Although EvaluationContext defines the API for setting and looking up
variables, the internals of the Spring Expression Language (SpEL)
actually provide explicit support for registering functions as
variables.
This is self-evident in the two registerFunction() variants in
StandardEvaluationContext; however, functions can also be registered as
variables when using the SimpleEvaluationContext.
Since custom functions are also viable in use cases involving the
SimpleEvaluationContext, this commit documents that functions may be
registered in a SimpleEvaluationContext via setVariable().
This commit also explicitly documents the "function as a variable"
behavior in the class-level Javadoc for both StandardEvaluationContext
and SimpleEvaluationContext, as well as in the reference manual.
Closes gh-32258
This notably enables Jackson to reflectively call a user-provided
builder class and invoke its declared methods (setters and build) in
a native app.
Closes gh-32238
The cancellation of read and write inactivity tasks was done via
WebSocketHandler#afterConnectionClosed, relying on the WebSocket
library to always invoke the callback.
This change moves the cancellation to the `close` method instead
that in turn is called from DefaultStompSession#resetConnection,
in effect making the cancellation more proactive and aligned with
connection cleanup in DefaultStompSession vs relying on a
subsequent call from the WebSocket library after the connection
is closed.
Closes gh-32195
ConnectionLostException was applies only after the WebSocket library
notified us of a session close. However, read inactivity and heartbeat
send failures are also cases of the connection being lost rather than
closed intentionally.
This commit also ensures resetConnection is called after a heartbeat
write failure, consistent with other places where a transport error
is handled that implies the connection is lost.
See gh-32195
This commit focuses on improving the AOT section on programmatic
registration of additional beans. This makes it more clear that a
`BeanDefinitionRegistry` must be used and that singletons are not
processed.
Closes gh-32240
Closes gh-32241
This commit introduces new HTTP method, Content-Type, and Accept header
request predicates that handle single values. Previously, these
predicates were always dealt with as single-value collections, which
introduced computational overhead.
Closes gh-32244
Previously, RestClientAdapter claimed that it supports request
attributes when, in fact, it does not. This commit updates the
implementation accordingly.
See gh-32232
Schedulers remain strict, just plain executors are lenient on shutdown now.
An early shutdown for executors can be enforced via setStrictEarlyShutdown.
Closes gh-32226
