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.tinkerpop.query;
  
  import org.apache.atlas.repository.graphdb.AtlasEdge;
  import org.apache.atlas.repository.graphdb.AtlasGraphQuery;
  import org.apache.atlas.repository.graphdb.AtlasGraphQuery.QueryOperator;
  import org.apache.atlas.repository.graphdb.AtlasVertex;
  
  import java.util.Collection;
  
  /**
   * Interfaces that provides a thin wrapper around GraphQuery (used by Titan0) and
   * TitanGraphQuery (used by Titan 1).
   *
   * This abstraction  allows TitanGraphQuery to work on any version of Titan.
   *
   * @param <V>
   * @param <E>
   */
  public interface NativeTinkerpopGraphQuery<V, E> {
      /**
       * Executes the graph query.
       * @return
       */
      Iterable<AtlasVertex<V, E>> vertices();
  
      /**
       * Executes the graph query.
       * @return
       */
      Iterable<AtlasEdge<V, E>> edges();
  
      /**
       * Executes graph query
       * @param limit Max edges to return
       * @return
       */
      Iterable<AtlasEdge<V, E>> edges(int limit);
  
      /**
       * Executes graph query
       * @param offset Starting offset
       * @param limit Max edges to return
       * @return
       */
      Iterable<AtlasEdge<V, E>> edges(int offset, int limit);
  
      /**
       * Executes graph query
       * @param limit Max vertices to return
       * @return
       */
      Iterable<AtlasVertex<V, E>> vertices(int limit);
  
      /**
       * Executes graph query
       * @param offset Starting offset
       * @param limit Max vertices to return
       * @return
       */
      Iterable<AtlasVertex<V, E>> vertices(int offset, int limit);
  
      /**
       * Executes the graph query.
       * @return
       */
      Iterable<Object> vertexIds();
  
      /**
       * Executes graph query
       * @param limit Max vertices to return
       * @return
       */
      Iterable<Object> vertexIds(int limit);
  
      /**
       * Executes graph query
       * @param offset Starting offset
       * @param limit Max vertices to return
       * @return
       */
      Iterable<Object> vertexIds(int offset, int limit);
  
      /**
       * Adds an in condition to the query.
       *
       * @param propertyName
       * @param values
       */
      void in(String propertyName, Collection<?> values);
  
      /**
       * Adds a has condition to the query.
       *
       * @param propertyName
       * @param op
       * @param value
       */
      void has(String propertyName, QueryOperator op, Object value);
  
      /**
       * Add sort predicate for give property
       * @param propertyName
       * @param sortOrder
       */
      void orderBy(String propertyName, AtlasGraphQuery.SortOrder sortOrder);
  }
  