/*
* 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.
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package org.apache.tinkerpop.gremlin.process.traversal.strategy.optimization;
import org.apache.tinkerpop.gremlin.process.traversal.P;
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.__;
import org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversalStrategies;
import org.apache.tinkerpop.gremlin.structure.Graph;
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 java.util.function.Predicate;
import static org.apache.tinkerpop.gremlin.process.traversal.P.eq;
import static org.apache.tinkerpop.gremlin.process.traversal.P.neq;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.filter;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.has;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.in;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.inE;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.not;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.or;
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.__.properties;
import static org.junit.Assert.assertEquals;
/**
* @author Marko A. Rodriguez (http://markorodriguez.com)
*/
@RunWith(Parameterized.class)
public class FilterRankingStrategyTest {
public static Iterable<Object[]> data() {
return generateTestParameters();
}
@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(FilterRankingStrategy.instance());
for (final TraversalStrategy strategy : this.otherStrategies) {
strategies.addStrategies(strategy);
}
this.original.asAdmin().setStrategies(strategies);
this.original.asAdmin().applyStrategies();
assertEquals(this.optimized, this.original);
}
@Parameterized.Parameters(name = "{0}")
public static Iterable<Object[]> generateTestParameters() {
final Predicate testP = t -> true;
return Arrays.asList(new Object[][]{
{__.dedup().order(), __.dedup().order(), Collections.emptyList()},
{__.has("name", "marko").as("a").out().as("b").has("age", 32).where("a", neq("b")).as("c").out(), __.has("name", "marko").as("a").out().has("age", 32).as("b").where("a", neq("b")).as("c").out(), Collections.emptyList()},
{__.has("name", "marko").as("a").out().has("age", 32).as("b").where("a", neq("b")), __.has("name", "marko").as("a").out().has("age", 32).as("b").where("a", neq("b")), Collections.emptyList()},
{__.has("name", "marko").has("age", 32).dedup().has("name", "bob").as("a"), __.has("name", "marko").has("age", 32).has("name", "bob").dedup().as("a"), Collections.singletonList(InlineFilterStrategy.instance())},
{__.has("name", "marko").dedup().as("a").has("age", 32).has("name", "bob").as("b"), __.has("name", "marko").has("age", 32).has("name", "bob").dedup().as("b", "a"), Collections.singletonList(InlineFilterStrategy.instance())},
{__.where("b", eq("c")).as("a").dedup("a").has("name", "marko"), __.has("name", "marko").where("b", eq("c")).as("a").dedup("a"), Collections.emptyList()},
{__.where("b", eq("c")).has("name", "bob").as("a").dedup("a").has("name", "marko"), __.has("name", "bob").has("name", "marko").where("b", eq("c")).as("a").dedup("a"), Collections.singletonList(InlineFilterStrategy.instance())},
{__.has("name", "marko").as("a").out().has("name", "bob").dedup().as("b").where(__.as("a").out().as("b")), __.has("name", "marko").as("a").out().has("name", "bob").dedup().as("b").where(__.as("a").out().as("b")), Collections.singletonList(InlineFilterStrategy.instance())},
{__.has("name", "marko").as("a").out().has("name", "bob").as("b").dedup().where(__.as("a").out().as("b")), __.has("name", "marko").as("a").out().has("name", "bob").dedup().as("b").where(__.as("a").out().as("b")), Collections.singletonList(InlineFilterStrategy.instance())},
{__.has("name", "marko").as("a").out().has("name", "bob").dedup().as("c").where(__.as("a").out().as("b")), __.has("name", "marko").as("a").out().has("name", "bob").where(__.as("a").out().as("b")).dedup().as("c"), Collections.singletonList(InlineFilterStrategy.instance())},
