public void GetFirstAndLastEpoch()
{
using (var db = new OrmLiteConnectionFactory(GetSQLiteConnectionString(), SqliteDialect.Provider).OpenDbConnection())
{
using (var cmd = db.CreateCommand())
{
cmd.CommandText = "SELECT dataTimestamp FROM data ORDER BY dataTimestamp limit 1";
using (var rdr = cmd.ExecuteReader())
{
while (rdr.Read())
{
long firstEpoch = (long) rdr[0];
FirstEpoch = new DateTime(firstEpoch);
}
}
cmd.CommandText = string.Format("SELECT dataTimestamp FROM data WHERE dataTimeStamp > {0} ORDER BY dataTimestamp limit 1", FirstEpoch.Ticks);
using (var rdr = cmd.ExecuteReader())
{
while (rdr.Read())
{
var secondEpoch = new DateTime((long)rdr[0]);
EpochLengthInSeconds = (int) secondEpoch.Subtract(FirstEpoch).TotalSeconds;
}
}
cmd.CommandText = "SELECT dataTimestamp FROM data ORDER BY dataTimestamp DESC limit 1";
using (var rdr = cmd.ExecuteReader())
{
while (rdr.Read())
{
long lastEpoch = (long) rdr[0];
LastEpoch = new DateTime(lastEpoch);
}
}
EpochCount = db.Scalar<long>(db.From<AgdTableTimestampAxis1>().Select(Sql.Count("*")));
}
}
}
