Expose all IDs when using Spring Data Rest

Question

I'd like to expose all IDs using a Spring Rest interface.

I know that per default an ID like this will not be exposed via the rest interface:

    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    @Column(unique=true, nullable=false)
    private Long id;

I'm aware that I can use this to expose the ID for User:

@Configuration
public class RepositoryConfig extends RepositoryRestMvcConfiguration {
    @Override
    protected void configureRepositoryRestConfiguration(RepositoryRestConfiguration config) {
        config.exposeIdsFor(User.class);
    }
}

But is there an easy way to expose all IDs without manually maintaining a list in this configureRepositoryRestConfiguration method?

Answer 1

If you want to expose the id field for all your entity classes:

import java.util.stream.Collectors;

import javax.persistence.EntityManager;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.rest.core.config.RepositoryRestConfiguration;
import org.springframework.data.rest.webmvc.config.RepositoryRestConfigurerAdapter;

@Configuration
public class MyRepositoryRestConfigurerAdapter extends RepositoryRestConfigurerAdapter {

    @Autowired
    private EntityManager entityManager;

    @Override
    public void configureRepositoryRestConfiguration(RepositoryRestConfiguration config) {
        config.exposeIdsFor(entityManager.getMetamodel().getEntities().stream().map(e -> e.getJavaType()).collect(Collectors.toList()).toArray(new Class[0]));
    }

}