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.AtlasSchemaViolationException;
  import org.apache.atlas.repository.graphdb.AtlasVertex;
  import org.apache.atlas.repository.graphdb.AtlasVertexQuery;
  import org.apache.atlas.repository.graphdb.utils.IteratorToIterableAdapter;
  import org.apache.tinkerpop.gremlin.structure.Direction;
  import org.apache.tinkerpop.gremlin.structure.Edge;
  import org.apache.tinkerpop.gremlin.structure.Vertex;
  import org.apache.tinkerpop.gremlin.structure.VertexProperty;
  import org.janusgraph.core.JanusGraphVertex;
  import org.janusgraph.core.SchemaViolationException;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.Iterator;
  import java.util.stream.StreamSupport;
  
  /**
   * Janus implementation of AtlasVertex.
   */
  public class AtlasJanusVertex extends AtlasJanusElement<Vertex> implements AtlasVertex<AtlasJanusVertex, AtlasJanusEdge> {
      public AtlasJanusVertex(AtlasJanusGraph graph, Vertex source) {
          super(graph, source);
      }
  
      @Override
      public Iterable<AtlasEdge<AtlasJanusVertex, AtlasJanusEdge>> getEdges(AtlasEdgeDirection dir, String edgeLabel) {
          Direction      d     = AtlasJanusObjectFactory.createDirection(dir);
          Iterator<Edge> edges = getWrappedElement().edges(d, edgeLabel);
  
          return graph.wrapEdges(edges);
      }
  
      @Override
      public Iterable<AtlasEdge<AtlasJanusVertex, AtlasJanusEdge>> getEdges(AtlasEdgeDirection dir, String[] edgeLabels) {
          Direction      direction = AtlasJanusObjectFactory.createDirection(dir);
          Iterator<Edge> edges     = getWrappedElement().edges(direction, edgeLabels);
  
          return graph.wrapEdges(edges);
      }
  
      @Override
      public long getEdgesCount(AtlasEdgeDirection dir, String edgeLabel) {
          Direction                       direction = AtlasJanusObjectFactory.createDirection(dir);
          Iterator<Edge>                  it        = getWrappedElement().edges(direction, edgeLabel);
          IteratorToIterableAdapter<Edge> iterable  = new IteratorToIterableAdapter<>(it);
  
          return StreamSupport.stream(iterable.spliterator(), true).count();
      }
  
      @Override
      public boolean hasEdges(AtlasEdgeDirection dir, String edgeLabel) {
          Direction      direction = AtlasJanusObjectFactory.createDirection(dir);
          Iterator<Edge> edges     = getWrappedElement().edges(direction, edgeLabel);
  
          return edges.hasNext();
      }
  
      @Override
      public Iterable<AtlasEdge<AtlasJanusVertex, AtlasJanusEdge>> getEdges(AtlasEdgeDirection in) {
          Direction      d     = AtlasJanusObjectFactory.createDirection(in);
          Iterator<Edge> edges = getWrappedElement().edges(d);
  
          return graph.wrapEdges(edges);
      }
  
      @Override
      public <T> void addProperty(String propertyName, T value) {
          try {
              getWrappedElement().property(VertexProperty.Cardinality.set, propertyName, value);
          } catch (SchemaViolationException e) {
              throw new AtlasSchemaViolationException(e);
          }
      }
  
      @Override
      public <T> void addListProperty(String propertyName, T value) {
          try {
              getWrappedElement().property(VertexProperty.Cardinality.list, propertyName, value);
          } catch (SchemaViolationException e) {
              throw new AtlasSchemaViolationException(e);
          }
      }
  
      @Override
      public AtlasVertexQuery<AtlasJanusVertex, AtlasJanusEdge> query() {
          return new AtlasJanusVertexQuery(graph, getAsJanusVertex().query());
      }
  
      @Override
      public AtlasJanusVertex getV() {
          return this;
      }
  
      @Override
      public <T> Collection<T> getPropertyValues(String propertyName, Class<T> clazz) {
          Collection<T>               result = new ArrayList<>();
          Iterator<VertexProperty<T>> it     = getWrappedElement().properties(propertyName);
  
          while (it.hasNext()) {
              result.add(it.next().value());
          }
  
          return result;
      }
  
      private JanusGraphVertex getAsJanusVertex() {
          return (JanusGraphVertex) getWrappedElement();
      }
  }
  