Method SetNumberOfInputConnections

Common/ExecutionModel/vtkAlgorithm.cxx:1486–1517

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//------------------------------------------------------------------------------
void vtkAlgorithm::SetNumberOfInputConnections(int port, int n)
{
  // Get the consumer executive and port number.
  vtkExecutive* consumer = this->GetExecutive();
  int consumerPort = port;

  // Get the vector of connected input information objects.
  vtkInformationVector* inputs = consumer->GetInputInformation(consumerPort);

  // If the number of connections has not changed, do nothing.
  if (n == inputs->GetNumberOfInformationObjects())
  {
    return;
  }

  // Remove connections beyond the new number.
  for (int i = n; i < inputs->GetNumberOfInformationObjects(); ++i)
  {
    // Remove each input's reference to this consumer.
    if (vtkInformation* oldInfo = inputs->GetInformationObject(i))
    {
      vtkExecutive::CONSUMERS()->Remove(oldInfo, consumer, consumerPort);
    }
  }

  // Set the number of connected inputs.  Non-existing inputs will be
  // empty information objects.
  inputs->SetNumberOfInformationObjects(n);

  // This algorithm has been modified.
  this->Modified();
}

//------------------------------------------------------------------------------
vtkAlgorithmOutput* vtkAlgorithm::GetOutputPort(int port)