| /* |
| * 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.process.traversal.step.branch; |
| |
| import org.apache.tinkerpop.gremlin.LoadGraphWith; |
| import org.apache.tinkerpop.gremlin.process.AbstractGremlinProcessTest; |
| import org.apache.tinkerpop.gremlin.process.GremlinProcessRunner; |
| import org.apache.tinkerpop.gremlin.process.IgnoreEngine; |
| import org.apache.tinkerpop.gremlin.process.traversal.Path; |
| import org.apache.tinkerpop.gremlin.process.traversal.Traversal; |
| import org.apache.tinkerpop.gremlin.process.traversal.TraversalEngine; |
| import org.apache.tinkerpop.gremlin.structure.Vertex; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.function.Predicate; |
| |
| import static org.apache.tinkerpop.gremlin.LoadGraphWith.GraphData.MODERN; |
| import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.in; |
| import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.out; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * @author Pieter Martin |
| */ |
| @RunWith(GremlinProcessRunner.class) |
| public abstract class OptionalTest extends AbstractGremlinProcessTest { |
| |
| public abstract Traversal<Vertex, Vertex> get_g_VX2X_optionalXoutXknowsXX(Object v2Id); |
| |
| public abstract Traversal<Vertex, Vertex> get_g_VX2X_optionalXinXknowsXX(Object v2Id); |
| |
| public abstract Traversal<Vertex, Path> get_g_V_hasLabelXpersonX_optionalXoutXknowsX_optionalXoutXcreatedXXX_path(); |
| |
| public abstract Traversal<Vertex, Path> get_g_V_optionalXout_optionalXoutXX_path(); |
| |
| @Test |
| @LoadGraphWith(MODERN) |
| public void g_VX2X_optionalXoutXknowsXX() { |
| final Traversal<Vertex, Vertex> traversal = get_g_VX2X_optionalXoutXknowsXX(convertToVertexId(this.graph, "vadas")); |
| printTraversalForm(traversal); |
| assertTrue(traversal.hasNext()); |
| assertEquals(convertToVertex(this.graph, "vadas"), traversal.next()); |
| } |
| |
| @Test |
| @LoadGraphWith(MODERN) |
| public void g_VX2X_optionalXinXknowsXX() { |
| final Traversal<Vertex, Vertex> traversal = get_g_VX2X_optionalXinXknowsXX(convertToVertexId(this.graph, "vadas")); |
| printTraversalForm(traversal); |
| assertTrue(traversal.hasNext()); |
| assertEquals(convertToVertex(this.graph, "marko"), traversal.next()); |
| } |
| |
| @Test |
| @LoadGraphWith(MODERN) |
| public void g_V_hasLabelXpersonX_optionalXoutXknowsX_optionalXoutXcreatedXXX_path() { |
| final Traversal<Vertex, Path> traversal = get_g_V_hasLabelXpersonX_optionalXoutXknowsX_optionalXoutXcreatedXXX_path(); |
| printTraversalForm(traversal); |
| List<Path> paths = traversal.toList(); |
| assertEquals(6, paths.size()); |
| List<Predicate<Path>> pathsToAssert = Arrays.asList( |
| p -> p.size() == 2 && p.get(0).equals(convertToVertex(this.graph, "marko")) && p.get(1).equals(convertToVertex(this.graph, "vadas")), |
| p -> p.size() == 3 && p.get(0).equals(convertToVertex(this.graph, "marko")) && p.get(1).equals(convertToVertex(this.graph, "josh")) && p.get(2).equals(convertToVertex(this.graph, "ripple")), |
| p -> p.size() == 3 && p.get(0).equals(convertToVertex(this.graph, "marko")) && p.get(1).equals(convertToVertex(this.graph, "josh")) && p.get(2).equals(convertToVertex(this.graph, "lop")), |
