onWriteEntries abstract method
Saves entries in this order and returns them with ids
(StoredLogEntry.id): increasing in save order and never reused (in
SQLite, INTEGER PRIMARY KEY AUTOINCREMENT). Entries are already in
stored form (LogEntry.withoutLiveObjects). A batch is best saved in
one transaction; the sink passes the next one only after this one
completes. The base sends LogEntriesAdded.
Implementation
@protected
Future<List<StoredLogEntry>> onWriteEntries(List<LogEntry> entries);