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/*=========================================================================
Program: ParaView
Module: vtkXMLMultiBlockDataReader.h
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.
=========================================================================*/
/**
* @class vtkXMLMultiBlockDataReader
* @brief Reader for multi-block datasets
*
* vtkXMLMultiBlockDataReader reads the VTK XML multi-block data file
* format. XML multi-block 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 block. If the number of sub-blocks is larger than the
* number of processors, each processor will possibly have more than
* 1 sub-block.
*/
#ifndef vtkXMLMultiBlockDataReader_h
#define vtkXMLMultiBlockDataReader_h
#include "vtkIOXMLModule.h" // For export macro
#include "vtkXMLCompositeDataReader.h"
class vtkMultiBlockDataSet;
class VTKIOXML_EXPORT vtkXMLMultiBlockDataReader : public vtkXMLCompositeDataReader
{
public:
static vtkXMLMultiBlockDataReader* New();
vtkTypeMacro(vtkXMLMultiBlockDataReader, vtkXMLCompositeDataReader);
void PrintSelf(ostream& os, vtkIndent indent) override;
protected:
vtkXMLMultiBlockDataReader();
~vtkXMLMultiBlockDataReader() override;
// Read the XML element for the subtree of a the composite dataset.
// dataSetIndex is used to rank the leaf nodes in an inorder traversal.
void ReadComposite(vtkXMLDataElement* element, vtkCompositeDataSet* composite,
const char* filePath, unsigned int& dataSetIndex) override;
// Reads file version < 1.0.
virtual void ReadVersion0(vtkXMLDataElement* element, vtkCompositeDataSet* composite,
const char* filePath, unsigned int& dataSetIndex);
// Get the name of the data set being read.
const char* GetDataSetName() override;
int FillOutputPortInformation(int, vtkInformation* info) override;
int RequestInformation(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
virtual int FillMetaData(vtkCompositeDataSet* metadata, vtkXMLDataElement* element,
const std::string& filePath, unsigned int& dataSetIndex);
private:
vtkXMLMultiBlockDataReader(const vtkXMLMultiBlockDataReader&) = delete;
void operator=(const vtkXMLMultiBlockDataReader&) = delete;
};
#endif