Rather than create a new EvaluationContext instance per evaluation, we
now create a statically shared instance, without the root object in it,
and re-use it for all evalutations.
As of 4.3.13 MappingJackson2MessageConverter uses the MethodParameter
hint to obtain generic type information but it needs to be careful, and
nest one level, if the target parameter type has a Message wrapper.
Issue: SPR-16486
After this commit DefaultUserDestinationResolves no longer looks at
whether AntPathMatcher is configured with "." as separator and rather
expects to be explicitly told whether to keep the leading slash in
translated destinations which actually depends on what the message
broker supports (e.g. RabbitMQ "/", Artemis ".") or how it is
configured (simple broker could be either way).
There is also a minor improvement in SimpMessagingTemplate to ensure
user destinations are correctly formed based on what the
DefaultUserDestinationResolver expects. When using "." as separtor it
allows sending messages to "queue.q1" rather than "/queue.q1".
Issue: SPR-16275
SimpMessageTypeMessageCondition was lenient in matching the message
type, essentially matching on any non-null message type with an exact
match given a preference only in comparing mulitple matches.
This commit modifies matching logic to look for an exact match.
Issue: SPR-16109
Also, ChannelRegistration.setInterceptors is deprecated now: in favor of a fluently named interceptors(...) method which is documented to add the given interceptors to the channel's current list.
Issue: SPR-15962
Issue: SPR-15976
This commit introduces the following changes.
1) It adds a new Spring @NonNull annotation which allows to apply
@NonNullApi semantic on a specific element, like @Nullable does.
Combined with @Nullable, it allows partial null-safety support when
package granularity is too broad.
2) @Nullable and @NonNull can apply to ElementType.TYPE_USE in order
to be used on generic type arguments (SPR-15942).
3) Annotations does not apply to ElementType.TYPE_PARAMETER anymore
since it is not supported yet (applicability for such use case is
controversial and need to be discussed).
4) @NonNullApi does not apply to ElementType.FIELD anymore since in a
lot of use cases (private, protected) it is not part for the public API
+ its usage should remain opt-in. A dedicated @NonNullFields annotation
has been added in order to set fields default to non-nullable.
5) Updated Javadoc and reference documentation.
Issue: SPR-15756
Rossen Stoyanchev
Juergen Hoeller
igor-suhorukov
Christoph Dreis
Mariusz Jasinski
Vladimir Sitnikov
Stephane Nicoll
Rémi Alvergnat
Christoph Dreis
Tom Fitzhenry
Sebastien Deleuze