Method ValidateLinkGraph

Infovis/Core/vtkTableToGraph.cxx:57–117

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//------------------------------------------------------------------------------
int vtkTableToGraph::ValidateLinkGraph()
{
  if (!this->LinkGraph)
  {
    this->LinkGraph = vtkMutableDirectedGraph::New();
  }
  if (!vtkArrayDownCast<vtkStringArray>(
        this->LinkGraph->GetVertexData()->GetAbstractArray("column")))
  {
    if (this->LinkGraph->GetNumberOfVertices() == 0)
    {
      vtkStringArray* column = vtkStringArray::New();
      column->SetName("column");
      this->LinkGraph->GetVertexData()->AddArray(column);
      column->Delete();
      this->Modified();
    }
    else
    {
      vtkErrorMacro("The link graph must contain a string array named \"column\".");
      return 0;
    }
  }
  if (!vtkArrayDownCast<vtkStringArray>(
        this->LinkGraph->GetVertexData()->GetAbstractArray("domain")))
  {
    vtkStringArray* domain = vtkStringArray::New();
    domain->SetName("domain");
    domain->SetNumberOfTuples(this->LinkGraph->GetNumberOfVertices());
    for (vtkIdType i = 0; i < this->LinkGraph->GetNumberOfVertices(); i++)
    {
      domain->SetValue(i, "");
    }
    this->LinkGraph->GetVertexData()->AddArray(domain);
    domain->Delete();
    this->Modified();
  }
  if (!vtkArrayDownCast<vtkBitArray>(this->LinkGraph->GetVertexData()->GetAbstractArray("hidden")))
  {
    vtkBitArray* hidden = vtkBitArray::New();
    hidden->SetName("hidden");
    hidden->SetNumberOfTuples(this->LinkGraph->GetNumberOfVertices());
    this->LinkGraph->GetVertexData()->AddArray(hidden);
    hidden->Delete();
    this->Modified();
  }
  if (!vtkArrayDownCast<vtkIntArray>(this->LinkGraph->GetVertexData()->GetAbstractArray("active")))
  {
    vtkIntArray* active = vtkIntArray::New();
    active->SetName("active");
    active->SetNumberOfTuples(this->LinkGraph->GetNumberOfVertices());
    for (vtkIdType i = 0; i < this->LinkGraph->GetNumberOfVertices(); ++i)
    {
      active->SetValue(i, 1);
    }
    this->LinkGraph->GetVertexData()->AddArray(active);
    active->Delete();
    this->Modified();