Method RequestData

IO/HDF/vtkHDFReader.cxx:1889–1928

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
int vtkHDFReader::RequestData(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** vtkNotUsed(inputVector), vtkInformationVector* outputVector)
{
  if (this->Stream)
  {
    this->Stream->Seek(0, vtkResourceStream::SeekDirection::Begin);
    if (!this->Impl->Open(this->Stream))
    {
      return 0;
    }
  }
  else if (!this->Impl->Open(this->FileName))
  {
    return 0;
  }

  this->CompositeCachePath.clear();
  vtkInformation* outInfo = outputVector->GetInformationObject(0);
  if (!outInfo)
  {
    this->Impl->Close();
    return 0;
  }
  vtkDataObject* output = outInfo->Get(vtkDataObject::DATA_OBJECT());
  if (!output)
  {
    this->Impl->Close();
    return 0;
  }

  bool result = ReadData(outInfo, output);

  if (this->GetHasTemporalData())
  {
    // do this at the end because using cache may override this.
    output->GetInformation()->Set(vtkDataObject::DATA_TIME_STEP(), this->TimeValue);
  }
  this->Impl->Close();
  return result ? 1 : 0;
}

//----------------------------------------------------------------------------
bool vtkHDFReader::ReadData(vtkInformation* outInfo, vtkDataObject* data)