This interface contains the information that the Storage service needs to
vacuum a database. This interface is created as a service through the
category manager with the category “vacuum-participant”.
Please see https://developer.mozilla.org/en/mozIStorageVacuumParticipant for
more information.
Notifies when a vacuum operation begins. Listeners should avoid using the
database till onEndVacuum is received.
@note When a vacuum operation starts or ends it will also dispatch a global
“heavy-io-task” notification through the observer service with the
data argument being either “vacuum-begin” or “vacuum-end”.
| true to proceed with the vacuum, false if the participant wants to opt-out for now, it will be retried later. Useful when participant is running some other heavy operation that can't be interrupted. |
Notifies when a vacuum operation ends.
| aSucceeded | reports if the vacuum succeeded or failed. |
The expected page size in bytes for the database. The vacuum manager will
try to correct the page size during idle based on this value.
@note If the database is using the WAL journal mode, the page size won’t
be changed to the requested value. See bug 634374.
@note Valid page size values are powers of 2 between 512 and 65536.
The suggested value is mozIStorageConnection::defaultPageSize.
Connection to the database file to be vacuumed.