Add a convenience method that allows a `MergedAnnotation` to be
converted into an `AnnotationAttributes` instance. Also rename
the `MapValues` enum to `Adapt` which generally seems to read
better.
Closes gh-22738
Flow is a Kotlin Coroutines related cold asynchronous
stream of the data, that emits from zero to N (where N
can be unbounded) values and completes normally or with
an exception.
It is conceptually the Coroutines equivalent of Flux with
an extension oriented API design, easy custom operator
capabilities and some suspending methods.
This commit leverages Flow <-> Flux interoperability
to support Flow on controller handler method parameters
or return values, and also adds Flow based extensions to
WebFlux.fn. It allows to reach a point when we can consider
Spring Framework officially supports Coroutines even if some
additional work remains to be done like adding
interoperability between Reactor and Coroutines contexts.
Flow is currently an experimental API that is expected to
become final before Spring Framework 5.2 GA.
Close gh-19975
LogMessage is an abstract class now: with internal subclasses for Supplier bindings as well as printf-style format strings with a variable number of arguments (some fixed for efficiency, varargs array as fallback), created through corresponding static factory methods.
Closes gh-22726
The cancellation callback in asynchronousReadFileChannel must be called
before the first read I/O or otherwise if cancellation signals happens
immediately the onDispose callback may be missed.
The DefaultBufferFactory workaround however remains in place until an
expected additional fix arrives with Reactor Core 3.2.9.
See gh-22107
Update `AnnotationUtils` so that `RepeatableContainers.none()` is used
when performing an exhaustive search for merged annotations. These
parameters were accidentally removed in commit 210b1789 and weren't
caught earlier because we were missing a test.
Closes gh-22702
Update `addConventionAnnotationValues` so that `value` attributes
do not override existing annotation values. The aligns the new
`MergedAnnotations` API with the previous `AnnotatedElementUtils`
logic.
Closes gh-22703
