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struct updaterUpdateInfo {
	QString strProductName;
	QString strAbout;
	QString strVersion;
	QString strFileName;
	int nFileSize;
	int nFileId;
	QString strSHA1;
	QString strHttpLink;
};

class UpdaterUpdateData : public TModelItem<UpdaterUpdateData>{
public:
	UpdaterUpdateData(){}
	QString getProductName() { return m_updateData.strProductName; }
	void setProductName(const QString & _strProductName) { m_updateData.strProductName = _strProductName; }
	
... //то же самое для остальных членов структуры

private:
	updaterUpdateInfo m_updateData;
}

pDataModel->setProductName(strInfoList.at(0));

class GlobalModel : public QObject {
	Q_OBJECT

public:
	GlobalModel() {
		m_modelItems.resize(IModelItem::getModelItemsCount());
		memset(&m_modelItems, 0, IModelItem::getModelItemsCount());
	}

	void registerModelItem(IModelItem * _pModelItem) {
		m_modelItems[_pModelItem->getItemId()] = _pModelItem;
	}

	template<typename TItem> TItem * getModelItem() const {
		return static_cast<TItem *>(m_modelItems[TItem::ms_itemId]);
	}

private:
	std::vector<IModelItem *> m_modelItems;
};

memset(&m_modelItems[0], 0, IModelItem::getModelItemsCount()*sizeof(IModelItem *));