Interface TransactionCallback<T>
- Type Parameters:
T- the result type
- All Known Implementing Classes:
TransactionCallbackWithoutResult
- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public interface TransactionCallback<T>
Callback interface for transactional code. Used withTransactionTemplate'sexecutemethod, often as anonymous class within a method implementation.Typically used to assemble various calls to transaction-unaware data access services into a higher-level service method with transaction demarcation. As an alternative, consider the use of declarative transaction demarcation (e.g. through Spring's
Transactionalannotation).- Since:
- 17.03.2003
- Author:
- Juergen Hoeller
- See Also:
TransactionTemplate,CallbackPreferringPlatformTransactionManager
Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description TdoInTransaction(TransactionStatus status)Gets called byTransactionTemplate.execute(org.springframework.transaction.support.TransactionCallback<T>)within a transactional context.
Method Detail
doInTransaction
@Nullable T doInTransaction(TransactionStatus status)
Gets called byTransactionTemplate.execute(org.springframework.transaction.support.TransactionCallback<T>)within a transactional context. Does not need to care about transactions itself, although it can retrieve and influence the status of the current transaction via the given status object, e.g. setting rollback-only.Allows for returning a result object created within the transaction, i.e. a domain object or a collection of domain objects. A RuntimeException thrown by the callback is treated as application exception that enforces a rollback. Any such exception will be propagated to the caller of the template, unless there is a problem rolling back, in which case a TransactionException will be thrown.
- Parameters:
status- associated transaction status- Returns:
- a result object, or
null - See Also:
TransactionTemplate.execute(org.springframework.transaction.support.TransactionCallback<T>),CallbackPreferringPlatformTransactionManager.execute(org.springframework.transaction.TransactionDefinition, org.springframework.transaction.support.TransactionCallback<T>)