This class stores the necessary information to request historic data from a server. More...
| Header: | #include <QOpcUaHistoryReadEventRequest> |
| CMake: | find_package(Qt6 REQUIRED COMPONENTS OpcUa)target_link_libraries(mytarget PRIVATE Qt6::OpcUa) |
| qmake: | QT += opcua |
| Since: | Qt 6.7 |
| QOpcUaHistoryReadEventRequest() | |
| QOpcUaHistoryReadEventRequest(const QList<QOpcUaReadItem> &nodesToRead, const QDateTime &startTimestamp, const QDateTime &endTimestamp, const QOpcUaMonitoringParameters::EventFilter &filter) | |
| QOpcUaHistoryReadEventRequest(const QOpcUaHistoryReadEventRequest &other) | |
| QOpcUaHistoryReadEventRequest(QOpcUaHistoryReadEventRequest &&other) | |
| ~QOpcUaHistoryReadEventRequest() | |
| void | addNodeToRead(const QOpcUaReadItem &nodeToRead) |
| QDateTime | endTimestamp() const |
| QOpcUaMonitoringParameters::EventFilter | filter() const |
| QList<QOpcUaReadItem> | nodesToRead() const |
| quint32 | numValuesPerNode() const |
| void | setEndTimestamp(const QDateTime &endTimestamp) |
| void | setFilter(const QOpcUaMonitoringParameters::EventFilter &filter) |
| void | setNodesToRead(const QList<QOpcUaReadItem> &nodesToRead) |
| void | setNumValuesPerNode(quint32 numValuesPerNode) |
| void | setStartTimestamp(const QDateTime &startTimestamp) |
| QDateTime | startTimestamp() const |
| void | swap(QOpcUaHistoryReadEventRequest &other) |
| QOpcUaHistoryReadEventRequest & | operator=(QOpcUaHistoryReadEventRequest &&other) |
| QOpcUaHistoryReadEventRequest & | operator=(const QOpcUaHistoryReadEventRequest &other) |
| bool | operator!=(const QOpcUaHistoryReadEventRequest &lhs, const QOpcUaHistoryReadEventRequest &rhs) |
| bool | operator==(const QOpcUaHistoryReadEventRequest &lhs, const QOpcUaHistoryReadEventRequest &rhs) |
This is the Qt OPC UA representation for the OPC UA ReadEventDetails for reading historical data defined in OPC-UA part 11, 6.4.2.
When requesting historic data from a server, several values need to be provided to the server to know which data to collect. The QOpcUaHistoryReadEventRequest class provides the required values. startTimestamp and endTimestamp define the timerange where historic events should be collected from. nodesToRead defines from which nodes historic data should be collected. numValuesPerNode defines the maximum number of events that should be returned per node. filter is the event filter used to determine which events and which of their fields to return.
Constructs an invalid QOpcUaHistoryReadEventRequest.
[explicit] QOpcUaHistoryReadEventRequest::QOpcUaHistoryReadEventRequest(const
QList<QOpcUaReadItem> &nodesToRead, const QDateTime &startTimestamp, const QDateTime &endTimestamp, const QOpcUaMonitoringParameters::EventFilter &filter)Constructs a QOpcUaHistoryReadEventRequest item with the given values.
Constructs a QOpcUaHistoryReadEventRequest item from other.
[noexcept] QOpcUaHistoryReadEventRequest::QOpcUaHistoryReadEventRequest(QOpcUaHistoryReadEventRequest &&other)Move-constructs a new read event request object from other.
Note: The moved-from object other is placed in a partially-formed state, in which the only valid operations are destruction and assignment of a new value.
[noexcept] QOpcUaHistoryReadEventRequest::~QOpcUaHistoryReadEventRequest()Destroys the request object.
Adds a node to the nodeToRead list.
Returns the end time stamp.
See also setEndTimestamp().
Returns the event filter used to retrieve historical events.
See also setFilter().
Returns the list of nodes to read.
See also setNodesToRead().
Returns the number of values per node.
See also setNumValuesPerNode().
Sets endTimestamp for the historical data to be fetched.
See also endTimestamp().
Sets the event filter used to retrieve historical events to filter.
See also filter().
Sets the nodesToRead list.
See also nodesToRead().
Sets numValuesPerNode to indicate the number of values per node to be fetched.
See also numValuesPerNode().
Sets startTimestamp for the historical data to be fetched.
See also startTimestamp().
Returns the start time stamp.
See also setStartTimestamp().
[noexcept] void QOpcUaHistoryReadEventRequest::swap(QOpcUaHistoryReadEventRequest &other)Swaps read event request object other with this read event request object. This operation is very fast and never fails.
[noexcept] QOpcUaHistoryReadEventRequest &QOpcUaHistoryReadEventRequest::operator=(QOpcUaHistoryReadEventRequest &&other)Move-assigns other to this QOpcUaHistoryReadEventRequest instance.
Note: The moved-from object other is placed in a partially-formed state, in which the only valid operations are destruction and assignment of a new value.
Sets the values from other in this QOpcUaHistoryReadEventRequest item.
[noexcept] bool operator!=(const QOpcUaHistoryReadEventRequest &lhs, const QOpcUaHistoryReadEventRequest &rhs)Returns true if lhs is not equal to rhs; otherwise returns false.
Two QOpcUaHistoryReadEventRequest items are considered not equal if their startTimestamp, endTimestamp,
numValuesPerNode, filter or nodesToRead are not equal.
[noexcept] bool operator==(const QOpcUaHistoryReadEventRequest &lhs, const QOpcUaHistoryReadEventRequest &rhs)Returns true if lhs is equal to rhs; otherwise returns false.
Two QOpcUaHistoryReadEventRequest items are considered equal if their startTimestamp, endTimestamp,
numValuesPerNode, filter and nodesToRead are equal.
