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

  Program:   Visualization Toolkit
  Module:    vtkPExtractArraysOverTime.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm 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.

=========================================================================*/
/**
 * @class   vtkPExtractArraysOverTime
 * @brief   extract point or cell data over time (parallel)
 *
 * vtkPExtractArraysOverTime is a parallelized version of
 * vtkExtractArraysOverTime.
 * vtkExtractArraysOverTime extract point or cell data given a selection. For
 * every cell or point extracted, vtkExtractArraysOverTime create a vtkTable
 * that is placed in an appropriately named block in an output multi-block
 * dataset. For global-id based selections or location based selections, it's
 * possible that over time the cell/point moves across processes. This filter
 * ensures that such extractions spread across processes are combined correctly
 * into a single vtkTable.
 * This filter produces a valid output on the root node alone, all other nodes,
 * simply have empty multi-block dataset with number of blocks matching the root
 * (to ensure that all processes have the same structure).
 * @sa
 * vtkExtractArraysOverTime
*/

#ifndef vtkPExtractArraysOverTime_h
#define vtkPExtractArraysOverTime_h

#include "vtkFiltersParallelModule.h" // For export macro
#include "vtkExtractArraysOverTime.h"

class vtkMultiProcessController;
class vtkTable;

class VTKFILTERSPARALLEL_EXPORT vtkPExtractArraysOverTime : public vtkExtractArraysOverTime
{
public:
  static vtkPExtractArraysOverTime *New();
  vtkTypeMacro(vtkPExtractArraysOverTime,vtkExtractArraysOverTime);
  void PrintSelf(ostream& os, vtkIndent indent);

  //@{
  /**
   * Set and get the controller.
   */
  virtual void SetController(vtkMultiProcessController*);
  vtkGetObjectMacro(Controller, vtkMultiProcessController);
  //@}

  enum Tags
  {
    EXCHANGE_DATA = 1972
  };

protected:
  vtkPExtractArraysOverTime();
  ~vtkPExtractArraysOverTime();

  virtual void PostExecute(vtkInformation* request,
                           vtkInformationVector** inputVector,
                           vtkInformationVector* outputVector);
  void AddRemoteData(vtkMultiBlockDataSet* routput,
                     vtkMultiBlockDataSet* output);
  void MergeTables(vtkTable* routput, vtkTable* output);

  vtkMultiProcessController* Controller;

private:
  vtkPExtractArraysOverTime(const vtkPExtractArraysOverTime&) VTK_DELETE_FUNCTION;
  void operator=(const vtkPExtractArraysOverTime&) VTK_DELETE_FUNCTION;
};

#endif