net.markenwerk.commons.datastructures

Class AbstractConvertingOptionalSelection<Payload,Result>

java.lang.Object

net.markenwerk.commons.datastructures.AbstractConvertingOptionalSelection<Payload,Result>

Type Parameters:

Payload - The payload type.

Result - The result type.

All Implemented Interfaces:

OptionalSelection<Payload,Optional<Result>>

Direct Known Subclasses:

ConvertingOptionalSelection

public abstract class AbstractConvertingOptionalSelection<Payload,Result>
extends Object
implements OptionalSelection<Payload,Optional<Result>>

An AbstractConvertingOptionalSelection is a OptionalSelection that converts the payload value of the handled Optional, if present, and returns another Optional.

Since:

1.3.0

Author:

Torsten Krause (tk at markenwerk dot net)

Constructor Summary

Constructors

Constructor and Description
AbstractConvertingOptionalSelection()

Method Summary

Modifier and Type	Method and Description
protected abstract Result	doConvert(Payload payload) Converts the payload value of the handled Optional.
Optional<Result>	onNoValue() Called by the handled Optional if it has no payload value.
Optional<Result>	onValue(Payload payload) Called by the handled Optional if it has has a value.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractConvertingOptionalSelection

public AbstractConvertingOptionalSelection()

Method Detail

onNoValue

public Optional<Result> onNoValue()

Description copied from interface: OptionalSelection

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

Specified by:

onNoValue in interface OptionalSelection<Payload,Optional<Result>>

Returns:

A result value.

onValue

public Optional<Result> onValue(Payload payload)

Description copied from interface: OptionalSelection

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

Specified by:

onValue in interface OptionalSelection<Payload,Optional<Result>>

Parameters:

payload - The payload value of the handled Optional.

Returns:

A result value.

doConvert

protected abstract Result doConvert(Payload payload)

Converts the payload value of the handled Optional.

Parameters:

payload - The payload value of the handled Optional.

Returns:

A result value.