StrategySelector<Input, Output> class

Selects a FetchStrategy for a given Input at runtime.

Evaluates a list of candidates in priority order, returning the first strategy for which FetchStrategy.canHandle returns true.

This is the only place where "which pipeline?" logic lives. Every other component receives a pre-selected strategy and just runs it.

Example

final selector = StrategySelector<UrlSpark, Listing>([
  ScraperFetchStrategy(channelConfigRepo),   // preferred — fast
  AiFetchStrategy(scrapeService),            // fallback — universal
]);

// In the use case:
final strategy = await selector.select(spark);
final listing  = await strategy.fetchOne(spark);

Constructors

StrategySelector(List<FetchStrategy<Input, Output>> _candidates)

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

select(Input input) → Future<FetchStrategy<Input, Output>>

Returns the first strategy that can handle input.

selectAll(Input input) → Future<List<FetchStrategy<Input, Output>>>

Returns ALL strategies that can handle input, in priority order.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited