/// <summary>
/// 写入单个标签点的历史数据
/// 这个方法主要用于从csv文件导入历史数据到golden数据库中。从csv读取的数据是字符串型二维数组，因此这里的历史数据入参是字符串型二维数组，而不是List<PValue>
/// </summary>
/// <param name="tagname"></param>
/// <param name="data"></param>
/// <returns></returns>
public int PutArchivedValues(string tagname, string[][] data)
{
//注意，只能向数据库第一个有效数据的时间之后，插入历史数据。
//——如果插入的值得历史时刻在第一个有效值前，则插入不返回错误，但是数据写不进去。
//准备数据
PISDK.PIValues pivalues = new PISDK.PIValues(); //新建PIValues，ReadOnly属性为true
pivalues.ReadOnly = false; //只有将PIValues的readonly属性置为false，才能写入。
//数据点的描述，是一个NamedValues类型。该类型是一个集合。可以添加不同的描述项，并给项设定值
NamedValues nvatts = new NamedValues();
nvatts.Add("questionable", true);
//将数据写入pivalues
//——只使用第1个值即实时值，第2个值时间。
int i = 0;
//try
//{
for (i = 0; i < data.Length; i++)
{
try
{
//在PI导出的数据中，value有可能是字符串。有时候表示服务器启停，有时候表示“IO timeout”等，这些值都无法转换成数值型，必须跳过。
if (data[i] != null && data[i].Length != 0)
{
pivalues.Add(Convert.ToDateTime(data[i][2]), Convert.ToDouble(data[i][1]), nvatts);
}
}
catch
{
continue;
}
}
//}
//catch (Exception ex)
//{
// //将pi的异常PgimDataException记录在_exception中，并以PgimDataException的名称继续抛出异常
// this._exception = "写历史数据时，转换数据格式错误！错误行数"+i.ToString();
// throw ex; //将pgim的异常继续向外传递。
//}
//使用piPoint.Data.UpdateValues更新点历史数据
//this._piPoint = new PISDK.PIPoint();
try
{
this._piPoint = this._piServer.PIPoints[tagname];
PISDKCommon.PIErrors pierror = this._piPoint.Data.UpdateValues(pivalues);
//处理写入结果
return(pierror.Count);
}
catch (Exception ex)
{
//将pi的异常PgimDataException记录在_exception中，并以PgimDataException的名称继续抛出异常
this._exception = "PI其他未知错误。通常是服务器故障、标签中对应的服务器名称不正确导致！";
throw ex; //将pgim的异常继续向外传递。
return(-1);
}
}
public pointData getPointList(string tagName, string start, string end)
{
PISDK.PIValues PIconnect = new PISDK.PIValues(); //Create new instance of PI value
PIconnect = PI_SERVER.PIPoints[tagName].Data.RecordedValues(start, end);
pointData temp = new pointData();
foreach (PIValue val in PIconnect)
{
if (val.Value as DigitalState == null) // if point has data, Digital state means point has no data
{
object objtemp = val.Value;
temp.value = objtemp.ToString();
objtemp = val.TimeStamp.LocalDate;
temp.timestamp = objtemp.ToString();
}
}
lastValueTime = end;
return temp;
}
public pointData updatePointValue(string tagName, string start, string end)
{
PISDK.PIValues PIconnect = new PISDK.PIValues(); //Create new instance of PI value
PIconnect = PI_SERVER.PIPoints[tagName].Data.RecordedValues(start, end);
pointData temp = new pointData();
foreach (PIValue val in PIconnect)
{
if (val.Value as DigitalState == null) // if point has data, Digital state means point has no data
{
object objtemp = val.Value;
temp.value = objtemp.ToString();
objtemp = val.TimeStamp.LocalDate;
temp.timestamp = objtemp.ToString();
}
}
lastValueTime = end;
return(temp);
}
public int[] getPointList(string tagName, string start, string end)
{
PISDK.PIValues PIconnect = new PISDK.PIValues(); //Create new instance of PI value
PIconnect = PI_SERVER.PIPoints[tagName].Data.RecordedValues(start, end);
pointData temp = new pointData();
int counter = 0;
int[] PIlist = new int[60];
