Class OneOfN.OneOf4<T1,T2,T3,T4>

java.lang.Object

de.xima.fc.api.rest.pub.client.user.OneOfN

de.xima.fc.api.rest.pub.client.user.OneOfN.OneOf4<T1,T2,T3,T4>

Type Parameters:

T1 - Type of the value for the first case.

T2 - Type of the value for the second case.

T3 - Type of the value for the third case.

T4 - Type of the value for the fourth case.

Enclosing class:

OneOfN

public static final class OneOfN.OneOf4<T1,T2,T3,T4>
extends OneOfN

Emulates a sum type consisting of 4 cases.

Nested Class Summary

Nested classes/interfaces inherited from class OneOfN

OneOfN.Either<T1,T2>, OneOfN.EitherMatcher<R,T1,T2>, OneOfN.Just<T1>, OneOfN.JustMatcher<R,T1>, OneOfN.None, OneOfN.NoneMatcher<R>, OneOfN.OneOf3<T1,T2,T3>, OneOfN.OneOf3Matcher<R,T1,T2,T3>, OneOfN.OneOf4<T1,T2,T3,T4>, OneOfN.OneOf4Matcher<R,T1,T2,T3,T4>, OneOfN.OneOf5<T1,T2,T3,T4,T5>, OneOfN.OneOf5Matcher<R,T1,T2,T3,T4,T5>

Field Summary

Fields inherited from class OneOfN

choice, value

Method Summary

Modifier and Type	Method	Description
static <T1,T2,T3,T4> OneOfN.OneOf4<T1,T2,T3,T4>	first(T1 first)
static <T1,T2,T3,T4> OneOfN.OneOf4<T1,T2,T3,T4>	fourth(T4 fourth)
boolean	isFirst()
boolean	isFourth()
boolean	isSecond()
boolean	isThird()
<R> R	match(Function<T1,R> first, Function<T2,R> second, Function<T3,R> third, Function<T4,R> fourth)	Performs a case match on this sum type by invoking the mapping function for the matching case with the value of this sum type and returning the result.
<R> R	match(R defaultValue, OneOfN.OneOf4Matcher<R,T1,T2,T3,T4> matcher)	Performs a case match on this sum type by invoking the mapping function for the matching case with the value of this sum type and returning the result.
OneOfN.OneOf3<T2,T3,T4>	mergeFirst(Function<T1,T2> combiner)	Allows for a multi-stage reduce operation of the cases into a single value.
OneOfN.OneOf3<T1,T2,T3>	mergeLast(Function<T4,T3> combiner)	Allows for a multi-stage reduce operation of the cases into a single value.
static <T1,T2,T3,T4> OneOfN.OneOf4<T1,T2,T3,T4>	second(T2 second)
Optional<T1>	selectFirst()
Optional<T4>	selectFourth()
Optional<T2>	selectSecond()
Optional<T3>	selectThird()
static <T1,T2,T3,T4> OneOfN.OneOf4<T1,T2,T3,T4>	third(T3 third)

Methods inherited from class OneOfN

equals, getChoice, getValue, hashCode, is, select

Methods inherited from class Object

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

Method Details

match

public <R> R match(Function<T1,R> first,
 Function<T2,R> second,
 Function<T3,R> third,
 Function<T4,R> fourth)

Performs a case match on this sum type by invoking the mapping function for the matching case with the value of this sum type and returning the result.

Type Parameters:

R - Type of the result returned by each mapping function.

Parameters:

first - Mapping function for the first case.

second - Mapping function for the second case.

third - Mapping function for the third case.

fourth - Mapping function for the fourth case.

Returns:

The value returned by the mapping function for the matching case.

match

public <R> R match(R defaultValue,
 OneOfN.OneOf4Matcher<R,T1,T2,T3,T4> matcher)

Performs a case match on this sum type by invoking the mapping function for the matching case with the value of this sum type and returning the result.

Type Parameters:

R - Type of the result returned by each mapping function.

Parameters:

defaultValue - Value returned when the given matcher has no matching case.

matcher - Matcher object for each case.

Returns:

The value returned by the mapping function for the matching case.

mergeFirst

public OneOfN.OneOf3<T2,T3,T4> mergeFirst(Function<T1,T2> combiner)

Allows for a multi-stage reduce operation of the cases into a single value. Reduces the number of cases by one by mapping the first to the second case via the given mapping function.

Parameters:

combiner - Mapping function that transform the value of the first case into the second case.

Returns:

A sum type with one less case.

mergeLast

public OneOfN.OneOf3<T1,T2,T3> mergeLast(Function<T4,T3> combiner)

Allows for a multi-stage reduce operation of the cases into a single value. Reduces the number of cases by one by mapping the fourth to the third case via the given mapping function.

Parameters:

combiner - Mapping function that transform the value of the fourth case into the third case.

Returns:

A sum type with one less case.

selectFirst

public Optional<T1> selectFirst()

Returns:

The value of the first case, if a value exists for that case.

isFirst

public boolean isFirst()

Returns:

Whether a value for the first case is present.

selectSecond

public Optional<T2> selectSecond()

Returns:

The value of the second case, if a value exists for that case.

isSecond

public boolean isSecond()

Returns:

Whether a value for the second case is present.

selectThird

public Optional<T3> selectThird()

Returns:

The value of the third case, if a value exists for that case.

isThird

public boolean isThird()

Returns:

Whether a value for the third case is present.

selectFourth

public Optional<T4> selectFourth()

Returns:

The value of the fourth case, if a value exists for that case.

isFourth

public boolean isFourth()

Returns:

Whether a value for the fourth case is present.

first

public static <T1,T2,T3,T4>
OneOfN.OneOf4<T1,T2,T3,T4> first(T1 first)

Parameters:

first - The value for the first case.

Returns:

A new sum type with the value for the first case.

second

public static <T1,T2,T3,T4>
OneOfN.OneOf4<T1,T2,T3,T4> second(T2 second)

Parameters:

second - The value for the second case.

Returns:

A new sum type with the value for the second case.

third

public static <T1,T2,T3,T4>
OneOfN.OneOf4<T1,T2,T3,T4> third(T3 third)

Parameters:

third - The value for the third case.

Returns:

A new sum type with the value for the third case.

fourth

public static <T1,T2,T3,T4>
OneOfN.OneOf4<T1,T2,T3,T4> fourth(T4 fourth)

Parameters:

fourth - The value for the fourth case.

Returns:

A new sum type with the value for the fourth case.