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!str #19732 Concise and consistent way to mark async boundaries

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Johan Andrén 2016-02-10 13:56:38 +01:00
parent d154fad4e9
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15
akka-docs/rst/java/stream/migration-guide-2.0-2.4-java.rst
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@ -104,6 +104,21 @@ Which is the same as using ``conflateWithSeed`` with an identity function::
Flow.of(Integer.class).conflateWithSeed(x -> x, (a, b) -> a + b) // Add numbers while downstream is not ready
``viaAsync`` and ``viaAsyncMat`` has been replaced with ``async()``
-------------------------------------------------------------------
``async()`` is available from ``Sink``, ``Source``, ``Flow`` and the sub flows. It provides a shortcut for
setting the attribute ``Attributes.asyncBoundary`` on a flow. The existing methods ``Flow.viaAsync`` and
``Flow.viaAsyncMat`` has been removed to make marking out asynchronous boundaries more consistent::
// This no longer works
source.viaAsync(flow)
In Akka 2.4.x this will instead look lile this:
.. includecode:: ../code/docs/stream/MigrationsJava.java#async
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