ExternalDatasetContext.h

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#ifndef __BUSBOY_EXTERNAL_DATASET_CONTEXT_H__
#define __BUSBOY_EXTERNAL_DATASET_CONTEXT_H__

#include "dataset/dataset_api.h"

namespace BUSBOY {

class ExternalDatasetContextImpl;

class ExternalDatasetContext : public DatasetContext {

        public:

                ExternalDatasetContext(
                        bool output,
                        const CExternalDatasetCallbacks& callbacks,
                        ExternalDatasetSerializer* serializer
                );

                DataFile* findDataFile(const DataKey& key) const;

                bool isOutput() const;

                bool isQueryOnly() const;

                void addDataFile(const DataKey& key, DataFile* file);

                std::string getDataFileName(const DataKey& key) const;

                RandomAccessFile* readFileAsRandomAccess(const DataKey& key) const;

                WritableRandomAccessFile* writeFileAsRandomAccess(const DataKey& key) const;


                ~ExternalDatasetContext();

        private:

                ExternalDatasetContextImpl* m_impl;

                // prevent calling these
                ExternalDatasetContext(const ExternalDatasetContext& context);
                ExternalDatasetContext& operator=(const ExternalDatasetContext& context);

};

}
#endif