This commit adds support for WildcardType bounds resolution,
commonly seen in Kotlin due to declaration-site variance,
but also possible in Java even if less common.
Closes gh-22313
This commit adds support for Kotlin parameter default values
in handler methods. It allows to write:
@RequestParam value: String = "default"
as an alternative to:
@RequestParam(defaultValue = "default") value: String
Both Spring MVC and WebFlux are supported, including on
suspending functions.
Closes gh-21139
Related to gh-30052, we should improve ParameterNameDiscoverer
Kotlin tests to make sure DefaultParameterNameDiscoverer behaves
as expected and is consistent with
KotlinReflectionParameterNameDiscoverer behavior.
Closes gh-30618
The current test were not catching the issue because they request 1
via StepVerifier, wait for it, and then cancel. In the case of
StringDecoder it means all chunks are used up to produce that first
String and so the cancel doesn't catch any cached chunks.
Closes gh-30299
This commit makes sure that the SimpleAsyncTaskExecutor only creates a
virtual thread when the virtualThreadDelegate is set, and not an
additional kernel thread as well.
See gh-30241
VirtualThreadDelegate built on JDK 21 for multi-release jar.
Includes dedicated VirtualThreadTaskExecutor as lean option.
Includes setVirtualThreads flag on SimpleAsyncTaskExecutor.
Includes additional default methods on AsyncTaskExecutor.
Closes gh-30241
Environment.acceptsProfiles(String...) was deprecated in 5.1 in
conjunction with gh-17063 which introduced a new
acceptsProfiles(Profiles) method to replace it. The deprecated method
only supports OR semantics; whereas, the new method supports profile
expressions. Thus, the goal was to encourage people to use the more
powerful profile expressions instead of the limited OR support with
profile names.
However, there are use cases where it is difficult (if not impossible)
to provide a Profiles instance, and there are use cases where it is
simply preferable to provide profile expressions directly as strings.
To address these issues, this commit introduces a new matchesProfiles()
method in Environment that accepts a var-args list of profile
expressions.
Closes gh-30206
Prior to this commit, the toString() implementation in ProfilesParser
(which is the internal implementation of Profiles.of()) concatenated
profile expressions with " or ".
For example, the string representation of
Profiles.of("spring & framework", "java | kotlin") was
"spring & framework or java | kotlin".
This commit improves the toString() implementation by wrapping
individual profile expressions in parentheses and concatenating them
with " | ".
For example, the string representation from the previous example is now
"(spring & framework) | (java | kotlin)".
This makes it easier to read (for example, when debugging) and
comprehend.
As an additional benefit, the result of invoking toString() can even be
used as a logically equivalent composite profile expression, though
that is not the primary goal of this change.
Closes gh-30374
ObjectUtils.nullSafeToString(Object) exists for generating a string
representation of various objects in a "null-safe" manner, including
support for object graphs, collections, etc.
However, there are times when we would like to generate a "concise",
null-safe string representation that does not include an entire object
graph (or potentially a collection of object graphs).
This commit introduces ObjectUtils.nullSafeConciseToString(Object) to
address this need and makes use of the new feature in FieldError and
ConversionFailedException.
Closes gh-30286
StringUtils.truncate() serves as central, consistent way for truncating
strings used in log messages and exception failure messages, for
immediate use in LogFormatUtils and ObjectUtils.
See gh-30286
Closes gh-30290
This commit refactors some AssertJ assertions into more idiomatic and
readable ones. Using the dedicated assertion instead of a generic one
will produce more meaningful error messages.
For instance, consider collection size:
```
// expected: 5 but was: 2
assertThat(collection.size()).equals(5);
// Expected size: 5 but was: 2 in: [1, 2]
assertThat(collection).hasSize(5);
```
Closes gh-30104
