question

Hi @josemotta_190638,

Here is an example accessing a DSE 6.8 core graph in three different ways, all using the same driver Datastax Java driver 4.8.0.

The three different ways are:

- via CQL, select rows from a vertex table

- via String API with a string graph traversal statement

- via Fluent API with a fluent graph traversal

import com.datastax.dse.driver.api.core.graph.FluentGraphStatement;
import com.datastax.dse.driver.api.core.graph.GraphNode;
import com.datastax.dse.driver.api.core.graph.GraphResultSet;
import com.datastax.dse.driver.api.core.graph.ScriptGraphStatement;
import com.datastax.oss.driver.api.core.CqlSession;
import com.datastax.oss.driver.api.core.cql.ResultSet;
import com.datastax.oss.driver.api.core.cql.Row;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
import org.apache.tinkerpop.gremlin.structure.Vertex;

import static com.datastax.dse.driver.api.core.graph.DseGraph.g;

public class SimpleTraversal {


    public static void main(String[] args) {

        try (CqlSession session = CqlSession.builder().build()) {

            //CQL query

            String script1 =  "select * from friends.person";

            ResultSet result1 = session.execute(script1);

            for (Row row : result1) {
                System.out.println(row.getString("person_id"));

            }

            //String API

            String script2 = "g.V()";

            ScriptGraphStatement statement =
                    ScriptGraphStatement.builder(script2).build();


            GraphResultSet result2 = session.execute(statement);
            for (GraphNode node : result2) {
                System.out.println(node);

            }

            //Fluent API

            GraphTraversal<Vertex,Vertex> traversal = g.V();

            FluentGraphStatement statement2 = FluentGraphStatement.newInstance(traversal);

            GraphResultSet result3 = session.execute(statement2);
            for (GraphNode node : result3) {
                System.out.println(node);

            }

        }
    }
}

You can pass configurations to the driver by using the application.conf

In there, I have defined the basic contact point and local datacenter, as well as the graphname and traversal source g.

See here for the driver docs:

https://docs.datastax.com/en/developer/java-driver/4.8/

I hope this helps, let me know if you have further questions.