Regression of DATAREST-792: PUT request for item resource with customized entity lookup fails [DATAREST-1146]

Chris Wells opened DATAREST-1146 and commented

There appears to be a regression of DATAREST-792 in v3.0.0. It works when I use Spring Boot 1.5.8.BUILD-SNAPSHOT, which uses 2.6.7.RELEASE. It fails with Spring Boot 2.0.0.BUILD-SNAPSHOT, which uses 3.0.0.RELEASE.

Simple example code:

@Component
public class RepositoryRestConfig extends RepositoryRestConfigurerAdapter {
	@Override
	public void configureRepositoryRestConfiguration(RepositoryRestConfiguration config) {
		config.withEntityLookup()
			.forRepository(PersonRepository.class)
			.withIdMapping(Person::getName)
			.withLookup(PersonRepository::findOneByName);
	}
}

@RepositoryRestResource
public interface PersonRepository extends PagingAndSortingRepository<Person, Integer> {
	@RestResource(exported = false)
	Optional<Person> findOneByName(String name);
}

Affects: 3.0 GA (Kay)