SessionSynchronizationpublic interface SessionSynchronization The SessionSynchronization interface allows a session Bean instance
to be notified by its container of transaction boundaries.
An session Bean class is not required to implement this interface.
A session Bean class should implement this interface only if it wishes
to synchronize its state with the transactions. |
| Methods Summary |
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| public void | afterBegin()The afterBegin method notifies a session Bean instance that a new
transaction has started, and that the subsequent business methods on the
instance will be invoked in the context of the transaction.
The instance can use this method, for example, to read data
from a database and cache the data in the instance fields.
This method executes in the proper transaction context.
| | public void | afterCompletion(boolean committed)The afterCompletion method notifies a session Bean instance that a
transaction commit protocol has completed, and tells the instance
whether the transaction has been committed or rolled back.
This method executes with no transaction context.
This method executes with no transaction context.
| | public void | beforeCompletion()The beforeCompletion method notifies a session Bean instance that
a transaction is about to be committed. The instance can use this
method, for example, to write any cached data to a database.
This method executes in the proper transaction context.
Note: The instance may still cause the container to
rollback the transaction by invoking the setRollbackOnly() method
on the instance context, or by throwing an exception.
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