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

  Program:   Visualization Toolkit
  Module:    vtkMergeTables.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.

=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
// .NAME vtkMergeTables - combine two tables
//
// .SECTION Description
// Combines the columns of two tables into one larger table.
// The number of rows in the resulting table is the sum of the number of
// rows in each of the input tables.
// The number of columns in the output is generally the sum of the number
// of columns in each input table, except in the case where column names
// are duplicated in both tables.
// In this case, if MergeColumnsByName is on (the default), the two columns
// will be merged into a single column of the same name.
// If MergeColumnsByName is off, both columns will exist in the output.
// You may set the FirstTablePrefix and SecondTablePrefix to define how
// the columns named are modified.  One of these prefixes may be the empty
// string, but they must be different.

#ifndef __vtkMergeTables_h
#define __vtkMergeTables_h

#include "vtkInfovisCoreModule.h" // For export macro
#include "vtkTableAlgorithm.h"

class VTKINFOVISCORE_EXPORT vtkMergeTables : public vtkTableAlgorithm
{
public:
  static vtkMergeTables* New();
  vtkTypeMacro(vtkMergeTables,vtkTableAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // The prefix to give to same-named fields from the first table.
  // Default is "Table1.".
  vtkSetStringMacro(FirstTablePrefix);
  vtkGetStringMacro(FirstTablePrefix);

  // Description:
  // The prefix to give to same-named fields from the second table.
  // Default is "Table2.".
  vtkSetStringMacro(SecondTablePrefix);
  vtkGetStringMacro(SecondTablePrefix);

  // Description:
  // If on, merges columns with the same name.
  // If off, keeps both columns, but calls one
  // FirstTablePrefix + name, and the other SecondTablePrefix + name.
  // Default is on.
  vtkSetMacro(MergeColumnsByName, bool);
  vtkGetMacro(MergeColumnsByName, bool);
  vtkBooleanMacro(MergeColumnsByName, bool);

  // Description:
  // If on, all columns will have prefixes except merged columns.
  // If off, only unmerged columns with the same name will have prefixes.
  // Default is off.
  vtkSetMacro(PrefixAllButMerged, bool);
  vtkGetMacro(PrefixAllButMerged, bool);
  vtkBooleanMacro(PrefixAllButMerged, bool);

protected:
  vtkMergeTables();
  ~vtkMergeTables();

  bool MergeColumnsByName;
  bool PrefixAllButMerged;
  char* FirstTablePrefix;
  char* SecondTablePrefix;

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

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

#endif