/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="datafile"></param>
/// <param name="offset"></param>
/// <param name="tid"></param>
/// <param name="dataTimes"></param>
/// <param name="type"></param>
/// <param name="res"></param>
public static void Read <T>(this DataFileSeriserbase datafile, long offset, int tid, List <DateTime> dataTimes, QueryValueMatchType type, HisQueryResult <T> res)
{
int timetick = 0;
var data = datafile.ReadTagDataBlock2(tid, offset, dataTimes, out timetick);
foreach (var vv in data)
{
var index = vv.Value.Item2;
DeCompressDataBlockValue <T>(vv.Key, vv.Value.Item1, timetick, type, res, new Func <byte, object>((tp) => {
object oval = null;
int ttick = 0;
int dindex = index;
if (tp == 0)
{
//往前读最后一个有效值
do
{
dindex--;
if (dindex < 0)
{
return(TagHisValue <T> .Empty);
}
var datas = datafile.ReadTagDataBlock(tid, offset, dindex, out ttick);
if (datas == null)
{
return(null);
}
oval = DeCompressDataBlockRawValue <T>(datas, 0);
}while (oval == null);
}
else
{
//往后读第一个有效值
do
{
dindex++;
if (dindex > 47)
{
return(TagHisValue <T> .Empty);
}
var datas = datafile.ReadTagDataBlock(tid, offset, dindex, out ttick);
if (datas == null)
{
return(null);
}
oval = DeCompressDataBlockRawValue <T>(datas, 1);
}while (oval == null);
}
return(oval);
}));
}
foreach (var vv in data)
{
vv.Key.Dispose();
}
data.Clear();
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="datafile"></param>
/// <param name="offset"></param>
/// <param name="tid"></param>
/// <param name="dataTime"></param>
/// <param name="type"></param>
/// <returns></returns>
public static object Read <T>(this DataFileSeriserbase datafile, long offset, int tid, DateTime dataTime, QueryValueMatchType type)
{
int timetick = 0;
int index = 0;
using (var data = datafile.ReadTagDataBlock(tid, offset, dataTime, out timetick, out index))
{
return(DeCompressDataBlockValue <T>(data, dataTime, timetick, type, new Func <byte, object>((tp) => {
TagHisValue <T> oval = TagHisValue <T> .Empty;
int ttick = 0;
int dindex = index;
if (tp == 0)
{
//往前读最后一个有效值
do
{
dindex--;
if (dindex < 0)
{
return TagHisValue <T> .Empty;
}
var datas = datafile.ReadTagDataBlock(tid, offset, dindex, out ttick);
if (datas == null)
{
return null;
}
oval = DeCompressDataBlockRawValue <T>(datas, 0);
}while (oval.IsEmpty());
}
else
{
//往后读第一个有效值
do
{
dindex++;
var datas = datafile.ReadTagDataBlock(tid, offset, dindex, out ttick);
if (datas == null)
{
return null;
}
oval = DeCompressDataBlockRawValue <T>(datas, 1);
}while (oval.IsEmpty());
}
return oval;
})));
}
}
