Package io.github.blyznytsiaorg.bibernate.dao

Interface BibernateRepository<T,ID>

Type Parameters:
T - The type of the entity managed by the repository.
ID - The type of the entity's primary key.
public interface BibernateRepository<T,ID>
Generic interface for a basic Bibernate repository providing common CRUD operations.
Since:
1.0
Author:
Blyzhnytsia Team

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    delete(ID primaryKey)
    Deletes an entity by its primary key.
    void
    deleteAll(List<ID> ids)
    Deletes multiple entities by their primary keys.
    List<T>
    findAll()
    Retrieves all entities of the managed type.
    Optional<T>
    findById(ID primaryKey)
    Retrieves an entity by its primary key.
    T
    findOne(ID primaryKey)
    Retrieves an entity by its primary key.
    T
    save(T entity)
    Saves the given entity in the repository.
    void
    saveAll(List<T> entities)
    Saves a list of entities in the repository.
    void
    update(T entity)
    Updates the given entity in the repository.

  • Method Details

    • findById

      Optional<T> findById(ID primaryKey)
      Retrieves an entity by its primary key.
      Parameters:
      primaryKey - The primary key of the entity to be retrieved.
      Returns:
      An Optional containing the entity if found, or an empty Optional otherwise. 
      
 Optional<User> user = userRepository.findById(123);
 if (user.isPresent()) {
     System.out.println("User found: " + user.get());
 } else {
     System.out.println("User not found");
 }

    • findOne

      T findOne(ID primaryKey)
      Retrieves an entity by its primary key.
      Parameters:
      primaryKey - The primary key of the entity to be retrieved.
      Returns:
      The entity if found, or null otherwise. 
      
 User user = userRepository.findOne(123);
 if (user != null) {
     System.out.println("User found: " + user);
 } else {
     System.out.println("User not found");
 }

    • findAll

      List<T> findAll()
      Retrieves all entities of the managed type.
      Returns:
      A list containing all entities in the repository. 
      
 List<User> users = userRepository.findAll();
 for (User user : users) {
     System.out.println("User: " + user);
 }

    • update

      void update(T entity)
      Updates the given entity in the repository.
      Parameters:
      entity - The entity to be updated. 
      
 User user = userRepository.findOne(123);
 user.setName("John Doe");
 userRepository.update(user);

    • save

      T save(T entity)
      Saves the given entity in the repository.
      Parameters:
      entity - The entity to be saved.
      Returns:
      The saved entity. 
      
 User user = new User("Alice");
 userRepository.save(user);

    • saveAll

      void saveAll(List<T> entities)
      Saves a list of entities in the repository.
      Parameters:
      entities - The list of entities to be saved. 
      
 List<User> users = Arrays.asList(new User("Alice"), new User("Bob"));
 userRepository.saveAll(users);

    • delete

      void delete(ID primaryKey)
      Deletes an entity by its primary key.
      Parameters:
      primaryKey - The primary key of the entity to be deleted. 
      
 userRepository.delete(123);

    • deleteAll

      void deleteAll(List<ID> ids)
      Deletes multiple entities by their primary keys.
      Parameters:
      ids - The list of primary keys of entities to be deleted. 
      
 List<Integer> userIds = Arrays.asList(123, 456, 789);
 userRepository.deleteAll(userIds);