public string GetValue(DateTime dt)
{
string sql = string.Format("SELECT {0} FROM {1}_result WHERE nodeid = {2} and time < '{3}' order by time desc limit 1 ", Name + ",time",
CurrentSensor.Model.Sname, CurrentSensor.NodeId,
dt.ToString("yyyy-MM-dd HH:mm"));
object o = null;
try
{
o = SqlLiteHelper.ExecuteScalar(ConfigurationManager.AppSettings["dbPath"], sql);
}
catch (Exception ex)
{ }
string result = o == null ? "" : o.ToString();
if (!string.IsNullOrWhiteSpace(result))
{
try
{
result = double.Parse(result).ToString("0.##");
}
catch (Exception ex)
{
}
}
return(result);
}
void InitAlarm()
{
//初始化策略 . 1.首先查询数据库,查询出所有的Strategy及其对应关系
//ConfigData.AllStrategy
string stA = "SELECT COUNT(*) FROM sqlite_master where type = 'table' and name = 'T_ALARM'";
string stM = "SELECT COUNT(*) FROM sqlite_master where type = 'table' and name = 'T_ALARM_SENSOR_MAP'";
object objA = SqlLiteHelper.ExecuteScalar(db, stA);
if (Convert.ToInt32(objA) == 0)
{
int res = SqlLiteHelper.ExecuteNonQuery(db, createAlarmSql);
}
object objM = SqlLiteHelper.ExecuteScalar(db, stM);
if (Convert.ToInt32(objM) == 0)
{
int res = SqlLiteHelper.ExecuteNonQuery(db, createMapSql);
}
DataTable dtA = SqlLiteHelper.ExecuteReader(db, selectAlarmSql);
DataTable dtM = SqlLiteHelper.ExecuteReader(db, selectMapSql);
//处理查询下来的数据表
foreach (DataRow r in dtA.Rows)
{
AlarmStrategy als;
if (ConfigData.AllStrategy.Exists(ast => ast.Name == r["name"].ToString()))
{
als = ConfigData.AllStrategy.Find(ast => ast.Name == r["name"].ToString());
}
else
{
als = new AlarmStrategy();
als.Name = r["name"].ToString();
ConfigData.AllStrategy.Add(als);
}
Alarm24 a24 = new Alarm24();
als.A24s.Add(a24);
a24.Field = r["field"].ToString();
int warnTest = 0;
if (int.TryParse(r["warn"].ToString(), out warnTest))
{
a24.Warn = warnTest;
}
for (int i = 0; i < a24.Hs.Length; i++)
{
string ht = string.Format("h{0}t", i);
string hl = string.Format("h{0}l", i);
double tTest = 0;
double lTest = 0;
if (double.TryParse(r[ht].ToString(), out tTest))
{
a24.Hs[i].Top = tTest;
}
if (double.TryParse(r[hl].ToString(), out lTest))
{
a24.Hs[i].Low = lTest;
}
}
}
//处理AlarmMap
foreach (DataRow r in dtM.Rows)
{
//aname varchar(50), date varchar(50), uid varchar(50), node varchar(50), port varchar(50)
string aname = r["aname"].ToString();
string date = r["date"].ToString();
string uid = r["uid"].ToString();
string node = r["node"].ToString();
string port = r["port"].ToString();
Sensor sensor = ConfigData.allSensors.Find(s => s.Uid == uid && s.NodeId == node && s.PortId == port);
AlarmStrategy ast = ConfigData.AllStrategy.Find(o => o.Name == aname);
if (sensor != null && ast != null)
{
if (!sensor.AlarmDic.ContainsKey(date))
{
sensor.AlarmDic.Add(date, ast);
}
}
}
}