public void Truncate() // Truncates a current database.
{
_currentJournaledMemTable.Close();
TableManager.Default.Close(this);
foreach (var pair in _secondaryIndexes)
{
pair.Value.Close(FastClose);
}
string basePath = Path.GetFullPath(Manifest.BaseFileName);
foreach (string file in Directory.GetFiles(basePath, "*.*", SearchOption.AllDirectories))
{
File.Delete(file);
}
foreach (string dir in Directory.GetDirectories(basePath, "*.*", SearchOption.AllDirectories))
{
Directory.Delete(dir, true);
}
_manifest = new Manifest(basePath);
_currentJournaledMemTable = new JournaledMemTable(_manifest.BaseFileName, _manifest.CurrentVersion(0));
_cache = new RazorCache();
_secondaryIndexes = new Dictionary <string, KeyValueStore> (StringComparer.OrdinalIgnoreCase);
Manifest.LogMessage("Database Truncated.");
}
void CheckForIncompleteJournalRotation(string baseFileName, int currentMemTableVersion)
{
int previousMemTableVersion = currentMemTableVersion - 1;
if (File.Exists(Config.JournalFile(baseFileName, previousMemTableVersion))) // Is there a left-over journal from a previous rotation that was aborted while in rotation?
{
var memTable = new JournaledMemTable(baseFileName, previousMemTableVersion);
memTable.WriteToSortedBlockTable(_manifest);
memTable.Close();
}
}
void CheckForIncompleteJournalRotation(string baseFileName, int currentMemTableVersion)
{
int previousMemTableVersion = currentMemTableVersion - 1;
if (File.Exists (Config.JournalFile (baseFileName, previousMemTableVersion))) { // Is there a left-over journal from a previous rotation that was aborted while in rotation?
var memTable = new JournaledMemTable (baseFileName, previousMemTableVersion);
memTable.WriteToSortedBlockTable (_manifest);
memTable.Close ();
}
}