ConditionalStep<Input, Output> mixin

Adds conditional execution capability to a chain step.

Allows skipping step execution based on a condition. The condition can be based on input data, context state, or any other logic.

Example:

class ValidationStep extends ChainStep<Data, Data>
    with ConditionalStep<Data, Data> {

  @override
  bool shouldExecute(Data data, ChainContext context) {
    return data.needsValidation;
  }

  @override
  FutureOr<Data> executeStep(Data data, ChainContext context) {
    // Validation logic
    return data.validate();
  }
}
Superclass constraints

Properties

hashCode → int
The hash code for this object.
no setterinherited
inputType → Type
Type of input data this step accepts
no setterinherited
outputType → Type
Type of output data this step produces
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

executeStep(Input data, ChainContext context) → FutureOr<Output>
Override this instead of handle
getSkipValue(Input data) → Output
Value to return when step is skipped
handle(Input data, ChainContext context) → FutureOr<Output>
Handles the input data and produces output
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
rollback(Input data, ChainContext context) → FutureOr<void>
Optional rollback logic for the step
inherited
shouldExecute(Input data, ChainContext context) → bool
Whether the step should be executed
toString() → String
A string representation of this object.
inherited

Operators

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