HandlerArgumentContext class abstract interface

Defines the contract for a handler execution context, which stores and provides access to method invocation data within the JetLeaf request-handling pipeline.

A HandlerArgumentContext encapsulates runtime state for a single handler invocation — including argument values, intermediate attributes, and objects that may need to be accessed by return value resolvers, interceptors, or view renderers.

Responsibilities

  • Provide access to resolved handler arguments (getArgs)
  • Allow attribute-style retrieval of named or typed values (get, getAs)
  • Maintain request-scoped state during the handler lifecycle

Typical Usage

The execution context is created internally by the dispatcher before invoking a controller or handler method:

final context = DefaultHandlerExecutionContext();
context.setArgs(resolvedArgs);

final userId = context.get('id');
final model = context.getAs<Model>();

Extension Points

  • Implementations may add lifecycle hooks or tracking logic.
  • The context is passed downstream to components such as HandlerMethodReturnValueResolver or ExceptionResolver.
Implementers
Annotations
  • @Author.new("Evaristus Adimonyemma")

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

get([String? name]) → Object?
Retrieves a value from the context.
getArgs() → ArgumentValueHolder
Returns the current ArgumentValueHolder, which stores the resolved method arguments.
getAs<T>([String? name]) → T?
Retrieves a value of the specified type T from the context.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
setArgs(ArgumentValueHolder valueHolder) → void
Replaces the current ArgumentValueHolder with a new instance.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited