Lombok讓Java再次變得酷酷的 - Grubhub Bytes

plugins {
    id 'io.franzbecker.gradle-lombok' version '1.14'
    id 'java'
}
repositories {
    jcenter() // or Maven central, required for Lombok dependency
}
lombok {
    version = '1.18.4'
    sha256 = ""
}

@Data
public class User {
  private UUID userId;
  private String email;
}

@Value
@Builder(toBuilder = true)
public class User {
  @NonNull 
  UUID userId;
  @NonNull 
  String email;
  @Singular
  Set<String> favoriteFoods;
  @NonNull
  @Builder.Default
  String avatar = “default.png”;
}

User user = User.builder()
  .userId(UUID.random())
  .email(“grubhub@grubhub.com”)
  .favoriteFood(“burritos”)
  .favoriteFood(“dosas”)
  .build()

@Slf4j // also: @CommonsLog @Flogger @JBossLog @Log @Log4j @Log4j2 @XSlf4j
public class UserService {
  // created automatically
  // private static final org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(UserService.class);
}

@Slf4j
@RequiredArgsConstructor
@FieldDefaults(makeFinal=true, level=AccessLevel.PRIVATE)
public class UserService {
  @NonNull UserDao userDao;
}

// final Map map = new HashMap<Integer, String>();
val map = new HashMap<Integer, String>();

@UtilityClass
// will be made final
public class UtilityClass {
  // will be made static
  private final int GRUBHUB = “ GRUBHUB”;

  // autogenerated by Lombok
  // private UtilityClass() {
  //   throw new java.lang.UnsupportedOperationException("This is a utility class and cannot be instantiated");
  //}

  // will be made static
  public void append(String input) {
    return input + GRUBHUB;
  }
}

public class SneakyThrows {

    @SneakyThrows
    public void sneakyThrow() {
        throw new Exception();
    }

}

@Value
@Builder(toBuilder = true)
public class User {
  @NonNull 
  UUID userId;
  @NonNull 
  String email;
  @Singular
  Set<String> favoriteFoods;
  @NonNull
  @Builder.Default
  String avatar = “default.png”;
}

public class User {

   @NonNull
   UUID userId;
   @NonNull
   String email;
   Set<String> favoriteFoods;
   @NonNull
   @Builder.Default
   String avatar = "default.png";

   @java.beans.ConstructorProperties({"userId", "email", "favoriteFoods", "avatar"})
   User(UUID userId, String email, Set<String> favoriteFoods, String avatar) {
       this.userId = userId;
       this.email = email;
       this.favoriteFoods = favoriteFoods;
       this.avatar = avatar;
   }

   public static UserBuilder builder() {
       return new UserBuilder();
   }

   @NonNull
   public UUID getUserId() {
       return this.userId;
   }

   @NonNull
   public String getEmail() {
       return this.email;
   }

   public Set<String> getFavoriteFoods() {
       return this.favoriteFoods;
   }

   @NonNull
   public String getAvatar() {
       return this.avatar;
   }

   public boolean equals(Object o) {
       if (o == this) return true;
       if (!(o instanceof User)) return false;
       final User other = (User) o;
       final Object this$userId = this.getUserId();
       final Object other$userId = other.getUserId();
       if (this$userId == null ? other$userId != null : !this$userId.equals(other$userId)) return false;
       final Object this$email = this.getEmail();
       final Object other$email = other.getEmail();
       if (this$email == null ? other$email != null : !this$email.equals(other$email)) return false;
       final Object this$favoriteFoods = this.getFavoriteFoods();
       final Object other$favoriteFoods = other.getFavoriteFoods();
       if (this$favoriteFoods == null ? other$favoriteFoods != null : !this$favoriteFoods.equals(other$favoriteFoods))
           return false;
       final Object this$avatar = this.getAvatar();
       final Object other$avatar = other.getAvatar();
       if (this$avatar == null ? other$avatar != null : !this$avatar.equals(other$avatar)) return false;
       return true;
   }

   public int hashCode() {
       final int PRIME = 59;
       int result = 1;
       final Object $userId = this.getUserId();
       result = result * PRIME + ($userId == null ? 43 : $userId.hashCode());
       final Object $email = this.getEmail();
       result = result * PRIME + ($email == null ? 43 : $email.hashCode());
       final Object $favoriteFoods = this.getFavoriteFoods();
       result = result * PRIME + ($favoriteFoods == null ? 43 : $favoriteFoods.hashCode());
       final Object $avatar = this.getAvatar();
       result = result * PRIME + ($avatar == null ? 43 : $avatar.hashCode());
       return result;
   }

   public String toString() {
       return "User(userId=" + this.getUserId() + ", email=" + this.getEmail() + ", favoriteFoods=" + this.getFavoriteFoods() + ", avatar=" + this.getAvatar() + ")";
   }

   public UserBuilder toBuilder() {
       return new UserBuilder().userId(this.userId).email(this.email).favoriteFoods(this.favoriteFoods).avatar(this.avatar);
   }

   public static class UserBuilder {
       private UUID userId;
       private String email;
       private ArrayList<String> favoriteFoods;
       private String avatar;

       UserBuilder() {
       }

       public User.UserBuilder userId(UUID userId) {
           this.userId = userId;
           return this;
       }

       public User.UserBuilder email(String email) {
           this.email = email;
           return this;
       }

       public User.UserBuilder favoriteFood(String favoriteFood) {
           if (this.favoriteFoods == null) this.favoriteFoods = new ArrayList<String>();
           this.favoriteFoods.add(favoriteFood);
           return this;
       }

       public User.UserBuilder favoriteFoods(Collection<? extends String> favoriteFoods) {
           if (this.favoriteFoods == null) this.favoriteFoods = new ArrayList<String>();
           this.favoriteFoods.addAll(favoriteFoods);
           return this;
       }

       public User.UserBuilder clearFavoriteFoods() {
           if (this.favoriteFoods != null)
               this.favoriteFoods.clear();

           return this;
       }

       public User.UserBuilder avatar(String avatar) {
           this.avatar = avatar;
           return this;
       }

       public User build() {
           Set<String> favoriteFoods;
           switch (this.favoriteFoods == null ? 0 : this.favoriteFoods.size()) {
               case 0:
                   favoriteFoods = java.util.Collections.emptySet();
                   break;
               case 1:
                   favoriteFoods = java.util.Collections.singleton(this.favoriteFoods.get(0));
                   break;
               default:
                   favoriteFoods = new java.util.LinkedHashSet<String>(this.favoriteFoods.size() < 1073741824 ? 1 + this.favoriteFoods.size() + (this.favoriteFoods.size() - 3) / 3 : Integer.MAX_VALUE);
                   favoriteFoods.addAll(this.favoriteFoods);
                   favoriteFoods = java.util.Collections.unmodifiableSet(favoriteFoods);
           }

           return new User(userId, email, favoriteFoods, avatar);
       }

       public String toString() {
           return "User.UserBuilder(userId=" + this.userId + ", email=" + this.email + ", favoriteFoods=" + this.favoriteFoods + ", avatar=" + this.avatar + ")";
       }
   }
}

@Slf4j
@RequiredArgsConstructor
@FieldDefaults(makeFinal=true, level=AccessLevel.PRIVATE)
public class UserService {
  @NonNull UserDao userDao;
}

public class UserService {
   
   private static final org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(UserService.class);
   
   private final UserDao userDao;
   
   @java.beans.ConstructorProperties({"userDao"})
   public UserService(UserDao userDao) {
       if (userDao == null) {
           throw new NullPointerException("userDao is marked @NonNull but is null")
       }
       this.userDao = userDao;
   }

 }