Method FindOrCreateNodeAtPath

Common/DataModel/vtkDataAssembly.cxx:712–761

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//------------------------------------------------------------------------------
int vtkDataAssembly::FindOrCreateNodeAtPath(const char* path, int parent)
{
  if (!path || !path[0])
  {
    // An empty/invalid path returns the "root" node.
    return parent;
  }

  auto it = this->Internals->NodeMap.find(parent);
  if (it == this->Internals->NodeMap.end())
  {
    return -1;
  }

  // The parent node exists.
  int node = parent;
  auto pathNames = vtksys::SystemTools::SplitString(path, '/');
  for (std::size_t ii = 0; ii < pathNames.size(); ++ii)
  {
    std::string childName = pathNames[ii];
    auto children = this->GetChildNodes(node, /*traverse_subtree*/ false, /*traversal_order*/ 0);
    bool foundChild = false;
    for (const auto& child : children)
    {
      it = this->Internals->NodeMap.find(child);
      if (it == this->Internals->NodeMap.end())
      {
        // Inconsistent node map!
        return -1;
      }
      if (it->second.name() == childName)
      {
        node = child;
        foundChild = true;
        break;
      }
    }
    if (!foundChild)
    {
      // Create all remaining entries
      for (; ii < pathNames.size(); ++ii)
      {
        childName = pathNames[ii];
        node = this->AddNode(childName.c_str(), node);
      }
      return node;
    }
  }
  return node;
}

//------------------------------------------------------------------------------
bool vtkDataAssembly::AddDataSetIndex(int id, unsigned int dataset_index)