Hello!
Currently it seems that java.time package does not use Stream API in
any way. I think it would be nice to add some methods which produce
the streams. For example:
- in class Year:
// Returns sequential ordered stream of all months within this Year:
Stream<YearMonth> months();
// Returns sequential ordered stream of all days within this Year:
Stream<LocalDate> days();
// Returns sequential ordered stream of all years starting from this
// Year until the supplied year, exclusive
Stream<Year> yearsUntil(Temporal endExclusive);
- in class YearMonth:
// Returns sequential ordered stream of all days within this YearMonth:
Stream<LocalDate> days();
// Returns sequential ordered stream of all months starting from this
// YearMonth until the supplied YearMonth, exclusive
Stream<YearMonth> monthsUntil(Temporal endExclusive);
- in class LocalDate:
// Returns sequential ordered stream of all months starting from this
// LocalDate until the supplied LocalDate, exclusive
Stream<LocalDate> daysUntil(Temporal endExclusive);
The implementation of these methods could be quite simple. For example:
class Year {
public Stream<LocalDate> days() {
return IntStream.rangeClosed(1, length()).mapToObj(this::atDay);
}
}
What do you think?
With best regards,
Tagir Valeev.
