package it.cavallium.dbengine.database.collections;

import java.util.Map.Entry;
import java.util.Optional;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import reactor.util.function.Tuple2;
import reactor.util.function.Tuple3;

public interface ValueTransformer<KEY, VALUE> {

	/**
	 * Can return Flux error IOException
	 */
	<X> Flux<Tuple3<X, KEY, Optional<VALUE>>> transform(Flux<Tuple2<X, KEY>> keys);
}