/*=========================================================================

  Program:   ParaView
  Module:    $RCSfile: vtkXMLHierarchicalDataReader.h,v $

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
// .NAME vtkXMLHierarchicalDataReader - Reader for hierarchical datasets
// .SECTION Description
// vtkXMLHierarchicalDataReader reads the VTK XML hierarchical data file
// format. XML hierarchical data files are meta-files that point to a list
// of serial VTK XML files. When reading in parallel, it will distribute
// sub-blocks among processor. If the number of sub-blocks is less than
// the number of processors, some processors will not have any sub-blocks
// for that level. If the number of sub-blocks is larger than the
// number of processors, each processor will possibly have more than
// 1 sub-block.

#ifndef __vtkXMLHierarchicalDataReader_h
#define __vtkXMLHierarchicalDataReader_h

#include "vtkXMLMultiGroupDataReader.h"

class vtkHierarchicalDataSet;

class VTK_IO_EXPORT vtkXMLHierarchicalDataReader : public vtkXMLMultiGroupDataReader
{
public:
  static vtkXMLHierarchicalDataReader* New();
  vtkTypeRevisionMacro(vtkXMLHierarchicalDataReader,vtkXMLMultiGroupDataReader);
  void PrintSelf(ostream& os, vtkIndent indent);

protected:
  vtkXMLHierarchicalDataReader();
  ~vtkXMLHierarchicalDataReader();  

  // Get the name of the data set being read.
  virtual const char* GetDataSetName()
    {
    return "vtkHierarchicalDataSet";
    }

private:
  vtkXMLHierarchicalDataReader(const vtkXMLHierarchicalDataReader&);  // Not implemented.
  void operator=(const vtkXMLHierarchicalDataReader&);  // Not implemented.
};

#endif
