EventHandler<TState extends State> class
abstract
Base class for event handlers that apply events to update state Event handlers contain the logic for applying events to state
- Implementers
Constructors
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
-
apply(
TState currentState, Event event) → TState - Apply an event to the current state and return the new state This is the core method that updates state based on events
-
canApply(
Event event) → bool - Check if this handler can apply the given event Override to provide custom event routing logic
-
checkInvariants(
TState newState, Event event) → bool - Check business invariants after applying event Override to implement domain-specific invariants
-
getCustomValidationErrors(
TState currentState, Event event) → List< String> - Override in subclasses to provide custom validation errors
-
getInvariantViolations(
TState newState, Event event) → List< String> - Get invariant violations Override to provide specific invariant violation messages
-
getValidationErrors(
TState currentState, Event event) → List< String> - Get validation errors for an event Override to provide custom validation errors
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
process(
TState currentState, Event event) → EventResult< TState> - Apply an event with full validation and error handling This is the main entry point for event application
-
toString(
) → String -
A string representation of this object.
inherited
-
validateEvent(
TState currentState, Event event) → bool - Validate an event before applying Override to provide custom validation logic
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited