vtkSortedTableStreamer.h

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

  Program:   Visualization Toolkit
  Module:    vtkSortedTableStreamer.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.

=========================================================================*/
#ifndef vtkSortedTableStreamer_h
#define vtkSortedTableStreamer_h

#include "vtkPVVTKExtensionsFiltersRenderingModule.h" // needed for export macro
#include "vtkSmartPointer.h"                          // for vtkSmartPointer
#include "vtkTableAlgorithm.h"
#include <utility> // for std::pair

class vtkCompositeDataSet;
class vtkDataArray;
class vtkMultiProcessController;
class vtkStringArray;
class vtkTable;
class vtkUnsignedIntArray;
class vtkIdTypeArray;

class VTKPVVTKEXTENSIONSFILTERSRENDERING_EXPORT vtkSortedTableStreamer : public vtkTableAlgorithm
{
private:
  class InternalsBase;
  template <class T>
  class Internals;
  InternalsBase* Internal;

public:
  static void PrintInfo(vtkTable* input);

  static bool TestInternalClasses();
  static vtkSortedTableStreamer* New();
  vtkTypeMacro(vtkSortedTableStreamer, vtkTableAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  int FillInputPortInformation(int port, vtkInformation* info) override;


  vtkGetMacro(Block, vtkIdType);
  vtkSetMacro(Block, vtkIdType);


  vtkGetMacro(BlockSize, vtkIdType);
  vtkSetMacro(BlockSize, vtkIdType);


  vtkGetMacro(SelectedComponent, int);
  vtkSetMacro(SelectedComponent, int);


  void SetController(vtkMultiProcessController*);
  vtkGetObjectMacro(Controller, vtkMultiProcessController);

  const char* GetColumnNameToSort();

  // Update column to sort has well as invalidating the pre-processing
  void SetColumnNameToSort(const char* columnName);

  // Choose if the sorting order should be inverted or not
  void SetInvertOrder(int newValue);
  vtkGetMacro(InvertOrder, int);

protected:
  vtkSortedTableStreamer();
  ~vtkSortedTableStreamer() override;

  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;

  void CreateInternalIfNeeded(vtkTable* input, vtkDataArray* data);
  vtkDataArray* GetDataArrayToProcess(vtkTable* input);


  vtkGetStringMacro(ColumnToSort);
  vtkSetStringMacro(ColumnToSort);

  vtkIdType Block;
  vtkIdType BlockSize;
  vtkMultiProcessController* Controller;

  char* ColumnToSort;
  int SelectedComponent;
  int InvertOrder;

private:
  vtkSortedTableStreamer(const vtkSortedTableStreamer&) = delete;
  void operator=(const vtkSortedTableStreamer&) = delete;

  vtkSmartPointer<vtkTable> MergeBlocks(vtkCompositeDataSet* cd);
  vtkSmartPointer<vtkUnsignedIntArray> GenerateCompositeIndexArray(
    vtkCompositeDataSet* cd, vtkIdType maxSize);
  std::pair<vtkSmartPointer<vtkStringArray>, vtkSmartPointer<vtkIdTypeArray> >
  GenerateBlockNameArray(vtkCompositeDataSet* cd, vtkIdType maxSize);
};

#endif