C++ UA Server SDK
1.5.2.336
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The HistoryReadEventContext class contains the settings for a HistoryReadEvent call. More...
#include <uaclientsdk.h>
Public Member Functions | |
HistoryReadEventContext () | |
Creates a HistoryReadEventContext object with default settings described with the parameters. More... | |
~HistoryReadEventContext () | |
Destroys the HistoryReadEventContext object. More... | |
Public Attributes | |
OpcUa_TimestampsToReturn | timeStamps |
Enumeration for the timestamps to return with the events. More... | |
OpcUa_Boolean | bReleaseContinuationPoints |
This parameter must be set to true to release a continuation point without requesting more data. More... | |
OpcUa_UInt32 | numValuesPerNode |
Parameter to limit the number of results per node. More... | |
UaDateTime | startTime |
The start time of the requested time domain. More... | |
UaDateTime | endTime |
The end time of the requested time domain. More... | |
UaEventFilter | eventFilter |
The event filter for the history read. More... | |
The HistoryReadEventContext class contains the settings for a HistoryReadEvent call.
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inline |
Creates a HistoryReadEventContext object with default settings described with the parameters.
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inline |
Destroys the HistoryReadEventContext object.
OpcUa_Boolean UaClientSdk::HistoryReadEventContext::bReleaseContinuationPoints |
This parameter must be set to true to release a continuation point without requesting more data.
The default value is false.
UaDateTime UaClientSdk::HistoryReadEventContext::endTime |
The end time of the requested time domain.
The values can be read in inverse order if the end time is before the start time. The default value is null.
UaEventFilter UaClientSdk::HistoryReadEventContext::eventFilter |
The event filter for the history read.
This is the same event filter used for getting new events through an event monitored item. The default value is null.
OpcUa_UInt32 UaClientSdk::HistoryReadEventContext::numValuesPerNode |
Parameter to limit the number of results per node.
A server can further limit the number it returns. If the client or server limit exceeds the number of results available, a continuation point is returned in the history read response. The default value is 0.
UaDateTime UaClientSdk::HistoryReadEventContext::startTime |
The start time of the requested time domain.
The values can be read in inverse order if the end time is before the start time. The default value is null.
OpcUa_TimestampsToReturn UaClientSdk::HistoryReadEventContext::timeStamps |
Enumeration for the timestamps to return with the events.
The default value is Source.
Possible options are
The option OpcUa_TimestampsToReturn_Neither = 3 is invalid for history read.