CODEWITHSUNDEEP
gremlin
jdogg1
jdogg1

Reputation: 21

Gremlin - search for vertex by properties of property

I have a vertex that has nested properties under a specific property. Example:

  {
    "id": "X",
    "label": "deployment",
    "type": "vertex",
    "properties": {
      "name": [
        {
          "id": "X",
          "value": "myvalue1"
        }
      ],
      "labels": [
        {
          "id": "xxxxx",
          "value": "my-labels",
          "properties": {
            "key": "value"
          }
        }
      ]
    }
  }

My problem is: I would like to search for a sub-property with a specific value. How would I construct the query to find vertices with that value? I can't seem to find any documentation on trying to find that sub-property.

Plenty of documentation on finding and sorting on a property of a vertex, but not this.

The goal of doing this, is that there are many "labels" under my labels and I want to eventually create edges among vertices with matching sub labels.

Upvotes: 2

Views: 2687

Answers (1)

Daniel Kuppitz
Daniel Kuppitz

Reputation: 10904

This will be a scan over all vertices, so be warned that it's not going to be a high-performance query.

g.V().filter(properties("my-labels").has("key", "value"))

To give you an example over The Crew graph:

//
// Where did TinkerPop crew members move in and after 2005?
//
gremlin> g = TinkerFactory.createTheCrew().traversal()
==>graphtraversalsource[tinkergraph[vertices:6 edges:14], standard]
gremlin> g.V().filter(properties("location").has("startTime", gte(2005))).
           project("name","locations").
             by("name").
             by(properties("location").has("startTime", gte(2005)).value().fold())
==>[name:marko,locations:[santa fe]]
==>[name:stephen,locations:[purcellville]]
==>[name:matthias,locations:[baltimore,oakland,seattle]]
==>[name:daniel,locations:[kaiserslautern,aachen]]

Upvotes: 1

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