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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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 org.apache.atlas.repository.graphdb.janus;
  
  import org.apache.atlas.repository.graphdb.AtlasEdge;
  import org.apache.atlas.repository.graphdb.AtlasEdgeDirection;
  import org.apache.atlas.repository.graphdb.AtlasVertex;
  import org.apache.atlas.repository.graphdb.AtlasVertexQuery;
  import org.apache.tinkerpop.gremlin.structure.Edge;
  import org.apache.tinkerpop.gremlin.structure.Vertex;
  import org.janusgraph.core.JanusGraphVertexQuery;
  
  import static com.google.common.base.Preconditions.checkArgument;
  
  /**
   * Janus implementation of AtlasVertexQuery.
   */
  public class AtlasJanusVertexQuery implements AtlasVertexQuery<AtlasJanusVertex, AtlasJanusEdge> {
      private final AtlasJanusGraph          graph;
      private final JanusGraphVertexQuery<?> query;
  
      public AtlasJanusVertexQuery(AtlasJanusGraph graph, JanusGraphVertexQuery<?> query) {
          this.query = query;
          this.graph = graph;
      }
  
      @Override
      public AtlasVertexQuery<AtlasJanusVertex, AtlasJanusEdge> direction(AtlasEdgeDirection queryDirection) {
          query.direction(AtlasJanusObjectFactory.createDirection(queryDirection));
  
          return this;
      }
  
      @Override
      public Iterable<AtlasVertex<AtlasJanusVertex, AtlasJanusEdge>> vertices() {
          Iterable<? extends Vertex> vertices = query.vertices();
  
          return graph.wrapVertices(vertices);
      }
  
      @Override
      public Iterable<AtlasVertex<AtlasJanusVertex, AtlasJanusEdge>> vertices(int limit) {
          checkArgument(limit >= 0, "Limit should be greater than or equals to 0");
  
          Iterable<? extends Vertex> vertices = query.limit(limit).vertices();
  
          return graph.wrapVertices(vertices);
      }
  
      @Override
      public Iterable<AtlasEdge<AtlasJanusVertex, AtlasJanusEdge>> edges() {
          Iterable<? extends Edge> edges = query.edges();
  
          return graph.wrapEdges(edges);
      }
  
      @Override
      public Iterable<AtlasEdge<AtlasJanusVertex, AtlasJanusEdge>> edges(int limit) {
          checkArgument(limit >= 0, "Limit should be greater than or equals to 0");
  
          Iterable<? extends Edge> edges = query.limit(limit).edges();
  
          return graph.wrapEdges(edges);
      }
  
      @Override
      public long count() {
          return query.count();
      }
  
      @Override
      public AtlasVertexQuery<AtlasJanusVertex, AtlasJanusEdge> label(String label) {
          query.labels(label);
  
          return this;
      }
  
      @Override
      public AtlasVertexQuery<AtlasJanusVertex, AtlasJanusEdge> has(String key, Object value) {
          query.has(key, value);
  
          return this;
      }
  }
  