Package io.atlassian.fugue.extensions.step

Class OptionStep4<A,B,C,D>

java.lang.Object

io.atlassian.fugue.extensions.step.OptionStep4<A,B,C,D>

Type Parameters:

A - The type of the first defined value

B - The type of the second defined value

C - The type of the third defined value

D - The type of the fourth defined value

public final class OptionStep4<A,B,C,D>
extends java.lang.Object

The fourth step of the Option type.

This class is not intended to be contructed manually, and should only be used as part of a Steps chain, started by Steps.begin(Option)

Since:

4.7.0

See Also:

for usage examples, Option

Field Summary

Fields

Modifier and Type	Field	Description
private Option<A>	option1
private Option<B>	option2
private Option<C>	option3
private Option<D>	option4

Constructor Summary

Constructors

Constructor	Description
OptionStep4(Option<A> option1, Option<B> option2, Option<C> option3, Option<D> option4)

Method Summary

Modifier and Type	Method	Description
OptionStep4<A,B,C,D>	filter(Predicate4<? super A,? super B,? super C,? super D> predicate)	Apply the provided predicate with the previous step results.
OptionStep4<A,B,C,D>	filterNot(Predicate4<? super A,? super B,? super C,? super D> predicate)	Apply the provided predicate with the previous step results.
<E> OptionStep5<A,B,C,D,E>	then(Function4<? super A,? super B,? super C,? super D,? extends Option<? extends E>> functor)	Apply the provided function with the previous Step results.
<E> OptionStep5<A,B,C,D,E>	then(java.util.function.Supplier<? extends Option<? extends E>> supplier)	Apply the provided supplier with the previous Step results.
<Z> Option<Z>	yield(Function4<? super A,? super B,? super C,? super D,Z> functor)	Terminating step expression, that will provide the previous steps to this function and return the result as a some

Methods inherited from class java.lang.Object

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

Field Detail

option1

private final Option<A> option1

option2

private final Option<B> option2

option3

private final Option<C> option3

option4

private final Option<D> option4

Constructor Detail

OptionStep4

OptionStep4(Option<A> option1,
            Option<B> option2,
            Option<C> option3,
            Option<D> option4)

Method Detail

then

public <E> OptionStep5<A,B,C,D,E> then(Function4<? super A,? super B,? super C,? super D,? extends Option<? extends E>> functor)

Apply the provided function with the previous Step results.

Internally this will perform a Option.flatMap(Function) and the result will become the next step value.

Type Parameters:

E - The type of the next step result

Parameters:

functor - The functor to be applied as a flatMap with the previous steps

Returns:

The next step class

then

public <E> OptionStep5<A,B,C,D,E> then(java.util.function.Supplier<? extends Option<? extends E>> supplier)

Apply the provided supplier with the previous Step results.

Internally this will perform a Option.flatMap(Function) and the supplier will become the next step value.

This is different to then(Function4) in that the previous step results are not provided for the new step evaluation.

Type Parameters:

E - The type of the next step result

Parameters:

supplier - The supplier to provide the result of the flatMap with the previous step.

Returns:

The next step class

filter

public OptionStep4<A,B,C,D> filter(Predicate4<? super A,? super B,? super C,? super D> predicate)

Apply the provided predicate with the previous step results.

Parameters:

predicate - The check that must be satisfied by contained values

Returns:

This step class with either the same last step value, or changed to none

filterNot

public OptionStep4<A,B,C,D> filterNot(Predicate4<? super A,? super B,? super C,? super D> predicate)

Apply the provided predicate with the previous step results.

Parameters:

predicate - The check that must be dissatisfied by contained values

Returns:

This step class with either the same last step value, or changed to none

Since:

6.1

yield

public <Z> Option<Z> yield(Function4<? super A,? super B,? super C,? super D,Z> functor)

Terminating step expression, that will provide the previous steps to this function and return the result as a some

Type Parameters:

Z - The type for the returned result

Parameters:

functor - The yield function to map on previous values

Returns:

An Option containing this result or none