spring-framework/spring-core
Brian Clozel 38019d2249 Allow static registration of RuntimeHints
Prior to this commit, we could only contribute `RuntimeHints` through
two mechanisms:
* `AotContributingBeanFactoryPostProcessor`, consdering the entire
  `BeanFactory` and designed for contributing both code and hints.
* `AotContributingBeanPostProcessor`, consdering beans one by one, but
  also designed for contributing both code and hints.

There are cases where libraries and applications want to contribute
`RuntimeHints` only, in a more static fashion: a dependency being
present, or a piece of infrastructure being considered by the
application context are good enough signals to contribute hints about
resources or reflection.

This commit adds the `RuntimeHintsRegistrar` contract for these cases.
Implementations can be declared as `spring.factories` and they will be
processed as soon as they're detected on the classpath. They can also be
declared with `@ImportRuntimeHints` and they will be processed if the
annotated bean definition is considered in the application context.
This annotation should be mainly used on configuration classes and on
bean methods.

```
@Configuration
@ImportRuntimeHints(CustomRuntimeHintsRegistrar.class)
public class MyConfiguration {

  @Bean
  @ImportRuntimeHints(OtherRuntimeHintsRegistrar.class)
  public MyBean myBean() {
    //...
  }
}
```

Closes gh-28160
2022-04-14 13:06:43 +02:00
..
src Allow static registration of RuntimeHints 2022-04-14 13:06:43 +02:00
spring-core.gradle Implement GraalVM native JSON configuration generation 2022-03-16 16:15:58 +01:00