// SingleFileDataset.h

#ifndef dset__SingelFileDataset_H
#define dset__SingleFileDataset_H

// David Adams
// October 2004
//
// A single file daset holds a single file with implict content.
//
// GenericDataset
//   fulltype = SingleFileDataset
//   ...
//

#include "dataset_base/GenericDataset.h"

namespace dset {

class SingleFileDataset : public GenericDataset {

public:  // Typedefs.

  typedef std::string Name;

  // Function to create a single file dataset.
  typedef const Dataset* (*Creator)
    (Url furl, Name content, DatasetId parent);

public:  // Static functions.

  // Register a creator.
  // Returns 0 for success.
  static int register_creator(Name fulltype, Creator pfun);

  // Create a locked dataset from a single file.
  // Caller is responsible for management.
  // Returns 0 for error.
  static const Dataset* create(Name fulltype, Url furl,
                               Name content, DatasetId parent);

public:  // Constructors.

  // Constructor from a file.
  explicit
  SingleFileDataset(Url furl, std::string clab);

  // Constructor from a generic dataset.
  explicit SingleFileDataset(const GenericDataset& dst);

public:  // local functions

  // Return file.
  Url file() const;

};

} // end namespace dset

#endif