QOpcUaDataValue Class

This class stores OPC UA value data and associated metadata. More...

Header: #include <QOpcUaDataValue>
CMake: find_package(Qt6 REQUIRED COMPONENTS OpcUa)
target_link_libraries(mytarget PRIVATE Qt6::OpcUa)
qmake: QT += opcua
Since: Qt 6.3

Public Functions

QOpcUaDataValue()
QOpcUaDataValue(const QOpcUaDataValue &other)
~QOpcUaDataValue()
(since 6.7) quint16 serverPicoseconds() const
QDateTime serverTimestamp() const
(since 6.7) void setServerPicoseconds(quint16 serverPicoseconds)
void setServerTimestamp(const QDateTime &serverTimestamp)
(since 6.7) void setSourcePicoseconds(quint16 sourcePicoseconds)
void setSourceTimestamp(const QDateTime &sourceTimestamp)
void setStatusCode(QOpcUa::UaStatusCode statusCode)
void setValue(const QVariant &value)
(since 6.7) quint16 sourcePicoseconds() const
QDateTime sourceTimestamp() const
QOpcUa::UaStatusCode statusCode() const
void swap(QOpcUaDataValue &other)
QVariant value() const
(since 6.7) QVariant operator QVariant() const
QOpcUaDataValue &operator=(const QOpcUaDataValue &other)
(since 6.7) bool operator!=(const QOpcUaDataValue &lhs, const QOpcUaDataValue &rhs)
(since 6.7) bool operator==(const QOpcUaDataValue &lhs, const QOpcUaDataValue &rhs)

Detailed Description

This class corresponds to the OPC UA DataValue type.

Member Function Documentation

QOpcUaDataValue::QOpcUaDataValue()

Constructs an invalid data value.

QOpcUaDataValue::QOpcUaDataValue(const QOpcUaDataValue &other)

Constructs a data value from other.

[noexcept] QOpcUaDataValue::~QOpcUaDataValue()

Destroys the data value.

[since 6.7] quint16 QOpcUaDataValue::serverPicoseconds() const

Returns the number of 10 picosecond intervals for the server timestamp.

This function was introduced in Qt 6.7.

See also setServerPicoseconds().

QDateTime QOpcUaDataValue::serverTimestamp() const

Returns the server timestamp for value().

See also setServerTimestamp().

[since 6.7] void QOpcUaDataValue::setServerPicoseconds(quint16 serverPicoseconds)

Sets the number of 10 picosecond intervals for the server timestamp to serverPicoseconds.

This function was introduced in Qt 6.7.

See also serverPicoseconds().

void QOpcUaDataValue::setServerTimestamp(const QDateTime &serverTimestamp)

Sets the server timestamp to serverTimestamp.

See also serverTimestamp().

[since 6.7] void QOpcUaDataValue::setSourcePicoseconds(quint16 sourcePicoseconds)

Sets the number of 10 picosecond intervals for the source timestamp to sourcePicoseconds.

This function was introduced in Qt 6.7.

See also sourcePicoseconds().

void QOpcUaDataValue::setSourceTimestamp(const QDateTime &sourceTimestamp)

Sets the source timestamp to sourceTimestamp.

See also sourceTimestamp().

void QOpcUaDataValue::setStatusCode(QOpcUa::UaStatusCode statusCode)

Sets the status code to statusCode.

See also statusCode().

void QOpcUaDataValue::setValue(const QVariant &value)

Sets the value to value.

If this data value is to be used with QOpcUaBinaryDataEncoding or QOpcUaGenericStructHandler, the value's type must be QOpcUaVariant.

See also value().

[since 6.7] quint16 QOpcUaDataValue::sourcePicoseconds() const

Returns the number of 10 picosecond intervals for the source timestamp.

This function was introduced in Qt 6.7.

See also setSourcePicoseconds().

QDateTime QOpcUaDataValue::sourceTimestamp() const

Returns the source timestamp for value().

See also setSourceTimestamp().

QOpcUa::UaStatusCode QOpcUaDataValue::statusCode() const

Returns the status code for this data value. If the status code is not Good, the value and the timestamps are invalid.

See also setStatusCode().

[noexcept] void QOpcUaDataValue::swap(QOpcUaDataValue &other)

Swaps this data value instance with other. This function is very fast and never fails.

QVariant QOpcUaDataValue::value() const

Returns the value.

See also setValue().

[since 6.7] QVariant QOpcUaDataValue::operator QVariant() const

Returns a QVariant containing this data value.

This function was introduced in Qt 6.7.

QOpcUaDataValue &QOpcUaDataValue::operator=(const QOpcUaDataValue &other)

Sets the values from other in this data value.

Related Non-Members

[noexcept, since 6.7] bool operator!=(const QOpcUaDataValue &lhs, const QOpcUaDataValue &rhs)

Returns true if lhs is not equal to rhs.

This function was introduced in Qt 6.7.

[noexcept, since 6.7] bool operator==(const QOpcUaDataValue &lhs, const QOpcUaDataValue &rhs)

Returns true if lhs is equal to rhs.

This function was introduced in Qt 6.7.

© 2024 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.