{__.order().dedup(), __.dedup().order(), Collections.emptyList()},
{__.order().filter(testP).dedup(), __.order().filter(testP).dedup(), Collections.emptyList()},
{__.order().as("a").dedup(), __.dedup().order().as("a"), Collections.emptyList()},
{__.order().as("a").dedup("a"), __.order().as("a").dedup("a"), Collections.emptyList()},
{__.order().as("a").dedup("a").has("name", "marko"), __.has("name", "marko").as("a").dedup("a").order(), Collections.emptyList()},
{__.order().as("a").dedup("a").has("name", "marko").out(), __.has("name", "marko").as("a").dedup("a").order().out(), Collections.emptyList()},
{__.order().as("a").dedup("a").has("name", "marko").where("a", eq("b")).out(), __.has("name", "marko").as("a").where("a", eq("b")).dedup("a").order().out(), Collections.emptyList()},
{__.identity().order().dedup(), __.dedup().order(), Collections.singletonList(IdentityRemovalStrategy.instance())},
{__.order().identity().dedup(), __.dedup().order(), Collections.singletonList(IdentityRemovalStrategy.instance())},
{__.order().out().dedup(), __.order().out().dedup(), Collections.emptyList()},
{has("value", 0).filter(out()).dedup(), has("value", 0).filter(out()).dedup(), Collections.emptyList()},
{__.dedup().has("value", 0).or(not(has("age")), has("age", 10)).has("value", 1), __.has("value", 0).has("value", 1).or(not(has("age")), has("age", 10)).dedup(), Collections.singletonList(InlineFilterStrategy.instance())},
{__.dedup().filter(out()).has("value", 0), has("value", 0).filter(out()).dedup(), Collections.emptyList()},
{filter(out()).dedup().has("value", 0), has("value", 0).filter(out()).dedup(), Collections.emptyList()},
{__.as("a").out().has("age").where(P.eq("a")), __.as("a").out().where(P.eq("a")).has("age"), Collections.emptyList()},
{__.as("a").out().has("age").where(P.eq("a")).by("age"), __.as("a").out().has("age").where(P.eq("a")).by("age"), Collections.emptyList()},
{__.as("a").out().and(has("age"), has("name")).where(P.eq("a")).by("age"), __.as("a").out().and(has("age"), has("name")).where(P.eq("a")).by("age"), Collections.emptyList()},
{__.as("a").out().and(has("age"), has("name")).where(P.eq("a")), __.as("a").out().where(P.eq("a")).and(has("age"), has("name")), Collections.emptyList()},
{__.as("a").out().and(has("age"), has("name")).where(P.eq("a")).by("age"), __.as("a").out().has("age").has("name").where(P.eq("a")).by("age"), Collections.singletonList(InlineFilterStrategy.instance())},
{__.as("a").out().and(has("age"), has("name")).where(P.eq("a")), __.as("a").out().where(P.eq("a")).has("age").has("name"), Collections.singletonList(InlineFilterStrategy.instance())},
{__.as("a").out().and(has("age"), has("name")).filter(__.where(P.eq("a"))), __.as("a").out().where(P.eq("a")).has("age").has("name"), Collections.singletonList(InlineFilterStrategy.instance())},
{__.as("a").out().and(has("age"), has("name")).filter(__.where(P.eq("a")).by("age")), __.as("a").out().has("age").has("name").where(P.eq("a")).by("age"), Collections.singletonList(InlineFilterStrategy.instance())},
{has("value", 0).filter(out()).dedup(), has("value", 0).filter(out()).dedup(), Collections.emptyList()},
{has("value", 0).or(has("name"), has("age")).has("value", 1).dedup(), has("value", 0).has("value", 1).or(has("name"), has("age")).dedup(), Collections.singletonList(InlineFilterStrategy.instance())},
{has("value", 0).or(out(), in()).as(Graph.Hidden.hide("x")).has("value", 1).dedup(), has("value", 0).has("value", 1).or(outE(), inE()).dedup(), TraversalStrategies.GlobalCache.getStrategies(Graph.class).toList()},
{has("value", 0).and(has("age"), has("name", "marko")).is(10), __.is(10).has("value", 0).has("age").has("name", "marko"), Collections.singletonList(InlineFilterStrategy.instance())},
{has("value", 0).filter(or(not(has("age")), has("age", 1))).has("value", 1).dedup(), has("value", 0).has("value", 1).or(not(filter(properties("age"))), has("age", 1)).dedup(), TraversalStrategies.GlobalCache.getStrategies(Graph.class).toList()},
});
}
}