CategoryRepository (interviewprep-server 0.0.1-SNAPSHOT API)

All Superinterfaces:

CrudRepository<Category,UUID>, JpaRepository<Category,UUID>, PagingAndSortingRepository<Category,UUID>, QueryByExampleExecutor<Category>, Repository<Category,UUID>
```
public interface CategoryRepository
extends JpaRepository<Category,UUID>
```
This interface defines various methods that can be used to query the database.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Optional<Category>`	`findByExternalKey(UUID externalKey)`	Returns a `Category` object that matches the external key.

Methods inherited from interface org.springframework.data.repository.CrudRepository
count, delete, deleteAll, deleteAll, deleteAllById, deleteById, existsById, findById, save

Methods inherited from interface org.springframework.data.jpa.repository.JpaRepository
deleteAllByIdInBatch, deleteAllInBatch, deleteAllInBatch, deleteInBatch, findAll, findAll, findAll, findAll, findAllById, flush, getById, getOne, saveAll, saveAllAndFlush, saveAndFlush

Methods inherited from interface org.springframework.data.repository.PagingAndSortingRepository
findAll

Methods inherited from interface org.springframework.data.repository.query.QueryByExampleExecutor
count, exists, findAll, findOne

- Method Detail
  - findByExternalKey
```
Optional<Category> findByExternalKey(UUID externalKey)
```
    Returns a Category object that matches the external key.
    
    Parameters:
    
    externalKey - External key in the form of a universally unique identifier.
    
    Returns:
    
    An optional Category object.