Class GlobalDatabaseExceptionHandler

java.lang.Object
com.app.controller.exceptionsHandler.GlobalDatabaseExceptionHandler
@RestControllerAdvice public class GlobalDatabaseExceptionHandler extends Object
Global exception handler for database-related exceptions across all controllers. Handles common persistence exceptions and returns appropriate HTTP status codes and standardized error responses.

  • Constructor Details

    • GlobalDatabaseExceptionHandler

      public GlobalDatabaseExceptionHandler()

  • Method Details

    • entityNotFoundException

      @ExceptionHandler(jakarta.persistence.EntityNotFoundException.class) @ResponseStatus(NOT_FOUND) public ResponseDto<String> entityNotFoundException(jakarta.persistence.EntityNotFoundException e)
      Handles the case when a requested entity is not found in the database. Returns HTTP 404 NOT FOUND.
      Parameters:
      e - the EntityNotFoundException thrown by JPA
      Returns:
      a response containing the error message

    • handleDataIntegrityViolation

      @ExceptionHandler({org.springframework.dao.DataIntegrityViolationException.class,org.hibernate.exception.ConstraintViolationException.class}) @ResponseStatus(CONFLICT) public ResponseDto<String> handleDataIntegrityViolation(Exception e)
      Handles data integrity violations such as unique constraint breaches. Returns HTTP 409 CONFLICT.
      Parameters:
      e - the exception representing data integrity violation
      Returns:
      a generic error message about data integrity violation

    • handleLockingExceptions

      @ExceptionHandler({org.springframework.orm.ObjectOptimisticLockingFailureException.class,org.springframework.dao.PessimisticLockingFailureException.class,org.springframework.dao.CannotAcquireLockException.class,org.springframework.dao.DeadlockLoserDataAccessException.class}) @ResponseStatus(CONFLICT) public ResponseDto<String> handleLockingExceptions(Exception e)
      Handles exceptions related to optimistic and pessimistic locking failures, including deadlocks or inability to acquire locks. Returns HTTP 409 CONFLICT.
      Parameters:
      e - the exception indicating locking conflict
      Returns:
      a user-friendly message advising to retry the operation

    • handleTransactionException

      @ExceptionHandler(org.springframework.transaction.TransactionSystemException.class) @ResponseStatus(INTERNAL_SERVER_ERROR) public ResponseDto<String> handleTransactionException(org.springframework.transaction.TransactionSystemException e)
      Handles transaction-related exceptions that occur when a transaction fails. Returns HTTP 500 INTERNAL SERVER ERROR.
      Parameters:
      e - the TransactionSystemException thrown on transaction failure
      Returns:
      a generic transaction failure message

    • handleJpaSystemException

      @ExceptionHandler(org.springframework.orm.jpa.JpaSystemException.class) @ResponseStatus(INTERNAL_SERVER_ERROR) public ResponseDto<String> handleJpaSystemException(org.springframework.orm.jpa.JpaSystemException e)
      Handles exceptions related to JPA system errors. Returns HTTP 500 INTERNAL SERVER ERROR.
      Parameters:
      e - the JpaSystemException representing JPA system errors
      Returns:
      a generic database operation error message

    • handleResourceAlreadyExistException

      @ExceptionHandler(ResourceAlreadyExistException.class) @ResponseStatus(CONFLICT) public ResponseDto<String> handleResourceAlreadyExistException(ResourceAlreadyExistException e)
      Handles the case when a resource that is attempted to be created already exists. Returns HTTP 409 CONFLICT.
      Parameters:
      e - the ResourceAlreadyExistException indicating resource duplication
      Returns:
      the error message from the exception

    • dataBaseException

      @ExceptionHandler(org.springframework.dao.DataAccessException.class) @ResponseStatus(UNAUTHORIZED) public ResponseDto<String> dataBaseException(Exception e)
      Handles generic database access exceptions not covered by more specific handlers. Returns HTTP 401 UNAUTHORIZED.
      Parameters:
      e - the database access exception
      Returns:
      a generic message indicating database operation failure