This commit updates the whole Spring Framework codebase to use JSpecify
annotations instead of Spring null-safety annotations with JSR 305
semantics.
JSpecify provides signficant enhancements such as properly defined
specifications, a canonical dependency with no split-package issue,
better tooling, better Kotlin integration and the capability to specify
generic type, array and varargs element null-safety. Generic type
null-safety is not defined by this commit yet and will be specified
later.
A key difference is that Spring null-safety annotations, following
JSR 305 semantics, apply to fields, parameters and return values,
while JSpecify annotations apply to type usages. That's why this
commit moves nullability annotations closer to the type for fields
and return values.
See gh-28797
Prior to this commit, the equals() implementation in AdvisedSupport's
MethodCacheKey only considered methods to be equal based on an identity
comparison (`==`), which led to duplicate entries in the method cache
for the same logical method.
This is caused by the fact that AdvisedSupport's
getInterceptorsAndDynamicInterceptionAdvice() method is invoked at
various stages with different Method instances for the same method:
1) when creating the proxy
2) when invoking the method via the proxy
The reason the Method instances are different is due to the following.
- Methods such as Class#getDeclaredMethods() and
Class#getDeclaredMethod() always returns "child copies" of the
underlying Method instances -- which means that `equals()` should be
used instead of (or in addition to) `==` whenever the compared Method
instances can come from different sources.
With this commit, the equals() implementation in MethodCacheKey now
considers methods equal based on identity or logical equality, giving
preference to the quicker identity check.
See gh-32586
Closes gh-33915
This commit adapts AOT support in various modules after the RuntimeHints
and related deprecation changes.
`MemberCategory.INTROSPECT_*` hints are now removed and
`MemberCategory.*_FIELDS` are replaced with
`MemberCategory.INVOKE*_FIELDS` when invocation is needed.
Usage of `RuntimeHintsAgent` are also deprecated.
Closes gh-33847
The commit skips using UndeclaredThrowableStrategy for
Kotlin classes in CglibAopProxy in order to fix a
related regression caused by gh-32469.
See gh-33585
