public void switchAdapter(
final SQLiteDatabase db, final IDBAdapter oldAdapter, final IDBAdapter newAdapter) {
final Map<String, BookSettings> bookSettings = oldAdapter.getAllBooks();
oldAdapter.deleteAll();
oldAdapter.onDestroy(db);
newAdapter.onCreate(db);
newAdapter.restoreBookSettings(bookSettings.values());
}
@Override
public Map<String, BookSettings> getAllBooks() {
return adapter.getAllBooks();
}