Originally, `Base64Utils` was providing base64 encoding and decoding
utilities, bridging to commons-codecs or Java 8, if available. Since
then, only the Java 8 variant remains and Spring Framework 6 requires
now Java 17. This utility class doesn't provide additional checks or
syntactic sugar over what's in Java already.
As a result, this commit deprecates this class in favor of `Base64` and
schedules the removal of this class completely.
Closes gh-28434
Prior to this commit, `ConcurrentReferenceHashMap` subclasses extending
`Reference` would call `Reference::clear` right next to
`Reference::enqueue`; this is not needed as the latter calls it already.
Closes gh-28863
The "manipulating property sources" example in the Javadoc for
`ConfigurableEnvironment` states that `MutablePropertySources`
expect a `Map<String,String>`; whereas it expects a
`Map<String,Object>`.
Closes gh-29693
Prior to this commit, there was a bug in the implementation of
StandardRepeatableContainers.computeRepeatedAnnotationsMethod() which
has existed since Spring Framework 5.2 (when
StandardRepeatableContainers was introduced). Specifically,
StandardRepeatableContainers ignored any repeatable container
annotation if it declared attributes other than `value()`. However,
Java permits any number of attributes in a repeatable container
annotation.
In addition, the changes made in conjunction with gh-20279 made the bug
in StandardRepeatableContainers apparent when using the
getMergedRepeatableAnnotations() or findMergedRepeatableAnnotations()
method in AnnotatedElementUtils, resulting in regressions for the
behavior of those two methods.
This commit fixes the regressions and bug by altering the logic in
StandardRepeatableContainers.computeRepeatedAnnotationsMethod() so that
it explicitly looks for the `value()` method and ignores any other
methods declared in a repeatable container annotation candidate.
Closes gh-29685
This commit ensures that giving an anonymous class for reflection hints
registration does not result in a NullPointerException, since the
canonical name of anonymous classes is null.
Fixes gh-29657
Prior to this commit, the `ConcurrentLruCache` implementation would use
arrays of `AtomicReference` as operation buffers, and the buffer count
would be calculated with the nearest power of two for the CPU count.
This can result in significant heap memory usage as each
`AtomicReference` buffer entry adds to the memory pressure. As seen in
FasterXML/jackson-databind#3665, this can add a significant overhead for
no real added benefit for the current use case.
This commit changes the current implementation to use
`AtomicReferenceArray` as buffers and reduce the number of buffers.
JMH benchmarks results are within the error margin so we can assume that
this does not change the performance characteristics for the typical use
case in Spring Framework.
Fixes gh-29520
For a transition period, LocalVariableTableParameterNameDiscoverer logs a warning for each successful resolution attempt now, suggesting that -parameters was missed.
See gh-29531
See gh-29559
LocalVariableTableParameterNameDiscoverer is not registered by default anymore now.
Java sources should be compiled with `-parameters` instead (available since Java 8).
Also retaining standard Java parameter names for all of Spring's Kotlin sources now.
Closes gh-29531
Allow for example to remove those classes and 90 related methods when Logback is used:
- org.apache.commons.logging.LogAdapter$JavaUtilAdapter
- org.apache.commons.logging.LogAdapter$JavaUtilLog
- org.apache.commons.logging.LogAdapter$LocationResolvingLogRecord
- org.apache.commons.logging.LogAdapter$Log4jAdapter
- org.apache.commons.logging.LogAdapter$Log4jLog
- org.apache.commons.logging.LogAdapter$LogApi
- org.apache.logging.log4j.message.ObjectMessage
- org.apache.logging.log4j.message.ReusableObjectMessage
- org.apache.logging.log4j.simple.SimpleLoggerContext
- org.apache.logging.log4j.simple.SimpleLoggerContextFactory
Closes gh-29506
