| /* |
| * 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 org.apache.tinkerpop.gremlin.tinkergraph.structure; |
| |
| import org.apache.commons.collections.IteratorUtils; |
| import org.apache.commons.configuration2.BaseConfiguration; |
| import org.apache.commons.configuration2.Configuration; |
| import org.apache.tinkerpop.gremlin.structure.Edge; |
| import org.apache.tinkerpop.gremlin.structure.Graph; |
| import org.apache.tinkerpop.gremlin.structure.Vertex; |
| |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| /** |
| * @author Cole Greer (https://github.com/Cole-Greer) |
| */ |
| public class TinkerShuffleGraph extends TinkerGraph { |
| |
| private static final Configuration EMPTY_CONFIGURATION = new BaseConfiguration() {{ |
| this.setProperty(Graph.GRAPH, TinkerShuffleGraph.class.getName()); |
| }}; |
| |
| private TinkerShuffleGraph(Configuration configuration) { |
| super(configuration); |
| } |
| |
| public static TinkerShuffleGraph open() { |
| return open(EMPTY_CONFIGURATION); |
| } |
| |
| public static TinkerShuffleGraph open(Configuration configuration) { |
| return new TinkerShuffleGraph(configuration); |
| } |
| |
| @Override |
| public Iterator<Vertex> vertices(final Object... vertexIds) { |
| return shuffleIterator(super.vertices(vertexIds)); |
| } |
| |
| @Override |
| public Iterator<Edge> edges(final Object... edgeIds) { |
| return shuffleIterator(super.edges(edgeIds)); |
| } |
| |
| @Override |
| protected TinkerVertex createTinkerVertex(final Object id, final String label, final AbstractTinkerGraph graph) { |
| return new TinkerShuffleVertex(id, label, graph); |
| } |
| |
| protected TinkerVertex createTinkerVertex(final Object id, final String label, final AbstractTinkerGraph graph, final long currentVersion) { |
| return new TinkerShuffleVertex(id, label, graph, currentVersion); |
| } |
| |
| protected TinkerEdge createTinkerEdge(final Object id, final Vertex outVertex, final String label, final Vertex inVertex) { |
| return new TinkerShuffleEdge(id, outVertex, label, inVertex); |
| } |
| |
| protected TinkerEdge createTinkerEdge(final Object id, final Vertex outVertex, final String label, final Vertex inVertex, final long currentVersion) { |
| return new TinkerShuffleEdge(id, outVertex, label, inVertex, currentVersion); |
| } |
| |
| static Iterator shuffleIterator(Iterator iter) { |
| List list = IteratorUtils.toList(iter); |
| Collections.shuffle(list); |
| return list.iterator(); |
| } |
| |
| } |