ReactiveBeforeSaveCallback doesn't work with generic type

[danielimre]

Before 3.0.5 the following was working for reactive before save callbacks:

public class MyBeforeSaveCallback<T> implements ReactiveBeforeSaveCallback<T> {
  @Override
  public Publisher<T> onBeforeSave(T entity, Document document, String collection) {...}
}

Then it could be defined as a bean like this:

@Bean
MyBeforeSaveCallback<Object> myCallback() {...}

This callback was found for arbitrary type.

In spring-data 3.0.5 this has stopped working. The callback is not found for any given type.

The change breaking this was most probably introduced with #2812

Workaround

The simplest workaround I found was just to eliminate the generic T and hardcode Object in MyBeforeSaveCallback like:

public class MyBeforeSaveCallback implements ReactiveBeforeSaveCallback<Object> {
  @Override
  public Publisher<Object> onBeforeSave(Object entity, Document document, String collection) {...}
}

[futzlig]

Yes, I have the same problem with Spring Data JDBC and my BeforeConvertCallback:

    @Bean
    BeforeConvertCallback<DomainEntity> uuidGenerator() {
        return entity -> {
            if (entity.getId() == null) {
                entity.setId(UUID.randomUUID());
            }
            return entity;
        };
    }

It's not called anymore. The Workaround with an extra class resolves the problem. DomainEntity here is an interface.

[odrotbohm]

Sorry for the inconvenience. This should be fixed in the 3.0.6 and 3.1 snapshots. Feel free to give them a try!