com.objy.db.iapp
Interface PreWriteInfo

All Superinterfaces:

PersistentEventInfo

public interface PreWriteInfo

extends PersistentEventInfo

Defines behavior shared by all pre-write information objects.

Before a persistent object is written to the database, a pre-write event occurs. The object's pre-write method handles the pre-write event; the parameter to that method is a pre-write information object specifying the reason why the object is being written.

You shouldn't need to implement this interface in any class you define.

Fields inherited from interface com.objy.db.iapp.PersistentEventInfo

EVENT_ABORT, EVENT_CHECKPOINT, EVENT_CHECKPOINT_DOWNGRADE, EVENT_COMMIT, EVENT_FLUSH_CONTAINER, EVENT_FLUSH_DB, EVENT_FLUSH_FD, EVENT_MAX, EVENT_WRITE, EVENT_WRITE_BEFORE_COPY_OBJ

Method Summary

int	getReason() Gets the reason why the pre-write event occurred.

Method Detail

getReason

public int getReason()

Gets the reason why the pre-write event occurred.

Returns:

The reason why the pre-write event occurred; one of the following constants defined in the PersistentEventInfo interface:

EVENT_WRITE

The object is being written by its write method.

EVENT_WRITE_BEFORE_COPY_OBJ

The object has to be written before it can be copied.

EVENT_COMMIT

The object is being written during a commit operation.

EVENT_CHECKPOINT

The object is being written during a checkpoint operation with no downgrade of locks.

EVENT_CHECKPOINT_DOWNGRADE

The object is being written during a checkpoint operation with write locks downgraded to read locks.

EVENT_FLUSH_FD

The object is being written during a flush operation on the federated database.

EVENT_FLUSH_DB

The object is being written during a flush operation on its database.

EVENT_FLUSH_CONTAINER

The object is being written during a flush operation on its container.