| /* |
| * 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.map; |
| |
| 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.traversal.Path; |
| import org.apache.tinkerpop.gremlin.process.traversal.Traversal; |
| import org.apache.tinkerpop.gremlin.structure.T; |
| import org.apache.tinkerpop.gremlin.structure.Vertex; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import static org.apache.tinkerpop.gremlin.LoadGraphWith.GraphData.MODERN; |
| import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.constant; |
| import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.out; |
| import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.outE; |
| import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.values; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * @author Daniel Kuppitz (http://gremlin.guru) |
| */ |
| @RunWith(GremlinProcessRunner.class) |
| public abstract class CoalesceTest extends AbstractGremlinProcessTest { |
| |
| public abstract Traversal<Vertex, Vertex> get_g_V_coalesceXoutXfooX_outXbarXX(); |
| |
| public abstract Traversal<Vertex, String> get_g_VX1X_coalesceXoutXknowsX_outXcreatedXX_valuesXnameX(final Object v1Id); |
| |
| public abstract Traversal<Vertex, String> get_g_VX1X_coalesceXoutXcreatedX_outXknowsXX_valuesXnameX(final Object v1Id); |
| |
| public abstract Traversal<Vertex, Map<String, Long>> get_g_V_coalesceXoutXlikesX_outXknowsX_inXcreatedXX_groupCount_byXnameX(); |
| |
| public abstract Traversal<Vertex, Path> get_g_V_coalesceXoutEXknowsX_outEXcreatedXX_otherV_path_byXnameX_byXlabelX(); |
| |
| public abstract Traversal<Vertex, String> get_g_V_outXcreatedX_order_byXnameX_coalesceXname_constantXxXX(); |
| |
| @Test |
| @LoadGraphWith(MODERN) |
| public void g_V_coalesceXoutXfooX_outXbarXX() { |
| final Traversal<Vertex, Vertex> traversal = get_g_V_coalesceXoutXfooX_outXbarXX(); |
| printTraversalForm(traversal); |
| assertFalse(traversal.hasNext()); |
| } |
| |
| @Test |
| @LoadGraphWith(MODERN) |
| public void g_VX1X_coalesceXoutXknowsX_outXcreatedXX_valuesXnameX() { |
| final Traversal<Vertex, String> traversal = get_g_VX1X_coalesceXoutXknowsX_outXcreatedXX_valuesXnameX(convertToVertexId("marko")); |
| printTraversalForm(traversal); |
| checkResults(Arrays.asList("josh", "vadas"), traversal); |
| } |
| |
| @Test |
| @LoadGraphWith(MODERN) |
| public void g_VX1X_coalesceXoutXcreatedX_outXknowsXX_valuesXnameX() { |
| final Traversal<Vertex, String> traversal = get_g_VX1X_coalesceXoutXcreatedX_outXknowsXX_valuesXnameX(convertToVertexId("marko")); |
| printTraversalForm(traversal); |
| assertTrue(traversal.hasNext()); |
| assertEquals("lop", traversal.next()); |
| assertFalse(traversal.hasNext()); |
| } |
| |
| @Test |
| @LoadGraphWith(MODERN) |
| public void g_V_coalesceXoutXlikesX_outXknowsX_inXcreatedXX_groupCount_byXnameX() { |
| final Traversal<Vertex, Map<String, Long>> traversal = get_g_V_coalesceXoutXlikesX_outXknowsX_inXcreatedXX_groupCount_byXnameX(); |
| printTraversalForm(traversal); |
| assertTrue(traversal.hasNext()); |
| final Map<String, Long> result = traversal.next(); |
| assertEquals(4, result.size()); |
| assertTrue(result.containsKey("josh") && result.containsKey("lop") && result.containsKey("ripple") && result.containsKey("vadas")); |
| assertEquals(1L, (long) result.get("josh")); |
| assertEquals(2L, (long) result.get("lop")); |
| assertEquals(1L, (long) result.get("ripple")); |
| assertEquals(1L, (long) result.get("vadas")); |
