Method getIncomingEdges

packages/y-graph-storage/src/YGraphStorage.ts:197–215

(vertexId: ElementId)

  }

  public *getIncomingEdges(vertexId: ElementId): Iterable<StoredEdge> {
    const [label, uuid] = parseElementId(vertexId);
    const collection = this.getVertexCollectionMap(label);
    const data = collection.get(uuid);
    if (data == null) {
      return;
    }
    const incomingEdges = data.get($InEKey) as undefined | Y.Map<unknown>;
    if (incomingEdges == null) {
      return;
    }
    for (const edgeId of incomingEdges.keys() as IterableIterator<ElementId>) {
      const edge = this.getEdgeById(edgeId);
      if (edge == null) {
        continue;
      }
      yield edge;
    }
  }

  public *getOutgoingEdges(vertexId: ElementId): Iterable<StoredEdge> {
    const [label, uuid] = parseElementId(vertexId);