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/*=========================================================================
Program: Visualization Toolkit
Module: VTXSchemaManager.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.
=========================================================================*/
/*
* VTXSchemaManager.h : reusable class that manages a reader that
* is a derived type of VTXSchema
*
* Created on: May 31, 2019
* Author: William F Godoy godoywf@ornl.gov
*/
#ifndef VTK_IO_ADIOS2_VTX_VTXSchemaManager_H_
#define VTK_IO_ADIOS2_VTX_VTXSchemaManager_H_
#include <memory>
#include <set>
#include <string>
#include "vtkMultiBlockDataSet.h"
#include "schema/VTXSchema.h"
#include <adios2.h>
namespace vtx
{
VTK_ABI_NAMESPACE_BEGIN
class VTXSchemaManager
{
public:
/** current time*/
double Time = 0.;
/** current adios2 step */
size_t Step = 0;
/** managed polymorphic reader, could be extended in a container */
std::unique_ptr<VTXSchema> Reader;
VTXSchemaManager() = default;
~VTXSchemaManager() = default;
/**
* Updates metadata if stream is changed
* @param streamName input current stream name
* @param step input current step
* @param schemaName schema name to look for either as attribute or separate
* file
*/
void Update(const std::string& streamName, const size_t step = 0,
const std::string& schemaName = "vtk.xml");
/**
* Fill multiblock data
* @param multiblock output structure to be filled by m_Reader
* @param step input data for one step at a time
*/
void Fill(vtkMultiBlockDataSet* multiblock, const size_t step = 0);
private:
/** Current stream name */
std::string StreamName;
/** Single ADIOS object alive during the entire run */
std::unique_ptr<adios2::ADIOS> ADIOS;
/** Current ADIOS2 IO used for getting variables */
adios2::IO IO;
/** Current ADIOS2 Engine doing the heavy work */
adios2::Engine Engine;
/** carries the schema information */
std::string SchemaName;
static const std::set<std::string> SupportedTypes;
/** we can extend this to add more schemas */
void InitReader();
/** Called within InitReader */
bool InitReaderXMLVTK();
};
VTK_ABI_NAMESPACE_END
} // end namespace adios2vtk
#endif /* VTK_IO_ADIOS2_VTX_VTXSchemaManager_h */
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