Replayer
Replayer is used to replay historical data with timestamps in a new, in-memory table.
Syntax
Replayer(startTime, endTime)
Parameters
| Parameter | Type | Description |
|---|---|---|
| startTime | DateTime | Historical data start time |
| endTime | DateTime | Historical data end time. |
Returns
A Replayer object that can be used to replay historical data.
Methods
Replayer supports the following methods:
replay()- Prepares a historical table for replaying.start()- Starts replaying data.shutdown()- Shuts the replayer down.
Example
The following example creates some fake historical data with timestamps and then replays it.
from deephaven import new_table
from deephaven.column import datetime_col, int_col
from deephaven.replay import TableReplayer
from deephaven.time import to_datetime
import jpy
result = new_table([
datetime_col("DateTime", [to_datetime("2000-01-01T00:00:01 NY"), to_datetime("2000-01-01T00:00:03 NY"), to_datetime("2000-01-01T00:00:06 NY")]),
int_col("Number", [1, 3, 6])
])
startTime = to_datetime("2000-01-01T00:00:00 NY")
endTime = to_datetime("2000-01-01T00:00:07 NY")
resultReplayer = TableReplayer(startTime, endTime)
replayedResult = resultReplayer.add_table(result, "DateTime")
resultReplayer.start()
- result
- replayedResult