Method load

src/backend/datasources/MQTTTopic.cpp:199–306

! Loads from XML. */

  Loads from XML.
*/
bool MQTTTopic::load(XmlStreamReader* reader, bool preview) {
	removeColumns(0, columnCount());
	if (!readBasicAttributes(reader))
		return false;

	bool isFilterPrepared = false;
	QString separator;

	QString attributeWarning = i18n("Attribute '%1' missing or empty, default value is used");
	QXmlStreamAttributes attribs;
	QString str;

	while (!reader->atEnd()) {
		reader->readNext();
		if (reader->isEndElement() && reader->name() == QLatin1String("MQTTTopic"))
			break;

		if (!reader->isStartElement())
			continue;

		if (reader->name() == QLatin1String("comment")) {
			if (!readCommentElement(reader))
				return false;
		} else if (reader->name() == QLatin1String("general")) {
			attribs = reader->attributes();

			str = attribs.value(QStringLiteral("topicName")).toString();
			if (str.isEmpty())
				reader->raiseWarning(attributeWarning.arg(QStringLiteral("'topicName'")));
			else {
				m_topicName = str;
				setName(str);
			}

			str = attribs.value(QStringLiteral("filterPrepared")).toString();
			if (str.isEmpty())
				reader->raiseWarning(attributeWarning.arg(QStringLiteral("'filterPrepared'")));
			else {
				isFilterPrepared = str.toInt();
			}

			str = attribs.value(QStringLiteral("filterSeparator")).toString();
			if (str.isEmpty())
				reader->raiseWarning(attributeWarning.arg(QStringLiteral("'filterSeparator'")));
			else {
				separator = str;
			}

			int pufferSize = 0;
			str = attribs.value(QStringLiteral("messagePufferSize")).toString();
			if (str.isEmpty())
				reader->raiseWarning(attributeWarning.arg(QStringLiteral("'messagePufferSize'")));
			else
				pufferSize = str.toInt();
			for (int i = 0; i < pufferSize; ++i) {
				str = attribs.value(QStringLiteral("message") + QString::number(i)).toString();
				if (str.isEmpty())
					reader->raiseWarning(attributeWarning.arg(QStringLiteral("'message") + QString::number(i) + QLatin1Char('\'')));