Previously ContentNegotiationManager continued with the next
ContentNegotiationStrategy only if the current one returned an empty
list. Now it also does that if the current ContentNegotiationStrategy
returns "*/*". Since the absence of an Accept header and "*/*" have
the same meaning, this allows a default content type to be used in
either case.
Issue: SPR-10513
HibernateJpaDialect's HibernateConnectionHandle does not call close() for Hibernate 4.x anymore, since on 4.2, the exposed Connection handle isn't a "borrowed connection" wrapper but rather the actual underlying Connection - with a close() call immediately returning the Connection to the pool and making the local handle invalid for further use within the transaction.
Issue: SPR-10395
Use LinkedHashMaps/Sets wherever exposed to users, and code tests defensively in terms of expected Map/Set ordering. Otherwise, there'll be runtime order differences between JDK 7 and JDK 8 due to internal HashMap/Set implementation differences.
Issue: SPR-9639
(cherry picked from commit 9c09a0a)
In particular, avoid accidental usage of ASM for core JDK types - which will fail in case of a new bytecode version in the JDK, even if the application itself has been compiled with an earlier bytecode target.
Issue: SPR-10292
(cherry picked from commit d3a4068)
Rework the reference documentation to better distinguish the differences
between @Bean methods used in @Comonent vs @Configuration classes. The
'Using the @Bean annotation' section now only covers concepts applicable
when using @Bean methods in @Configuration _or_ @Component classes.
Information only applicable to @Configuration classes has been moved to
a new 'Using the @Configuration annotation' section.
An additional sidebar section attempts to explain the differences
between the two approaches.
Issue: SPR-9425
Also, RequestBindingInterceptor now obtains HttpServletRequest from locally passed-in request handle and delegates to buildRequestAttributes as well now.
Issue: SPR-10342
Just AsyncAnnotationBeanPostProcessor switches "beforeExistingAdvisors" to "true" by default. So effectively, MethodValidation/PersistenceExceptionTranslationPostProcessor apply after existing advisors by default again, fixing the 3.1->3.2 regression.
Issue: SPR-10309
Assuming reference comparisons are much quicker than checking
likely-nested logger levels, perform the former first.
Also, since the reference can match only one of the instances,
use "else if" to short-circuit the search.