/*
* 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.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.dsl.graph.GraphTraversal;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__;
import org.apache.tinkerpop.gremlin.process.traversal.step.filter.HasStep;
import org.apache.tinkerpop.gremlin.process.traversal.step.util.HasContainer;
import org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversalStrategies;
import org.apache.tinkerpop.gremlin.structure.T;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import java.util.Arrays;
import static org.apache.tinkerpop.gremlin.process.traversal.P.eq;
import static org.apache.tinkerpop.gremlin.process.traversal.P.gt;
import static org.apache.tinkerpop.gremlin.process.traversal.P.lt;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.V;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.and;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.as;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.dedup;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.drop;
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.__.hasLabel;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.limit;
import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.match;
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.__.tail;
import static org.junit.Assert.assertEquals;
/**
* @author Marko A. Rodriguez (http://markorodriguez.com)
*/
@RunWith(Parameterized.class)
public class InlineFilterStrategyTest {
@Parameterized.Parameter(value = 0)
public Traversal original;
@Parameterized.Parameter(value = 1)
public Traversal optimized;
@Test
public void doTest() {
final TraversalStrategies strategies = new DefaultTraversalStrategies();
strategies.addStrategies(InlineFilterStrategy.instance());
this.original.asAdmin().setStrategies(strategies);
this.original.asAdmin().applyStrategies();
assertEquals(this.optimized, this.original);
}
@Parameterized.Parameters(name = "{0}")
public static Iterable<Object[]> generateTestParameters() {
return Arrays.asList(new Traversal[][]{
{has("age", 10).as("a").has("name", "marko").as("b").coin(0.5).as("c"), addHas(__.start(), "age", eq(10), "name", eq("marko")).as("a", "b").coin(0.5).as("c")},
//
{filter(out("knows")), filter(out("knows"))},
{filter(has("age", gt(10))).as("a"), has("age", gt(10)).as("a")},
{filter(has("age", gt(10)).as("b")).as("a"), has("age", gt(10)).as("b", "a")},
{filter(has("age", gt(10)).as("a")), has("age", gt(10)).as("a")},
{filter(and(has("age", gt(10)).as("a"), has("name", "marko"))), addHas(__.start(), "age", gt(10), "name", eq("marko")).as("a")},
//
{or(has("name", "marko"), has("age", 32)), or(has("name", "marko"), has("age", 32))},
{or(has("name", "marko"), has("name", "bob")), has("name", eq("marko").or(eq("bob")))},
{or(has("name", "marko"), has("name")), or(has("name", "marko"), has("name"))},
{or(has("age", 10), and(has("age", gt(20)), has("age", lt(100)))), has("age", eq(10).or(gt(20).and(lt(100))))},
{or(has("name", "marko"), filter(has("name", "bob"))), has("name", eq("marko").or(eq("bob")))},
{or(has("name", "marko"), filter(or(filter(has("name", "bob")), has("name", "stephen")))), has("name", eq("marko").or(eq("bob").or(eq("stephen"))))},
{or(has("name", "marko").as("a"), filter(or(filter(has("name", "bob")).as("b"), has("name", "stephen").as("c")))), has("name", eq("marko").or(eq("bob").or(eq("stephen")))).as("a", "b", "c")},
//
{and(has("age", gt(10)), filter(has("age", 22))), addHas(__.start(), "age", gt(10), "age", eq(22))},
{and(has("age", gt(10)).as("a"), filter(has("age", 22).as("b")).as("c")).as("d"), addHas(__.start(), "age", gt(10), "age", eq(22)).as("a", "b", "c", "d")},
{and(has("age", gt(10)).as("a"), and(filter(has("age", 22).as("b")).as("c"), has("name", "marko").as("d"))), addHas(__.start(), "age", gt(10), "age", eq(22), "name", eq("marko")).as("a", "b", "c", "d")},
