Interface TransactionCallback<T>

Type Parameters:

T - the result type

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 reactive transactional code. Used with TransactionalOperator's execute method, 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 (for example, through Spring's Transactional annotation).

Since:

5.2

Author:

Mark Paluch, Juergen Hoeller

See Also:

• TransactionalOperator

Method Summary

Modifier and Type	Method	Description
Publisher<T>	doInTransaction(ReactiveTransaction status)	Gets called by TransactionalOperator within a transactional context.

Method Details

doInTransaction

Publisher<T> doInTransaction(ReactiveTransaction status)

Gets called by TransactionalOperator 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, for example, setting rollback-only.

Parameters:

status - associated transaction status

Returns:

a result publisher

See Also:

• TransactionalOperator.transactional(Flux)