Package de.srsoftware.tools

Schnittstelle Result<Content>

Typparameter:

Content - The expected type of the result payload

Alle bekannten Implementierungsklassen:

Error, Payload

public interface Result<Content>

This interface can be used as a result type for functions that may return something or an error.

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
<Mapped> Result<Mapped>	map(Function<Result<Content>,Result<Mapped>> mapper)	Transform this Result object to another via a mapping function.
Optional<Content>	optional()	Create an Optional from a Result.
<Inner> Stream<Result<Inner>>	stream()	Create a stream of the Payload.
static <T> Result<T>	transform(Result<?> res)	Transforms the Result to an Error with appropriate payload type

Methodendetails

map

<Mapped> Result<Mapped> map(Function<Result<Content>,Result<Mapped>> mapper)

Transform this Result object to another via a mapping function.

Typparameter:

Mapped - the payload type of the result of the mapping function

Parameter:

mapper - a function, that processes results and produces results

Gibt zurück:

the result of the mapping function

optional

Optional<Content> optional()

Create an Optional from a Result.

Gibt zurück:

An optional containing the Result`s content, if set.

stream

<Inner> Stream<Result<Inner>> stream()

Create a stream of the Payload. This may be suitable, if the payload is a collection.

Typparameter:

Inner - the type of the payloads of the elements of the stream

Gibt zurück:

a stream of results

transform

static <T> Result<T> transform(Result<?> res)

Transforms the Result to an Error with appropriate payload type

Typparameter:

T - the payload type of the returned error

Parameter:

res - if this reslult is an error, it will be transformed using the Error.transform method, otherwise a new Error will be created

Gibt zurück:

the transformed error