Prior to this commit, GroovyDynamicElementReader was implemented in
Groovy, which required that developers have Groovy language support
installed and configured in their IDEs.
This commit ports GroovyDynamicElementReader from Groovy to Java,
making the compilation much simpler and allowing developers to open the
project in Eclipse or VSCode (or other IDEs without Groovy support)
without compiler errors.
This commit also converts related tests from Groovy to Java.
Closes gh-27945
Prior to this commit, if a PropertySourcesPlaceholderConfigurer bean
was configured with its ignoreUnresolvablePlaceholders flag set to
true, unresolvable placeholders in an @Value annotation were not
ignored, resulting in a BeanCreationException for the bean using @Value.
For example, given a property declared as `my.app.var = ${var}` without
a corresponding `var` property declared, an attempt to resolve
`@Value("${my.app.var}")` resulted in the following exception.
java.lang.IllegalArgumentException: Could not resolve placeholder 'var' in value "${var}"
This commit fixes this by modifying
PropertySourcesPlaceholderConfigurer's postProcessBeanFactory(...)
method so that a local PropertyResolver is created if the
ignoreUnresolvablePlaceholders flag is set to true. The local
PropertyResolver then enforces that flag, since the Environment in the
ApplicationContext is most likely not configured with
ignoreUnresolvablePlaceholders set to true.
Closes gh-27947
This commit replaces the use of Collections.unmodifiableList/Set/Map
with the corresponding 'of(...)' factory methods introduced in Java 9.
Closes gh-27824
This commit adds default methods to CachingConfigurer and
JCacheConfigurer and removes the reference to their respective support
classes as they are now irrelevant.
Closes gh-27811
Name transformation is delegated to Introspector#decapitalize, which
states "but in the (unusual) special case when there is more than one
character and both the first and second characters are upper case, we
leave it alone.". This commit clarifies this behavior.
See gh-2030
The default documentation does not mention xxx*yyy pattern matching,
which is, however, supported by PatternMatchUtils. Such a pattern
can be useful for matching nested properties in all elements of a
collection, e.g. property[*].nestedProperty.
See gh-699