Revision control
Copy as Markdown
// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#include <private/opcuaattributecache_p.h>
#include <private/opcuaattributevalue_p.h>
QT_BEGIN_NAMESPACE
/*!
\class OpcUaAttributeCache
\inqmlmodule QtOpcUa
\brief Flexible attribute value cache providing signals.
\deprecated [6.9]
\internal
This class is just for internal use in the declarative backend and not exposed to users.
It caches node attribute values and provides access. Main purpose is to
let \l OpcUaAttributeValue provide separate value change signals for each attribute.
\sa OpcUaAttributeValue
*/
OpcUaAttributeCache::OpcUaAttributeCache(QObject *parent) : QObject(parent)
{
}
void OpcUaAttributeCache::setAttributeValue(QOpcUa::NodeAttribute attr, const QVariant &value)
{
attribute(attr)->setValue(value);
}
void OpcUaAttributeCache::invalidate()
{
// Reset all values in the cache to invalid.
// Do not clear() the cache because there are still objects with
// connections waiting for notifications
for (auto i = m_attributeCache.constBegin(); i != m_attributeCache.constEnd(); ++i)
i.value()->invalidate();
}
OpcUaAttributeValue *OpcUaAttributeCache::attribute(QOpcUa::NodeAttribute attr)
{
if (!m_attributeCache.contains(attr))
m_attributeCache.insert(attr, new OpcUaAttributeValue(this));
return m_attributeCache.value(attr);
}
const QVariant &OpcUaAttributeCache::attributeValue(QOpcUa::NodeAttribute attr)
{
return attribute(attr)->value();
}
QT_END_NAMESPACE