TypedTaskHandler<TArgs, TResult> class

Typed task handler for the recommended manual registration path.

The runtime still lowers task arguments to the durable map transport, but application code receives TArgs and returns TResult. Generated task adapters can use the same contract while keeping transport decoding out of user code.

Implemented types

• TaskHandler<TResult>
• TaskExecutionModeProvider

Available extensions

• TaskHandlerExecutionModeX

Constructors

TypedTaskHandler({required TaskDefinition<TArgs, TResult> definition, required Future<TResult> entrypoint(TaskExecutionContext context, TArgs args), TaskArgsDecoder<TArgs>? argsDecoder, TaskEntrypoint? isolateEntrypoint, TaskExecutionMode? executionMode})

Creates a typed task handler backed by definition.

const

Properties

argsDecoder → TaskArgsDecoder<TArgs>?

Optional decoder for definitions that only provide an encoder.

final

definition → TaskDefinition<TArgs, TResult>

Typed task definition used for naming, options, metadata, and results.

final

entrypoint → Future<TResult> Function(TaskExecutionContext context, TArgs args)

Typed application handler.

final

executionMode → TaskExecutionMode

Explicit execution mode, or the mode inferred from isolateEntrypoint when omitted.

no setter, override

executionMode → TaskExecutionMode

Available on TaskHandler<R>, provided by the TaskHandlerExecutionModeX extension

Returns the explicit mode when the handler provides one, otherwise preserves the historical entrypoint-based behavior.

no setter

hashCode → int

The hash code for this object.

no setter, inherited

isolateEntrypoint → TaskEntrypoint?

Optional top-level adapter used when the task is dispatched to an execution isolate. Generated handlers provide this adapter so the durable map transport is decoded inside the child isolate.

final

metadata → TaskMetadata

Describes the task for tooling and documentation.

no setter, override

name → String

The name of this task handler.

no setter, override

options → TaskOptions

The options for this task handler.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

call(TaskContext context, Map<String, Object?> args) → Future<TResult>

Executes the task with the given context and args.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited