private static void DeleteTimeout() {
Debug.Assert(CleanInfo != null);
DateTime limit = DateTime.UtcNow - kExpiredTime;
CleanInfo.Count += 1;
bool doClean = (CleanInfo.Count > kExpiredCount || CleanInfo.LastestCleanTime < limit);
if (doClean == true)
{
#region Do Clean expired session objects.
TransactionOptions opt = new TransactionOptions();
opt.IsolationLevel = IsolationLevel.ReadCommitted;
opt.Timeout = new TimeSpan(0, 0, 20);
using (TransactionScope trans = new TransactionScope(TransactionScopeOption.Required, opt)) {
using (TTSessionDbContext db = new TTSessionDbContext())
{
TTSqlHelper<TTSession> helper = new TTSqlHelper<TTSession>(db);
string sql = "WHERE " + helper.ColumnNameOf(x => x.LastAccessTimeUTC) + " < {0}";
helper.Delete(sql, limit);
CleanInfo.Count = 0;
CleanInfo.LastestCleanTime = DateTime.UtcNow;
TTDbInfo dbInfo = db.DbInfos.Single(obj => obj.Key.Equals(TTDbInfo.CleanSessionInfo));
dbInfo.Save(CleanInfo);
db.SaveChanges();
trans.Complete();
}
}
#endregion
}
}
protected virtual void Dispose(bool disposing) {
if (this._isDisposed == true)
return;
if (disposing) {
if (_db != null) {
_db.Dispose();
_db = null;
}
this._isDisposed = true;
}
}
