Package com.vaadin.flow.signals.operations

Class CancelableOperation<T extends @Nullable Object>

java.lang.Object

com.vaadin.flow.signals.operations.SignalOperation<T>

com.vaadin.flow.signals.operations.CancelableOperation<T>

Type Parameters:

T - the result type

All Implemented Interfaces:

Serializable

public class CancelableOperation<T extends @Nullable Object>
extends SignalOperation<T>

An operation that can be cancelled.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.vaadin.flow.signals.operations.SignalOperation

SignalOperation.Error<T extends @Nullable Object>, SignalOperation.Result<T extends @Nullable Object>, SignalOperation.ResultOrError<T extends @Nullable Object>

Constructor Summary

Constructors

Constructor	Description
CancelableOperation()	Creates a new cancelable operation.

Method Summary

Modifier and Type	Method	Description
void	cancel()	Cancels this operation.
boolean	isCancelled()	Checks whether this operation has been canceled.
<R> CancelableOperation<R>	map(SerializableFunction<T,R> mapper)	Creates a new cancelable operation that transforms the result value using the given mapper function.

Methods inherited from class com.vaadin.flow.signals.operations.SignalOperation

forwardMappedResult, result

Methods inherited from class java.lang.Object

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

Constructor Details

CancelableOperation

public CancelableOperation()

Creates a new cancelable operation.

Method Details

cancel

public void cancel()

Cancels this operation. Note that there's still a possibility that the operation will be successfully resolved rather than canceled if resolution and cancel happen concurrently.

isCancelled

public boolean isCancelled()

Checks whether this operation has been canceled.

Returns:

true if the operation is canceled

map

public <R> CancelableOperation<R> map(SerializableFunction<T,R> mapper)

Creates a new cancelable operation that transforms the result value using the given mapper function. Cancelling the returned operation will also cancel this operation. If this operation fails, the mapped operation will also fail with the same error.

Overrides:

map in class SignalOperation<T extends @Nullable Object>

Type Parameters:

R - the mapped result type

Parameters:

mapper - the function to transform the result value, not null

Returns:

a new cancelable operation with the mapped result, not null