content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.datastax.dse.driver.api.core.graph;
  
  import org.apache.tinkerpop.gremlin.process.remote.RemoteConnection;
  import org.apache.tinkerpop.gremlin.process.traversal.P;
  import org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategies;
  import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.DefaultGraphTraversal;
  import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
  import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource;
  import org.apache.tinkerpop.gremlin.process.traversal.step.map.GraphStep;
  import org.apache.tinkerpop.gremlin.structure.Graph;
  import org.apache.tinkerpop.gremlin.structure.Vertex;
  
  public class SocialTraversalSourceDsl extends GraphTraversalSource {
  
    public SocialTraversalSourceDsl(
        final Graph graph, final TraversalStrategies traversalStrategies) {
      super(graph, traversalStrategies);
    }
  
    public SocialTraversalSourceDsl(final Graph graph) {
      super(graph);
    }
  
    public SocialTraversalSourceDsl(RemoteConnection connection) {
      super(connection);
    }
  
    public GraphTraversal<Vertex, Vertex> persons(String... names) {
      GraphTraversalSource clone = this.clone();
  
      // Manually add a "start" step for the traversal in this case the equivalent of V(). GraphStep
      // is marked
      // as a "start" step by passing "true" in the constructor.
      clone.getBytecode().addStep(GraphTraversal.Symbols.V);
      GraphTraversal<Vertex, Vertex> traversal = new DefaultGraphTraversal<>(clone);
      traversal.asAdmin().addStep(new GraphStep(traversal.asAdmin(), Vertex.class, true));
  
      traversal = traversal.hasLabel("person");
      if (names.length > 0) traversal = traversal.has("name", P.within(names));
  
      return traversal;
    }
  }
  