Provide a way to parse edges information

Issues Dgraph
, , ,
1

Moved from GitHub dgraph/4023

Posted by Charrette:

A typical output of the following command

{
  get(func: uid(0x1)) {
    uid
    expand(_all_) {
      uid
    }
  }
}

is:

  "data": {
    "get": [
      {
        "uid": "0x1",
        "friend": [
          {
            "uid": "0x2",
            "friend|my-facet": "foo"
          },
          {
            "uid": "0x3",
            "friend|my-facet": "bar"
          }
        ],
        "colleague": [
          {
            "uid": "0x4",
            "colleague|my-facet": "foo"
          }
        ]
      }
    ]
  }

This kind of json structure is ok when you know in advance the types you’re getting, then you can unmarshal the result in a struct such as:

type Data struct {
	Get []struct {
		UID       string              `json:"uid"`
		Friend    []map[string]string `json:"friend"`
		Colleague []map[string]string `json:"colleague"`
	} `json:"get"`
}

But the struggle begins when you have dynamic edges and you don’t know all the existing edges type in your database in advance. In that case you’d prefer have a map of edges for instance.

Taking advantage of github.com/Jeffail/gabs I built my own helper to deal with it more dynamically.

I was wondering if this is something we could implement directly in dgo, and I’d be glad to open a PR if so

2

mangalaman93 commented :

type Data struct {
	Get []map[string][]map[string]string `json:"get"`
}

Could you use the type above?