ShallowIndexRawDataReader.h

// -*- c++ -*-

#ifndef __SHALLOW_INDEX_RAW_DATA_READER_H__
#define __SHALLOW_INDEX_RAW_DATA_READER_H__

// tools
#include "tools/ToolsConfig.h"
#include "tools/AutoPtr.h"

// storage
#include "storage/DataReader.h"


class ShallowIndexRawDataReader : public DataReader {

public:

  ShallowIndexRawDataReader(Index &index);
    
  virtual ~ShallowIndexRawDataReader();
    
  virtual const RawValue::Data* find(const std::string& channel_name,
                                     const epicsTime* start);
    
  virtual const std::string& getName() const;
   
  virtual const RawValue::Data* next();
    
  virtual const RawValue::Data *get() const;
    
  virtual DbrType getType() const;
    
  virtual DbrCount getCount() const;
    
  virtual const CtrlInfo& getInfo() const;
    
  virtual bool changedType();
   
  virtual bool changedInfo();

private:

    Index& top_index;
    
    AutoPtr<Index::Result> top_result;
      
    AutoPtr<RTree::Datablock> top_datablock;
    
    AutoPtr<Index> sub_index;

    AutoPtr<Index::Result> sub_result;
    
    AutoPtr<RTree::Datablock> sub_datablock;
    
    AutoPtr<DataReader> reader;

    const RawValue::Data *find(Index &index,
                               AutoPtr<Index::Result> &index_result,
                               AutoPtr<RTree::Datablock> &datablock,
                               const stdString &channel_name,
                               const epicsTime *start);
};


#endif