Creating vertices and edges in DataStax Studio

Steps to add Gremlin code to a notebook to create a simple two vertex, one edge graph.

1. If necessary, start DataStax Studio and open the notebook you previously created.

When you create a notebook, an empty graph instance is created and named after the value in the graph name field in the notebook's connection. A local variable, g, is defined automatically and bound to that graph.

2. Add a cell to the notebook.
3. Ensure that Gremlin is selected in the menu for the notebook cell editor mode:
4. Add the code to the cell to create some vertices and edges for the graph.

   schema.config().option('graph.schema_mode').set('Development')
   
   Vertex firstVertex = graph.addVertex(label, 'user', 'id', 1, 'name', 'Jo Dowe', 'role', 'customer')
   Vertex secondVertex = graph.addVertex(label,'product', 'id', 2, 'name', 'fountain pen')
   firstVertex.addEdge('bought', secondVertex)
   g.V()
   

   These lines of code, put DSE Graph in development mode, create two vertices, and connect them with a single edge.

5. Select Run Cell to execute the code.
6. Select Graph in Display toolbar. (By default, the Table view is displayed.)

   

7. Hover your mouse over a vertex to display its properties.