| assertFalse(traversal.hasNext()); |
| } |
| |
| @Test |
| @LoadGraphWith(MODERN) |
| public void g_V_coalesceXoutEXknowsX_outEXcreatedXX_otherV_path_byXnameX_byXlabelX() { |
| final Traversal<Vertex, Path> traversal = get_g_V_coalesceXoutEXknowsX_outEXcreatedXX_otherV_path_byXnameX_byXlabelX(); |
| printTraversalForm(traversal); |
| final Map<String, Integer> first = new HashMap<>(); |
| final Map<String, Integer> last = new HashMap<>(); |
| int counter = 0; |
| while (traversal.hasNext()) { |
| counter++; |
| final Path path = traversal.next(); |
| first.compute(path.<String>get(0), (k, v) -> v != null ? v + 1 : 1); |
| last.compute(path.<String>get(2), (k, v) -> v != null ? v + 1 : 1); |
| assertEquals(3, path.size()); |
| assertTrue((path.<String>get(0).equals("marko") && path.<String>get(1).equals("knows") && path.<String>get(2).equals("vadas")) |
| || (path.<String>get(0).equals("marko") && path.<String>get(1).equals("knows") && path.<String>get(2).equals("josh")) |
| || (path.<String>get(0).equals("josh") && path.<String>get(1).equals("created") && path.<String>get(2).equals("lop")) |
| || (path.<String>get(0).equals("josh") && path.<String>get(1).equals("created") && path.<String>get(2).equals("ripple")) |
| || (path.<String>get(0).equals("peter") && path.<String>get(1).equals("created") && path.<String>get(2).equals("lop"))); |
| } |
| assertEquals(5, counter); |
| assertEquals(2, (int) first.get("marko")); |
| assertEquals(2, (int) first.get("josh")); |
| assertEquals(1, (int) first.get("peter")); |
| assertEquals(1, (int) last.get("josh")); |
| assertEquals(1, (int) last.get("vadas")); |
| assertEquals(2, (int) last.get("lop")); |
| assertEquals(1, (int) last.get("ripple")); |
| assertFalse(traversal.hasNext()); |
| } |
| |
| @Test |
| @LoadGraphWith(MODERN) |
| public void g_V_outXcreatedX_order_byXnameX_coalesceXname_constantXxXX() { |
| final Traversal<Vertex, String> traversal = get_g_V_outXcreatedX_order_byXnameX_coalesceXname_constantXxXX(); |
| printTraversalForm(traversal); |
| checkResults(Arrays.asList("lop", "lop", "lop", "ripple"), traversal); |
| } |
| |
| public static class Traversals extends CoalesceTest { |
| @Override |
| public Traversal<Vertex, Vertex> get_g_V_coalesceXoutXfooX_outXbarXX() { |
| return g.V().coalesce(out("foo"), out("bar")); |
| } |
| |
| @Override |
| public Traversal<Vertex, String> get_g_VX1X_coalesceXoutXknowsX_outXcreatedXX_valuesXnameX(final Object v1Id) { |
| return g.V(v1Id).coalesce(out("knows"), out("created")).values("name"); |
| } |
| |
| @Override |
| public Traversal<Vertex, String> get_g_VX1X_coalesceXoutXcreatedX_outXknowsXX_valuesXnameX(final Object v1Id) { |
| return g.V(v1Id).coalesce(out("created"), out("knows")).values("name"); |
| } |
| |
| @Override |
| public Traversal<Vertex, Map<String, Long>> get_g_V_coalesceXoutXlikesX_outXknowsX_inXcreatedXX_groupCount_byXnameX() { |
| return g.V().coalesce(out("likes"), out("knows"), out("created")).<String>groupCount().by("name"); |
| } |
| |
| @Override |
| public Traversal<Vertex, Path> get_g_V_coalesceXoutEXknowsX_outEXcreatedXX_otherV_path_byXnameX_byXlabelX() { |
| return g.V().coalesce(outE("knows"), outE("created")).otherV().path().by("name").by(T.label); |
| } |
| |
| @Override |
| public Traversal<Vertex, String> get_g_V_outXcreatedX_order_byXnameX_coalesceXname_constantXxXX() { |
| return g.V().out("created").order().by("name").coalesce(values("name"), constant("x")); |
| } |
| } |
| } |