接口 TransactionSynchronization
- 所有超级接口:
Flushable
- 所有已知实现类:
ResourceHolderSynchronization
,SpringFlushSynchronization
,SpringSessionSynchronization
,TransactionSynchronizationAdapter
public interface TransactionSynchronization extends Flushable
Interface for transaction synchronization callbacks. Supported by AbstractPlatformTransactionManager.TransactionSynchronization implementations can implement the Ordered interface to influence their execution order. A synchronization that does not implement the Ordered interface is appended to the end of the synchronization chain.
System synchronizations performed by Spring itself use specific order values, allowing for fine-grained interaction with their execution order (if necessary).
- 从以下版本开始:
- 02.06.2003
- 作者:
- Juergen Hoeller
- 另请参阅:
TransactionSynchronizationManager
,AbstractPlatformTransactionManager
,DataSourceUtils.CONNECTION_SYNCHRONIZATION_ORDER
字段概要
字段 修饰符和类型 字段 说明 static int
STATUS_COMMITTED
Completion status in case of proper commit.static int
STATUS_ROLLED_BACK
Completion status in case of proper rollback.static int
STATUS_UNKNOWN
Completion status in case of heuristic mixed completion or system errors.
方法概要
所有方法 实例方法 默认方法 修饰符和类型 方法 说明 default void
afterCommit()
Invoked after transaction commit.default void
afterCompletion(int status)
Invoked after transaction commit/rollback.default void
beforeCommit(boolean readOnly)
Invoked before transaction commit (before "beforeCompletion").default void
beforeCompletion()
Invoked before transaction commit/rollback.default void
flush()
Flush the underlying session to the datastore, if applicable: for example, a Hibernate/JPA session.default void
resume()
Resume this synchronization.default void
suspend()
Suspend this synchronization.
字段详细资料
STATUS_COMMITTED
static final int STATUS_COMMITTED
Completion status in case of proper commit.- 另请参阅:
- 常量字段值
STATUS_ROLLED_BACK
static final int STATUS_ROLLED_BACK
Completion status in case of proper rollback.- 另请参阅:
- 常量字段值
STATUS_UNKNOWN
static final int STATUS_UNKNOWN
Completion status in case of heuristic mixed completion or system errors.- 另请参阅:
- 常量字段值
方法详细资料
suspend
default void suspend()
Suspend this synchronization. Supposed to unbind resources from TransactionSynchronizationManager if managing any.
resume
default void resume()
Resume this synchronization. Supposed to rebind resources to TransactionSynchronizationManager if managing any.
flush
default void flush()
Flush the underlying session to the datastore, if applicable: for example, a Hibernate/JPA session.- 指定者:
flush
在接口中Flushable
- 另请参阅:
TransactionStatus.flush()
beforeCommit
default void beforeCommit(boolean readOnly)
Invoked before transaction commit (before "beforeCompletion"). Can e.g. flush transactional O/R Mapping sessions to the database.This callback does not mean that the transaction will actually be committed. A rollback decision can still occur after this method has been called. This callback is rather meant to perform work that's only relevant if a commit still has a chance to happen, such as flushing SQL statements to the database.
Note that exceptions will get propagated to the commit caller and cause a rollback of the transaction.
- 参数:
readOnly
- whether the transaction is defined as read-only transaction- 抛出:
RuntimeException
- in case of errors; will be propagated to the caller (note: do not throw TransactionException subclasses here!)- 另请参阅:
beforeCompletion()
beforeCompletion
default void beforeCompletion()
Invoked before transaction commit/rollback. Can perform resource cleanup before transaction completion.This method will be invoked after
beforeCommit
, even whenbeforeCommit
threw an exception. This callback allows for closing resources before transaction completion, for any outcome.- 抛出:
RuntimeException
- in case of errors; will be logged but not propagated (note: do not throw TransactionException subclasses here!)- 另请参阅:
beforeCommit(boolean)
,afterCompletion(int)
afterCommit
default void afterCommit()
Invoked after transaction commit. Can perform further operations right after the main transaction has successfully committed.Can e.g. commit further operations that are supposed to follow on a successful commit of the main transaction, like confirmation messages or emails.
NOTE: The transaction will have been committed already, but the transactional resources might still be active and accessible. As a consequence, any data access code triggered at this point will still "participate" in the original transaction, allowing to perform some cleanup (with no commit following anymore!), unless it explicitly declares that it needs to run in a separate transaction. Hence: Use
PROPAGATION_REQUIRES_NEW
for any transactional operation that is called from here.- 抛出:
RuntimeException
- in case of errors; will be propagated to the caller (note: do not throw TransactionException subclasses here!)
afterCompletion
default void afterCompletion(int status)
Invoked after transaction commit/rollback. Can perform resource cleanup after transaction completion.NOTE: The transaction will have been committed or rolled back already, but the transactional resources might still be active and accessible. As a consequence, any data access code triggered at this point will still "participate" in the original transaction, allowing to perform some cleanup (with no commit following anymore!), unless it explicitly declares that it needs to run in a separate transaction. Hence: Use
PROPAGATION_REQUIRES_NEW
for any transactional operation that is called from here.- 参数:
status
- completion status according to theSTATUS_*
constants- 抛出:
RuntimeException
- in case of errors; will be logged but not propagated (note: do not throw TransactionException subclasses here!)- 另请参阅:
STATUS_COMMITTED
,STATUS_ROLLED_BACK
,STATUS_UNKNOWN
,beforeCompletion()