This commits udpates ConverterFactory#getConverter to accept both
nullable and non-null T in the Converter return value.
Flexible nullability at ConverterFactory type level would have been
ideal, but is not possible due to how Kotlin deals with Class<T> when
T is nullable.
See gh-36063
This commit also replaces Arch Unit packageInfoShouldBeNullMarked() rule
by either configuring requireExplicitNullMarking = false when the whole
module does not have JSpecify annotations, or explicit @NullUnmarked
when some have and some don't.
See gh-36054
Prior to this commit, the determineBasicProperties() method in
PropertyDescriptorUtils did not reliably resolve read/write methods in
type hierarchies with generics. This utility method is used by
SimpleBeanInfoFactory which is used by BeanUtils and BeanWrapperImpl.
Thus, failure to reliably resolve read/write JavaBeans methods resulted
in bugs in certain scenarios.
For example, BeanUtils.copyProperties() randomly failed to copy certain
properties if the write method for the property could not be resolved.
To address such issues, this commit revises the implementation of
PropertyDescriptorUtils as follows.
1) Read methods with covariant return types are now consistently
resolved correctly.
2) If multiple ambiguous write methods are discovered, the algorithm now
checks for an exact match against the resolved generic parameter type
as a fallback.
Closes gh-36019
This commit updates the `HttpHeaders` javadoc to better reflect that
`asSingleValueMap()`, `asMultiValueMap()`, and `toSingleValueMap()` all
return case-sentitive map implementations.
Closes gh-36070
In gh-35947, the `Converter` contract was refined to allow for nullable
return values. This created a mismatch with the `ConverterFactory`
contract.
This commit fixes this mismatch by allowing nullable return values in
`Converter` instances created by `ConverterFactory`.
Fixes gh-36063
Prior to this commit, the `StringHttpMessageConverter` would perform a
flush after writing the body, via `StreamUtils#copy`. This operation is
not needed as a flush is already performed by the abstract class.
Flush calls by HTTP message converters is being reconsidered altogether
in gh-35427, but we should first remove this extra operation.
Closes gh-36065
Prior to this commit, we found in gh-35953 that using the `WebTestClient`
the following way leaks data buffers:
```
var body = client.get().uri("download")
.exchange()
.expectStatus().isOk()
.returnResult()
.getResponseBodyContent();
```
Here, the test performs expectations on the response status and headers,
but not on the response body. The WiretapConnector already supports this
case by subscribing to the Flux response body in those cases and
accumulating the entire content as a single byte[].
Here, the `DataBuffer` instances are not decoded by any `Decoder` and
are not released. This results in a memory leak.
This commit ensures that the automatic subscription in
`WiretapConnector` also releases the buffers automatically as the DSL
does not allow at that point to go back to performing body expectations.
Fixes gh-36050
This commit improves TestCompiler to expose both errors and warnings
instead of an opaque message. When compilation fails, both errors and
warnings are displayed.
This is particularly useful when combined with the `-Werror` option
that turns the presence of a warning into an error.
Closes gh-36037
This includes MethodParameter resolving getParameterName() by default now.
initParameterNameDiscovery(null) can be used to suppress such resolution.
Closes gh-36024
Prior to this commit, the `RfcUriParser` would ignore URI fragments if
their length is < 2. This commit fixes the length check to allow for
single char fragments when parsing URIs.
Fixes gh-36029
Sébastien Deleuze
Tran Ngoc Nhan
Manu Sridharan
Sam Brannen
Brian Clozel
木葉 Scarlet
Juergen Hoeller
Terry Tao
Stéphane Nicoll
jher235