net.markenwerk.commons.datastructures

Interface OptionalSelection<Payload,Result>

Type Parameters:

Payload - The payload type.

Result - The result type.

All Known Implementing Classes:

AbstractConvertingOptionalSelection, AbstractOptionalSelection, ConvertingOptionalSelection, NullOptionalSelection

public interface OptionalSelection<Payload,Result>

An OptionalSelection can be used to handle an Optional and obtain a result value, whether the Optional has a value or not.

Since:

1.3.0

Author:

Torsten Krause (tk at markenwerk dot net)

Method Summary

Modifier and Type	Method and Description
Result	onNoValue() Called by the handled Optional if it has no payload value.
Result	onValue(Payload payload) Called by the handled Optional if it has has a value.

Method Detail

onNoValue

Result onNoValue()

Called by the handled Optional if it has no payload value.

Returns:

A result value.

onValue

Result onValue(Payload payload)

Called by the handled Optional if it has has a value.

Parameters:

payload - The payload value of the handled Optional.

Returns:

A result value.