FlatMapper (original) (raw)

Brian Goetz brian.goetz at oracle.com
Tue Feb 12 10:41:51 PST 2013

Here's where things have currently landed with FlatMapper -- this is a type in java.util.stream, with nested specializations.

Full bikeshed season is now open. Are we OK with the name explodeInto()? Is this general enough to join the ranks of Function and Supplier as top-level types in java.util.function?

@FunctionalInterface public interface FlatMapper<T, U> { void explodeInto(T element, Consumer sink);

 @FunctionalInterface
 interface ToInt<T> {
     void explodeInto(T element, IntConsumer sink);
 }

 @FunctionalInterface
 interface ToLong<T> {
     void explodeInto(T element, LongConsumer sink);
 }

 @FunctionalInterface
 interface ToDouble<T> {
     void explodeInto(T element, DoubleConsumer sink);
 }

 @FunctionalInterface
 interface OfIntToInt {
     void explodeInto(int element, IntConsumer sink);
 }

 @FunctionalInterface
 interface OfLongToLong {
     void explodeInto(long element, LongConsumer sink);
 }

 @FunctionalInterface
 interface OfDoubleToDouble {
     void explodeInto(double element, DoubleConsumer sink);
 }

}

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