Graph is not showing in AGE Viewer for Edges

Question

I am connecting the instance of AGE running on WSL to AGE Viewer running on Window. It is working fine. When I run query:

SELECT *
FROM cypher('university', $$
        MATCH (v)
        RETURN v
$$) as (v agtype);

It works fine and show all the nodes in the university Graph in both Table and Graph View. But when I run:

SELECT *
FROM cypher('university', $$
        MATCH ()-[e]->()
        RETURN e
$$) as (v agtype);

It shows result in only Table View and Graph View shows nothing. How can I solve this issue?

Graph View:

Table View:

AGE Viewer can't draw edges without its start node and end node — Mohayu Din, May 18 '23 at 08:05

score 1 · Accepted Answer · answered May 18 '23 at 08:24

The issue can be resolved with the below code and to see the relationship in the graph view, a modification in query is needed to include the connected nodes. This is how to retrieve it:

 SELECT *
FROM cypher('university', $$
        MATCH (n1)-[e]->(n2)
        RETURN n1, e, n2
$$) as (n1 agtype, e agtype, n2 agtype);

score -1 · Answer 2 · answered May 18 '23 at 11:20

-1

Because in the second query you want to return the edges only with out their associated vertices and Apache AGE Viewer will not be able to draw the edges without their associated vertices.

So you can modify your query to return the edges and vertices like the following :

SELECT *
FROM cypher('university', $$
        MATCH (v1)-[e]->(v2)
        RETURN v1,e,v2
$$) as (v1 agtype, e agtype, v2 agtype);

answered May 18 '23 at 11:20

Omar Saad

349
3
8

This looks nearly identical to the other answer – DavidW May 18 '23 at 12:27

Graph is not showing in AGE Viewer for Edges

2 Answers2