Question about how to get all the adjacent list types of a EdgeInfo

[Sober7135]

Since EdgeInfo only provides two functions related to adjacent list.

incubator-graphar/cpp/src/graphar/graph_info.h

Line 506 in b7768ad

bool HasAdjacentListType(AdjListType adj_list_type) const;

incubator-graphar/cpp/src/graphar/graph_info.h

Lines 522 to 523 in b7768ad

	std::shared_ptr<AdjacentList> GetAdjacentList(
	AdjListType adj_list_type) const;

If we want to know what adjacent list types the edge info contains, we might write codes like this:

void example(const EdgeInfo& info) {
  if (info.HasAdjacentListType(AdjListType::ordered_by_source)) {
    // do something
  }
  if (info.HasAdjacentListType(AdjListType::ordered_by_dest)) {
    // do something
  }
  if (info.HasAdjacentListType(AdjListType::unordered_by_source)) {
    // do something
  }
  if (info.HasAdjacentListType(AdjListType::unordered_by_dest)) {
    // do something
  }
}

So i wonder if there is any other way to get adjacent list types of edge info. Or maybe we should provide a function like GetPropertyGroups to return a list of adjacent list types.

(This situation mainly occurs when reading graphar format from disk. We need to first construct GraphInfo, then VertexInfo and EdgeInfo, finally construct VerticeCollection and EdgesCollection to iterate over vertices and edges. Constructing an EdgesCollection requires knowing the adjacent list type)

If I said something incorrect, please point it out. Thanks!

[yangxk1]

Hi @Sober7135 ,Thank you for pointing out this issue. There is no function to be able to get adjacent list types in c++ library. If it's required, GAR can add this function, such as std::vector<AdjListType> getAdjacentTypes()