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             IDataProvider.h
        
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      #ifndef SCIQLOP_IDATAPROVIDER_H

      #define SCIQLOP_IDATAPROVIDER_H

      #include <memory>

      #include <QObject>

      #include <Data/SqpDateTime.h>

      class DataProviderParameters;

      class IDataSeries;

      /**

       * @brief The IDataProvider interface aims to declare a data provider.

       *

       * A data provider is an entity that generates data and returns it according to various parameters

       * (time interval, product to retrieve the data, etc.)

       *

       * @sa IDataSeries

       */

      class IDataProvider : public QObject {

          Q_OBJECT

      public:

          virtual ~IDataProvider() noexcept = default;

          virtual std::unique_ptr<IDataSeries>

          retrieveData(const DataProviderParameters &parameters) const = 0;

          virtual void requestDataLoading(const QVector<SqpDateTime> &dateTimeList) = 0;

      signals:

          void dataProvided(std::shared_ptr<IDataSeries> dateSerie, SqpDateTime dateTime);

      };

      // Required for using shared_ptr in signals/slots

      Q_DECLARE_METATYPE(std::shared_ptr<IDataProvider>)

      #endif // SCIQLOP_IDATAPROVIDER_H

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				#ifndef SCIQLOP_IDATAPROVIDER_H
				#define SCIQLOP_IDATAPROVIDER_H

				#include <memory>

				#include <QObject>

				#include <Data/SqpDateTime.h>

				class DataProviderParameters;
				class IDataSeries;

				/**
				* @brief The IDataProvider interface aims to declare a data provider.
				*
				* A data provider is an entity that generates data and returns it according to various parameters
				* (time interval, product to retrieve the data, etc.)
				*
				* @sa IDataSeries
				*/
				class IDataProvider : public QObject {

				Q_OBJECT
				public:
				virtual ~IDataProvider() noexcept = default;

				virtual std::unique_ptr<IDataSeries>
				retrieveData(const DataProviderParameters &parameters) const = 0;


				virtual void requestDataLoading(const QVector<SqpDateTime> &dateTimeList) = 0;

				signals:
				void dataProvided(std::shared_ptr<IDataSeries> dateSerie, SqpDateTime dateTime);
				};
				// Required for using shared_ptr in signals/slots
				Q_DECLARE_METATYPE(std::shared_ptr<IDataProvider>)

				#endif // SCIQLOP_IDATAPROVIDER_H