QOpcUaReadItem Class

This class stores the options for a read operation. More...

Header:	#include <QOpcUaReadItem>
qmake:	QT += opcua

List of all members, including inherited members

Public Functions

	QOpcUaReadItem(const QString &nodeId, QOpcUa::NodeAttribute attr = QOpcUa::NodeAttribute::Value, const QString &indexRange = QString())
	QOpcUaReadItem(const QOpcUaReadItem &other)
QOpcUaReadItem &	operator=(const QOpcUaReadItem &rhs)
QOpcUa::NodeAttribute	attribute() const
QString	indexRange() const
QString	nodeId() const
void	setAttribute(QOpcUa::NodeAttribute attribute)
void	setIndexRange(const QString &indexRange)
void	setNodeId(const QString &nodeId)

Detailed Description

A read operation on an OPC UA server returns the entire value or a certain index range of the value of an attribute of a node on the server. This class contains the necessary information for the backend to make a read request to the server.

One or multiple objects of this class make up the request of a QOpcUaClient::readNodeAttributes() operation.

See also QOpcUaClient::readNodeAttributes() and QOpcUaReadResult.

Member Function Documentation

QOpcUaReadItem::QOpcUaReadItem(const QString &nodeId, QOpcUa::NodeAttribute attr = QOpcUa::NodeAttribute::Value, const QString &indexRange = QString())

Constructs a read item for the index range indexRange of the attribute attr of node nodeId.

QOpcUaReadItem::QOpcUaReadItem(const QOpcUaReadItem &other)

Constructs a read item from other.

QOpcUaReadItem &QOpcUaReadItem::operator=(const QOpcUaReadItem &rhs)

Sets the values from rhs in this read item.

QOpcUa::NodeAttribute QOpcUaReadItem::attribute() const

Returns the node attribute id.

See also setAttribute().

QString QOpcUaReadItem::indexRange() const

Returns the index range.

See also setIndexRange().

QString QOpcUaReadItem::nodeId() const

Returns the node id.

See also setNodeId().

void QOpcUaReadItem::setAttribute(QOpcUa::NodeAttribute attribute)

Sets the node attribute id to attribute.

See also attribute().

void QOpcUaReadItem::setIndexRange(const QString &indexRange)

Sets the index range to indexRange.

See also indexRange().

void QOpcUaReadItem::setNodeId(const QString &nodeId)

Sets the node id to nodeId.

See also nodeId().

© 2023 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.