C++ Based OPC UA Client/Server SDK
1.6.5.478
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The HistoryReadProcessedContext class contains the settings for a HistoryReadProcessed call. More...
#include <uaclientsdk.h>
Public Member Functions | |
HistoryReadProcessedContext () | |
Creates a HistoryReadProcessedContext object with default settings described with the parameters. More... | |
~HistoryReadProcessedContext () | |
Destructor. | |
Public Attributes | |
OpcUa_TimestampsToReturn | timeStamps |
Indicates if the source timestamp, the server timestamp, or both should be returned. More... | |
OpcUa_Boolean | bReleaseContinuationPoints |
The flag indicates if the Service call is used to release ContinuationPoints returned from previous calls without returning additional data. More... | |
UaNodeIdArray | aggregateTypes |
The NodeIds of the aggregates used for the calculation of the values. More... | |
UaDateTime | startTime |
The start time of the requested time domain. More... | |
UaDateTime | endTime |
The end time of the requested time domain. More... | |
OpcUa_Double | processingInterval |
Time interval in milliseconds that is used to calculate one aggregated value from the raw values in the history database. More... | |
OpcUa_AggregateConfiguration | aggregateConfiguration |
The aggregateConfiguration parameter allows clients to override the Aggregate configuration settings supplied by the AggregateConfiguration object in the server on a per call basis. More... | |
The HistoryReadProcessedContext class contains the settings for a HistoryReadProcessed call.
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inline |
Creates a HistoryReadProcessedContext object with default settings described with the parameters.
OpcUa_AggregateConfiguration UaClientSdk::HistoryReadProcessedContext::aggregateConfiguration |
The aggregateConfiguration parameter allows clients to override the Aggregate configuration settings supplied by the AggregateConfiguration object in the server on a per call basis.
The default values are
UaNodeIdArray UaClientSdk::HistoryReadProcessedContext::aggregateTypes |
The NodeIds of the aggregates used for the calculation of the values.
The length of this array must match the nodesToRead array.
OpcUa_Boolean UaClientSdk::HistoryReadProcessedContext::bReleaseContinuationPoints |
The flag indicates if the Service call is used to release ContinuationPoints returned from previous calls without returning additional data.
This allows clients to free resources in the server if the client does not continue the read. The default value is false.
UaDateTime UaClientSdk::HistoryReadProcessedContext::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.
OpcUa_Double UaClientSdk::HistoryReadProcessedContext::processingInterval |
Time interval in milliseconds that is used to calculate one aggregated value from the raw values in the history database.
The time domain is divided into subintervals with the length of the ResampleInterval beginning with the start time. If the ResampleInterval is 0, one aggregated value is calculated for the time domain. The default value is 0.
UaDateTime UaClientSdk::HistoryReadProcessedContext::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::HistoryReadProcessedContext::timeStamps |
Indicates if the source timestamp, the server timestamp, or both should be returned.
The default value is Source.
Possible options are
The option OpcUa_TimestampsToReturn_Neither = 3 is invalid for history read.
The selected timestamp is also used for the selection of the values in the time domain to read. If both are selected, the source timestamp is used.