62 lines
1.7 KiB
C++
Executable File
62 lines
1.7 KiB
C++
Executable File
/**
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* @RDE_HEADER@
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* The DataManager class is a convenience class for managing structure data
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* $Id$
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* $HeadURL$
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* $Author$
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* Created by Philipp Dassow, SLST, 2017-12-12
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*/
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#pragma once
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#include <memory>
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#include <NGLLogger/INGLLogger.h>
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#include "reply_message.h"
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namespace LtsWebSocket
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{
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/**
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* @brief The DataManager class is a convenience class for managing structure data from db
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* T needs to be of namspace::DatabaseInterface
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*/
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template<typename T>
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class DataManagerBaseDl
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{
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protected: // methods
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/**
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* @brief DataManager Constructor
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* @param dbInterface Interface for requesting db-structs data
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*/
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explicit DataManagerBaseDl(const std::shared_ptr<T> &dbInterface, NGL::INGLLogger &logger)
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: m_logger(logger)
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, m_dbInterface(dbInterface)
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{}
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/**
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* @brief toBaseDataMessageFromDb selects the DbType data from the db and converts it to JSON
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* @param uuid of the base DL request
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* @return message send to the requester
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*/
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template<typename DbType, typename MessageType>
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ReplyMessage *toBaseDataMessageFromDb(const QString &uuid) const
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{
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QVector<DbType> dataVec;
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// read all data from database
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if (!m_dbInterface->select(dataVec))
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{
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const QString errorMessage = QStringLiteral("Error reading data from database!");
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ERROR_LOG(m_logger) << errorMessage;
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ErrorMessage::ErrorData errData;
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errData.errorMessage = errorMessage;
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errData.uuid = uuid;
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return new ErrorMessage(errData);
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}
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return new MessageType (m_dbInterface->template toJson<DbType>(dataVec), uuid);
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}
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protected: // attributes
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NGL::INGLLogger &m_logger;
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std::shared_ptr<T> m_dbInterface;
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}; // class DataManagerBaseDl
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} // namespace LtsWebSocket
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