io.micronaut.transaction

Interface SavepointManager

All Known Subinterfaces:

TransactionStatus<T>

All Known Implementing Classes:

AbstractTransactionStatus, DefaultTransactionStatus, JdbcTransactionObjectSupport

public interface SavepointManager

Interface that specifies an API to programmatically manage transaction savepoints in a generic fashion. Extended by TransactionStatus to expose savepoint management functionality for a specific transaction.

Note that savepoints can only work within an active transaction. Just use this programmatic savepoint handling for advanced needs; else, a subtransaction with PROPAGATION_NESTED is preferable.

This interface is inspired by JDBC 3.0's Savepoint mechanism but is independent from any specific persistence technology.

Since:

1.1

Author:

Juergen Hoeller

See Also:

TransactionStatus, TransactionDefinition#PROPAGATION_NESTED, Savepoint

Method Summary

Modifier and Type	Method and Description
java.lang.Object	createSavepoint() Create a new savepoint.
void	releaseSavepoint(java.lang.Object savepoint) Explicitly release the given savepoint.
void	rollbackToSavepoint(java.lang.Object savepoint) Roll back to the given savepoint.

Method Detail

createSavepoint

java.lang.Object createSavepoint()
                          throws TransactionException

Create a new savepoint. You can roll back to a specific savepoint via rollbackToSavepoint, and explicitly release a savepoint that you don't need anymore via releaseSavepoint.

Note that most transaction managers will automatically release savepoints at transaction completion.

Returns:

a savepoint object, to be passed into rollbackToSavepoint(java.lang.Object) or releaseSavepoint(java.lang.Object)

Throws:

NestedTransactionNotSupportedException - if the underlying transaction does not support savepoints

TransactionException - if the savepoint could not be created, for example because the transaction is not in an appropriate state

See Also:

Connection.setSavepoint()

rollbackToSavepoint

void rollbackToSavepoint(java.lang.Object savepoint)
                  throws TransactionException

Roll back to the given savepoint.

The savepoint will not be automatically released afterwards. You may explicitly call releaseSavepoint(Object) or rely on automatic release on transaction completion.

Parameters:

savepoint - the savepoint to roll back to

Throws:

NestedTransactionNotSupportedException - if the underlying transaction does not support savepoints

TransactionException - if the rollback failed

See Also:

Connection.rollback(java.sql.Savepoint)

releaseSavepoint

void releaseSavepoint(java.lang.Object savepoint)
               throws TransactionException

Explicitly release the given savepoint.

Note that most transaction managers will automatically release savepoints on transaction completion.

Implementations should fail as silently as possible if proper resource cleanup will eventually happen at transaction completion.

Parameters:

savepoint - the savepoint to release

Throws:

NestedTransactionNotSupportedException - if the underlying transaction does not support savepoints

TransactionException - if the release failed

See Also:

Connection.releaseSavepoint(java.sql.Savepoint)