foreach (PIValue val in PIconnect)
{
if (val.Value as DigitalState == null) // if point has data, Digital state means point has no data
{
object objtemp = val.Value;
temp.value = objtemp.ToString();
objtemp = val.TimeStamp.LocalDate;
temp.timestamp = objtemp.ToString();
PIlist[counter] = int.Parse(temp.value); // add each PI point to the list
counter++;
}
}
lastValueTime = end;
return PIlist;
}
public int[] getPointList(string tagName, string start, string end)
{
PISDK.PIValues PIconnect = new PISDK.PIValues(); //Create new instance of PI value
PIconnect = PI_SERVER.PIPoints[tagName].Data.RecordedValues(start, end);
pointData temp = new pointData();
int counter = 0;
int[] PIlist = new int[60];
foreach (PIValue val in PIconnect)
{
if (val.Value as DigitalState == null) // if point has data, Digital state means point has no data
{
object objtemp = val.Value;
temp.value = objtemp.ToString();
objtemp = val.TimeStamp.LocalDate;
temp.timestamp = objtemp.ToString();
PIlist[counter] = int.Parse(temp.value); // add each PI point to the list
counter++;
}
}
lastValueTime = end;
return PIlist;
}
/// <summary>
/// 查询间隔数据
/// </summary>
/// <param name="tagName">查询条件</param>
/// <param name="startTime">起始时间</param>
/// <param name="endTime">结束时间</param>
/// <param name="sampleInterVal">间隔时间：1h，2h，3h，4h</param>
/// <param name="fvc">过滤方式</param>
/// <param name="filter">过滤</param>
/// <returns></returns>
public virtual DataTable GetInterpolatedValues(string[] tagName, DateTime startTime, DateTime endTime, object sampleInterVal, string filter)
{
if (this.server == null)
{
//log4net.ILog log = log4net.LogManager.GetLogger(this.GetType());
//log.Debug("PIServer未初始化");
logs.writelog("PIServer未初始化");
throw new Exception("PIserver未初始化。");
}
//PIValues pivalues = null;
DataSet ds = new DataSet();
//声明一个数据表，表名为LoadValue
DataTable dt = new DataTable("LoadValue");
//该表有3列，分别为piID，ptValue，ptTime
dt.Columns.Add("ptID", typeof(System.String));
dt.Columns.Add("ptValue", typeof(System.String));
dt.Columns.Add("ptTime", typeof(DateTime));
//StringBuilder sb = new StringBuilder();
//由于历史数据可能过多，所以选择用datatable返回
try
{
if (!this.server.Connected)
{
this.server.Open(this.piConnectionString);
}
//分别对pointID取数
for (int i = 0; i < tagName.Length; i++)
{
//pisdk的pipoint为pointID对应的原子点名
PISDK.PIPoint piPoint = this.server.PIPoints[tagName[i].ToString()];
//取2min内的2个点
PISDK.PIValues piValues = piPoint.Data.InterpolatedValues(
System.DateTime.Now.AddMinutes(-2),
System.DateTime.Now.AddMinutes(-1),
3,
"1=1",
PISDK.FilteredViewConstants.fvShowFilteredState,
new PISDKCommon.PIAsynchStatus());
if (piValues.Count > 0)
{
//将每个点对应的数据和事件加入到数据表LoadValue中
for (int j = 1; j <= piValues.Count; j++)
{
DataRow dr = dt.NewRow();
dr["ptID"] = tagName[i];
dr["ptValue"] = piValues[j].Value.ToString();
dr["ptTime"] = piValues[j].TimeStamp.LocalDate;
dt.Rows.Add(dr);
}
}
}
}
catch (Exception ex)
{
//log4net.ILog log = log4net.LogManager.GetLogger(this.GetType());
//log.Error(ex);
logs.writelog("按照时间间隔查询数据发生错误:" + ex);
throw new Exception("按照时间间隔查询数据发生错误:" + ex.Message);
}
return(dt);
}