FutureConverters (original) (raw)

scala.jdk.FutureConverters

This object provides extension methods that convert between Scala scala.concurrent.Future and Java java.util.concurrent.CompletionStage

When writing Java code, use the explicit conversion methods defined in javaapi.FutureConverters instead.

Note that the bridge is implemented at the read-only side of asynchronous handles, namely scala.concurrent.Future (instead of scala.concurrent.Promise) and java.util.concurrent.CompletionStage (instead of java.util.concurrent.CompletableFuture). This is intentional, as the semantics of bridging the write-handles would be prone to race conditions; if both ends (CompletableFuture and Promise) are completed independently at the same time, they may contain different values afterwards. For this reason, toCompletableFuture is not supported on the created CompletionStages.