org.axonframework.common.transaction

Interface TransactionManager

All Known Implementing Classes:

NoTransactionManager, SpringTransactionManager

public interface TransactionManager

Interface towards a mechanism that manages transactions

Typically, this will involve opening database transactions or connecting to external systems.

Since:

2.0

Author:

Allard Buijze

Method Summary

Modifier and Type	Method and Description
default void	executeInTransaction(Runnable task) Executes the given task in a new Transaction.
default <T> T	fetchInTransaction(Supplier<T> supplier) Invokes the given supplier in a transaction managed by the current TransactionManager.
Transaction	startTransaction() Starts a transaction.

Method Detail

startTransaction

Transaction startTransaction()

Starts a transaction. The return value is the started transaction that can be committed or rolled back.

Returns:

The object representing the transaction

executeInTransaction

default void executeInTransaction(Runnable task)

Executes the given task in a new Transaction. The transaction is committed when the task completes normally, and rolled back when it throws an exception.

Parameters:

task - The task to execute

fetchInTransaction

default <T> T fetchInTransaction(Supplier<T> supplier)

Invokes the given supplier in a transaction managed by the current TransactionManager. Upon completion of the call, the transaction will be committed in the case of a regular return value, or rolled back in case an exception occurred.

This method is an alternative to executeInTransaction(Runnable) in cases where a result needs to be returned from the code to be executed transactionally.

Type Parameters:

T - The type of value to return

Parameters:

supplier - The supplier of the value to return

Returns:

The value returned by the supplier