/*
* 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.process.traversal.strategy.optimization;
import org.apache.tinkerpop.gremlin.process.traversal.Traversal;
import org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategies;
import org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.DefaultGraphTraversal;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__;
import org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversalStrategies;
import org.apache.tinkerpop.gremlin.process.traversal.util.EmptyTraversal;
import org.apache.tinkerpop.gremlin.structure.Element;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.apache.tinkerpop.gremlin.tinkergraph.process.traversal.step.map.TinkerCountGlobalStep;
import org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerGraph;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.out;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.select;
import static org.junit.Assert.assertEquals;
/**
* @author Marko A. Rodriguez (http://markorodriguez.com)
*/
@RunWith(Parameterized.class)
public class TinkerGraphCountStrategyTest {
@Parameterized.Parameter(value = 0)
public Traversal original;
@Parameterized.Parameter(value = 1)
public Traversal optimized;
@Parameterized.Parameter(value = 2)
public Collection<TraversalStrategy> otherStrategies;
@Test
public void doTest() {
final TraversalStrategies strategies = new DefaultTraversalStrategies();
strategies.addStrategies(TinkerGraphCountStrategy.instance());
for (final TraversalStrategy strategy : this.otherStrategies) {
strategies.addStrategies(strategy);
}
this.original.asAdmin().setStrategies(strategies);
this.original.asAdmin().applyStrategies();
assertEquals(this.optimized, this.original);
}
private static Traversal.Admin<?, ?> countStep(final Class<? extends Element> elementClass) {
return new DefaultGraphTraversal<>().addStep(new TinkerCountGlobalStep(EmptyTraversal.instance(), elementClass));
}
@Parameterized.Parameters(name = "{0}")
public static Iterable<Object[]> generateTestParameters() {
return Arrays.asList(new Object[][]{
{__.V().count(), countStep(Vertex.class), Collections.emptyList()},
{__.V().count(), countStep(Vertex.class), TraversalStrategies.GlobalCache.getStrategies(TinkerGraph.class).toList()},
{__.V().as("a").count(), countStep(Vertex.class), TraversalStrategies.GlobalCache.getStrategies(TinkerGraph.class).toList()},
{__.V().count().as("a"), countStep(Vertex.class), TraversalStrategies.GlobalCache.getStrategies(TinkerGraph.class).toList()},
{__.V().map(out()).count().as("a"), countStep(Vertex.class), TraversalStrategies.GlobalCache.getStrategies(TinkerGraph.class).toList()},
{__.V().map(out()).identity().count().as("a"), countStep(Vertex.class), TraversalStrategies.GlobalCache.getStrategies(TinkerGraph.class).toList()},
{__.V().map(out().groupCount()).identity().count().as("a"), countStep(Vertex.class), TraversalStrategies.GlobalCache.getStrategies(TinkerGraph.class).toList()},
{__.V().label().map(s -> s.get().length()).count(), countStep(Vertex.class), TraversalStrategies.GlobalCache.getStrategies(TinkerGraph.class).toList()},
{__.V().as("a").map(select("a")).count(), countStep(Vertex.class),TraversalStrategies.GlobalCache.getStrategies(TinkerGraph.class).toList()},
//
{__.V(), __.V(), Collections.emptyList()},
{__.V().out().count(), __.V().out().count(), Collections.emptyList()},
{__.V(1).count(), __.V(1).count(), Collections.emptyList()},
{__.count(), __.count(), Collections.emptyList()},
{__.V().map(out().groupCount("m")).identity().count().as("a"), __.V().map(out().groupCount("m")).identity().count().as("a"), Collections.emptyList()},
});
}
}