Suspendable CrudRepositories for Spring-Boot
This repo contains wrapper classes for Spring-Boot CrudRepositories with a suspendable API for use with Kotlin
Coroutines.
This is achieved my moving the execution context of the repository calls to a different CoroutineDispatcher.
Copy-paste the classes from this repository to your project.
Usage as follows for both SuspendableCrudRepository and SuspendableJpaRepository:
// Define classic blocking repository first.
// Use this only as autowired bean in your actual repository component further below.
interface BlockingMyEntityRepository : CrudRepository<MyEntity, Long>
// Define the repository you are actually going to use
// as a @Component annotated class extending from SuspendableCrudRepository.
@Component
class MyEntityRepository(
@Autowired
override val internalRepo: BlockingMyEntityRepository,
) : SuspendableCrudRepository<MyEntity, Long> {
override val dispatcher: CoroutineDispatcher = Dispatchers.IO // Define your custom Dispatcher here or inject as bean as well.
}
If you require custom methods or methods annotated with @Query, you will have to define them in BlockingMyEntityRepository as usual and add a suspend override fun ...(...) with the save method signature to MyEntityRepository that uses withContext(dispatcher) to call the blocking method in BlockingMyEntityRepository, just as done everywhere in SuspendableCrudRepository.
