如何从 JavaScript 中的 NEO4J 得到完整的图 JSON

Question

I see apoc.export.json.data but don't see complete working code example..

I imagine the MATCH query would enable you to get any graph:

MATCH g=(someNode)-[someRel]-() return g
CALL apoc.export.json.data( g )

Then hopefully the APOC would return JSON of all the nodes and edges in the dataset resulting from the query. Expected JSON:

{
  nodes:[
    { id:a1a1 , labels:[Something] , prop_a:99 },
    { id:a2a2 , labels:[Something] , prop_a:77 },
    { id:a3a3 , labels:[User] ,      prop_a:33 }
  ],
  edges:[
    { id:a1a1 , labels:[OWNS] , prop_a:99 },
    { id:a2a3 , labels:[OWNS] , prop_a:77 },
    { id:a4a5 , labels:[HAS] ,  prop_a:33 }
  ]
}

Answer 1

Instead of using an APOC, you can create your own output like below;

MATCH   g = ()-[]-()  
RETURN {nodes: collect(nodes(g)), 
        edges: collect(relationships(g))} as output

Sample result:

{
  "nodes": [
    [
      {
        "identity": 10,
        "labels": [
          "Person"
        ],
        "properties": {
          "name": "Om Testing"
        }
      },
      {
        "identity": 11,
        "labels": [
          "Company"
        ],
        "properties": {
          "name": "ABC"
        }
      }
    ]
  ],
  "edges": [
    [
      {
        "identity": 8,
        "start": 10,
        "end": 11,
        "type": "WORKS",
        "properties": {
          "amount": 1000
        }
      }
    ]
  ]
}