Cannot convert from Flux<PortCall> to Mono<? extends Object>

Question

public Flux<PortCall> updateByFindById(String gsisKey, PortCall portCall) {
    return portCallRepository.findAllByVesselCode(portCall.getVesselCode())
            .collectList().flatMap(list->{
                return portCallRepository.saveAll(Flux.fromIterable(list));
            });
                    
}

Here I'm trying to invoke saveAll() of SimpleReactiveMongoRepository i.e public Flux saveAll(Iterable entities)

Answer 1

Don't you want:

public Flux<PortCall> updateByFindById(String gsisKey, PortCall portCall) {
    return portCallRepository.saveAll(
         portCallRepository.findAllByVesselCode(portCall.getVesselCode())
    );
}