{and(has("age", gt(10)).as("a"), and(has("name", "stephen").as("b"), has("name", "marko").as("c")).as("d")).as("e"), addHas(__.start(), "age", gt(10), "name", eq("stephen"), "name", eq("marko")).as("a", "b", "c", "d", "e")},
{and(has("age", gt(10)), and(out("knows"), has("name", "marko"))), has("age", gt(10)).and(out("knows"), has("name", "marko"))},
{and(has("age", gt(20)), or(has("age", lt(10)), has("age", gt(100)))), addHas(__.start(), "age", gt(20), "age", lt(10).or(gt(100)))},
{and(has("age", gt(20)).as("a"), or(has("age", lt(10)), has("age", gt(100)).as("b"))), addHas(__.start(), "age", gt(20), "age", lt(10).or(gt(100))).as("a", "b")},
{and(has("age", gt(20)).as("a"), or(has("age", lt(10)).as("c"), has("age", gt(100)).as("b"))), addHas(__.start(), "age", gt(20), "age", lt(10).or(gt(100))).as("a", "b", "c")},
//
{V().match(as("a").has("age", 10), as("a").filter(has("name")).as("b")), V().has("age", 10).as("a").match(as("a").has("name").as("b"))},
{match(as("a").has("age", 10), as("a").filter(has("name")).as("b")), match(as("a").has("age", 10), as("a").has("name").as("b"))},
{match(as("a").has("age", 10).both().as("b"), as("b").out().as("c")), match(as("a").has("age", 10).both().as("b"), as("b").out().as("c"))},
{__.map(match(as("a").has("age", 10), as("a").filter(has("name")).as("b"))), __.map(match(as("a").has("age", 10), as("a").has("name").as("b")))},
{V().match(as("a").has("age", 10)), V().has("age", 10).as("a")},
{V().match(as("a").has("age", 10).has("name", "marko").as("b")), V().has("age", 10).has("name", "marko").as("a", "b")},
{V().match(as("a").has("age", 10).has("name", "marko").as("b"), as("a").out("knows").as("c")), V().has("age", 10).has("name", "marko").as("a", "b").match(as("a").out("knows").as("c"))},
{V().match(as("a").out("knows").as("c"), as("a").has("age", 10).has("name", "marko").as("b")), V().has("age", 10).has("name", "marko").as("a", "b").match(as("a").out("knows").as("c"))},
{V().match(as("a").out("knows").as("c"), as("a").has("age", 10).has("name", "marko").as("b"), as("a").has("name", "bob")), V().has("age", 10).has("name", "marko").has("name", "bob").as("a", "b").match(as("a").out("knows").as("c"))},
{V().match(as("a").has("age", 10).as("b"), as("a").filter(has("name")).as("b")), V().has("age", 10).as("a", "b").match(as("a").has("name").as("b"))},
//
{filter(dedup()), filter(dedup())},
{filter(filter(drop())), filter(drop())},
{and(has("name"), limit(10).has("age")), and(has("name"), limit(10).has("age"))},
{filter(tail(10).as("a")), filter(tail(10).as("a"))},
//
{outE().hasLabel("knows").inV(), outE("knows").inV()},
{outE().hasLabel("knows").hasLabel("created").inV(), outE("knows").hasLabel("created").inV()},
{outE().or(hasLabel("knows"), hasLabel("created")).inV(), outE("knows", "created").inV()},
{outE().or(hasLabel("knows").as("a"), hasLabel("created").as("b")).as("c").inV(), outE("knows", "created").as("a", "b", "c").inV()},
{outE().hasLabel(P.eq("knows").or(P.gt("created"))).has("weight", gt(1.0)).inV(), addHas(outE(), T.label.getAccessor(), P.eq("knows").or(P.gt("created")), "weight", gt(1.0)).inV()},
{outE().hasLabel(P.eq("knows").or(P.eq("created"))).has("weight", gt(1.0)).inV(), outE("knows", "created").has("weight", gt(1.0)).inV()},
// {outE().or(has(T.label,P.within("knows","likes")).hasLabel("created")).inV(), outE("knows", "likes", "created").inV()},
{outE().hasLabel(P.within("knows", "created")).inV(), outE("knows", "created").inV()},
});
}
private static GraphTraversal.Admin<?, ?> addHas(final GraphTraversal<?, ?> traversal, final Object... hasKeyValues) {
final HasStep<?> hasStep = new HasStep<>((Traversal.Admin) traversal);
for (int i = 0; i < hasKeyValues.length; i = i + 2) {
hasStep.addHasContainer(new HasContainer((String) hasKeyValues[i], (P) hasKeyValues[i + 1]));
}
return traversal.asAdmin().addStep(hasStep);
}
}