// GenericRepositoryOperator.h                                                                         
#ifndef GenericRepositoryOperator_H
#define GenericRepositoryOperator_H

// Vinay Sambamurthy
// Aug 2004
//
// Provides an interface for operations on two repositories such as merging and
// finding the list of inconsistent duplicates between the two repositories.    

#include "dataset_catalog/GenericRepository.h"

namespace dset {
	
class GenericRepositoryOperator {

public: // typedefs
  
  // List of objects in repository	
  typedef std::vector<std::string> ObjList;  

private: // data
  const GenericRepository &m_src;
  GenericRepository &m_dst;

public: // member functions

  // Constructor.
  GenericRepositoryOperator(const GenericRepository &rep1, GenericRepository &rep2);

  // Destructor.
  ~GenericRepositoryOperator();

  // Type check.
  bool is_valid() const; 
  
  // Copy the source repository to the destination repository. 
  // Returns 0 on success.
  int merge();

  // Return the list of IDs of inconsistent duplicates.
  GenericRepository::IdList inconsistent_duplicate_ids();

  // Return the inconsistent duplicates.
  ObjList inconsistent_duplicates();

  // Return the 2 repositories. 
  void result(GenericRepository &rep1, GenericRepository &rep2);
};

} // end namespace dset

#endif