optional value.

Specified by:

value in interface Optional<From>

Throws:

NoSuchElementException - if the optional value is not present.