jelilio

@Repository
public interface PostRepository extends ReactiveCrudRepository<Post, Long>, SoftDeleteRepository<Post, Long> {
  Flux<PostWithDeleteStamp> findByDeletedDateIsNotNull();

  @Query("select * FROM posts")
  Flux<PostWithDeleteStamp> findAllEntries();

  // delete (hard-delete) all posts from the database
  @Query("delete from posts")
  Mono<Void> flush();

jelilio

@Configuration
@EnableR2dbcRepositories(
    basePackages = "io.github.jelilio.feed.repository",
    repositoryBaseClass = SoftDeleteRepositoryImpl.class
)
public class DatabaseConfig {
}

jelilio

@Repository
public interface PostRepository extends SoftDeleteRepository<Post, Long>, ReactiveCrudRepository<Post, Long> {
  @NonNull
  default Mono<Post> findById(@NonNull Long id) {
    return findById(id, Post.class);
  }

  @NonNull
  default Flux<Post> findAll() {
    return findAll(Post.class);

jelilio

public interface SoftDeleteRepository<T, ID> {
  @NonNull
  Mono<Long> count(Class<T> entityClass);

  @NonNull
  Mono<Boolean> existsById(@NonNull ID id, Class<T> entityClass);

  @NonNull
  Mono<T> findById(@NonNull ID id, Class<T> entityClass);

jelilio

public class SoftDeleteRepositoryImpl<T extends AbstractSoftDeletableEntity, ID> implements SoftDeleteRepository<T, ID> {
  private final R2dbcEntityOperations entityOperations;
  private final R2dbcConverter converter;

  public SoftDeleteRepositoryImpl(R2dbcEntityOperations entityOperations, R2dbcConverter converter) {
    this.entityOperations = entityOperations;
    this.converter = converter;
  }

  @NonNull

jelilio

@Table("posts")
public class Post extends AbstractSoftDeletableEntity {
  @Id
  private Long id;

  @Column("title")
  public String title;

  @Column("body")
  public String body;

jelilio

public abstract class AbstractSoftDeletableEntity extends AbstractAuditingEntity {
  @JsonIgnore
  @Column("deleted_date")
  public Instant deletedDate;
}

jelilio

  private boolean isValidEmailAddress(String email) {
    String ePattern = "^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\])|(([a-zA-Z\\-0-9]+\\.)+[a-zA-Z]{2,}))$";
    Pattern p = Pattern.compile(ePattern);
    Matcher m = p.matcher(email);
    return m.matches();
  }

jelilio

enum class AnimationType {
    Bounce,
    LazyBounce,
    Fade,
}

private const val NumIndicators = 3
private const val IndicatorSize = 12
private const val BounceAnimationDurationMillis = 300
private const val FadeAnimationDurationMillis = 600