com.pkware.smartcrypt.keymanagement

Interface PersistenceCallback

public interface PersistenceCallback

The Smartcrypt SDK persists user information across sessions. The PersistenceCallback is the application developer's way to control how data are retained across sessions.

Method Summary

Modifier and Type	Method and Description
Map<String,String>	onLoadData() Loads persisted data from storage.
boolean	onSaveData(Map<String,String> toSave, Set<String> toDelete)

Method Detail

onSaveData

boolean onSaveData(Map<String,String> toSave,
                   Set<String> toDelete)

Parameters:

toSave - A list of new or modified data which must be saved. The key is safe for filename and any other system sensitive to special characters. The value must be saved.

toDelete - A list of data which must be deleted. For this method to return true, each item in this collection must not exist by the time this method completes.

Returns:

true if the data were correctly saved and deleted, otherwise false

onLoadData

@Nonnull
Map<String,String> onLoadData()

Loads persisted data from storage. Implementers are responsible for returning all data they know about. Invoked when DataStorage.restore() is called. Will be invoked on the same thread.

Returns:

An empty map if no data have been persisted, otherwise all persisted values