3.3.16.11 union: StreamingStartIndex
| Topic Version | 1 | Published | 10/31/2016 | |
| For Standard | ETP v1.1 | |||
This union represents the various ways that a consumer can request the starting index when it sends the ChannelStreamingStart message.
|
Attribute |
Description |
Data Type |
Min |
Max |
|---|---|---|---|---|
|
latestValue |
Each channel in the subscription is streamed starting with its latest measured value. |
null |
1 |
1 |
|
indexCount |
Begin streaming the channel from 'IndexCount' values before the latest value, inclusive. That is, if you specify a value of 10, you get the current value plus the 9 previous data points. If there are no IndexCount points in the channel history, you effectively get all of the channel points, but there are no notifications that less than IndexCount points are available. |
int |
1 |
1 |
|
indexValue |
Begin streaming from the specified primary index value. |
long |
1 |
1 |