OrientDB-NET - AddEdge()

This method is used to add an edge to the database. The new edge remains a part of the transaction until you commit the change and can be moved by rolling back to an earlier state.

Adding Edges

In order to add an edge to the database, you need to create an OEdge object, then call the AddEdge() method, passing to it the connecting vertices as arguments.

Syntax

OTransaction.AddEdge( OEdge edge,
             OVertex fromVertex,
             OVertex toVertex)

• edge Defines the edge object you want to add.
• fromVertex Defines the vertex the edge connects from.
• toVertex Defines the vertex th eedge connects to.

Example

In cases where you have a class that connects to multiple edges, you may find it more convenient to use a helper function to quickly define and add edges to records.

using Orient.Client;
using System;
...

// CONNECT EDGES
public void TrxConnectEdges(OTransaction trx, Dictionary<OEdge, Dictionary<string, OVertex>> edges)
{
   // LOG OPERATION
   Console.WriteLine("Adding Edges");

   // LOOP OVER EACH EDGE
   foreach(KeyValuePair<OEdge, Dictionary<string, OVertex>> edge in edges)
   {
      // DEFINE VERTICES
      OVertex from = edge.Value['from'];
      OVertex to = edge.Value['to'];

      // ADD VERTICES
      trx.AddEdge(edge.Key, from, to);
   }
}