| p -> p.size() == 1 && p.get(0).equals(convertToVertex(this.graph, "vadas")), |
| p -> p.size() == 1 && p.get(0).equals(convertToVertex(this.graph, "josh")), |
| p -> p.size() == 1 && p.get(0).equals(convertToVertex(this.graph, "peter")) |
| ); |
| for (Predicate<Path> pathPredicate : pathsToAssert) { |
| Optional<Path> path = paths.stream().filter(pathPredicate).findAny(); |
| assertTrue(path.isPresent()); |
| assertTrue(paths.remove(path.get())); |
| } |
| assertTrue(paths.isEmpty()); |
| } |
| |
| @Test |
| @LoadGraphWith(MODERN) |
| public void g_V_optionalXout_optionalXoutXX_path() { |
| final Traversal<Vertex, Path> traversal = get_g_V_optionalXout_optionalXoutXX_path(); |
| printTraversalForm(traversal); |
| List<Path> paths = traversal.toList(); |
| assertEquals(10, paths.size()); |
| List<Predicate<Path>> pathsToAssert = Arrays.asList( |
| p -> p.size() == 2 && p.get(0).equals(convertToVertex(this.graph, "marko")) && p.get(1).equals(convertToVertex(this.graph, "lop")), |
| p -> p.size() == 2 && p.get(0).equals(convertToVertex(this.graph, "marko")) && p.get(1).equals(convertToVertex(this.graph, "vadas")), |
| p -> p.size() == 3 && p.get(0).equals(convertToVertex(this.graph, "marko")) && p.get(1).equals(convertToVertex(this.graph, "josh")) && p.get(2).equals(convertToVertex(this.graph, "lop")), |
| p -> p.size() == 3 && p.get(0).equals(convertToVertex(this.graph, "marko")) && p.get(1).equals(convertToVertex(this.graph, "josh")) && p.get(2).equals(convertToVertex(this.graph, "ripple")), |
| p -> p.size() == 1 && p.get(0).equals(convertToVertex(this.graph, "vadas")), |
| p -> p.size() == 1 && p.get(0).equals(convertToVertex(this.graph, "lop")), |
| p -> p.size() == 2 && p.get(0).equals(convertToVertex(this.graph, "josh")) && p.get(1).equals(convertToVertex(this.graph, "lop")), |
| p -> p.size() == 2 && p.get(0).equals(convertToVertex(this.graph, "josh")) && p.get(1).equals(convertToVertex(this.graph, "ripple")), |
| p -> p.size() == 1 && p.get(0).equals(convertToVertex(this.graph, "ripple")), |
| p -> p.size() == 2 && p.get(0).equals(convertToVertex(this.graph, "peter")) && p.get(1).equals(convertToVertex(this.graph, "lop")) |
| ); |
| for (Predicate<Path> pathPredicate : pathsToAssert) { |
| Optional<Path> path = paths.stream().filter(pathPredicate).findAny(); |
| assertTrue(path.isPresent()); |
| assertTrue(paths.remove(path.get())); |
| } |
| assertTrue(paths.isEmpty()); |
| } |
| |
| public static class Traversals extends OptionalTest { |
| |
| @Override |
| public Traversal<Vertex, Vertex> get_g_VX2X_optionalXoutXknowsXX(Object v2Id) { |
| return this.g.V(v2Id).optional(out("knows")); |
| } |
| |
| @Override |
| public Traversal<Vertex, Vertex> get_g_VX2X_optionalXinXknowsXX(Object v2Id) { |
| return this.g.V(v2Id).optional(in("knows")); |
| } |
| |
| @Override |
| public Traversal<Vertex, Path> get_g_V_hasLabelXpersonX_optionalXoutXknowsX_optionalXoutXcreatedXXX_path() { |
| return this.g.V().hasLabel("person").optional(out("knows").optional(out("created"))).path(); |
| } |
| |
| @Override |
| public Traversal<Vertex, Path> get_g_V_optionalXout_optionalXoutXX_path() { |
| return this.g.V().optional(out().optional(out())).path(); |
| } |
| |
| } |
| } |