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* 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.groovy.jsr223;
import org.apache.commons.configuration.MapConfiguration;
import org.apache.tinkerpop.gremlin.process.traversal.Traversal;
import org.apache.tinkerpop.gremlin.process.traversal.Traverser;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__;
import org.apache.tinkerpop.gremlin.process.traversal.strategy.decoration.SubgraphStrategy;
import org.apache.tinkerpop.gremlin.process.traversal.strategy.decoration.TranslationStrategy;
import org.apache.tinkerpop.gremlin.process.traversal.strategy.verification.ReadOnlyStrategy;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerFactory;
import org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerGraph;
import org.apache.tinkerpop.gremlin.util.function.Lambda;
import org.junit.Test;
import javax.script.Bindings;
import javax.script.SimpleBindings;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
/**
* @author Marko A. Rodriguez (http://markorodriguez.com)
*/
public class GroovyTranslatorTest {
@Test
public void shouldHandleStrategies() throws Exception {
final TinkerGraph graph = TinkerFactory.createModern();
GraphTraversalSource g = graph.traversal();
g = g.withStrategies(SubgraphStrategy.create(new MapConfiguration(new HashMap<String, Object>() {{
put(SubgraphStrategy.VERTICES, __.has("name", "marko"));
}})));
final Bindings bindings = new SimpleBindings();
bindings.put("g", g);
Traversal.Admin<Vertex, Object> traversal = new GremlinGroovyScriptEngine().eval(g.V().values("name").asAdmin().getBytecode(), bindings);
assertEquals("marko", traversal.next());
assertFalse(traversal.hasNext());
//
traversal = new GremlinGroovyScriptEngine().eval(g.withoutStrategies(SubgraphStrategy.class).V().count().asAdmin().getBytecode(), bindings);
assertEquals(new Long(6), traversal.next());
assertFalse(traversal.hasNext());
//
traversal = new GremlinGroovyScriptEngine().eval(g.withStrategies(SubgraphStrategy.create(new MapConfiguration(new HashMap<String, Object>() {{
put(SubgraphStrategy.VERTICES, __.has("name", "marko"));
}})), ReadOnlyStrategy.instance()).V().values("name").asAdmin().getBytecode(), bindings);
assertEquals("marko", traversal.next());
assertFalse(traversal.hasNext());
}
@Test
public void shouldSupportStringSupplierLambdas() throws Exception {
final TinkerGraph graph = TinkerFactory.createModern();
GraphTraversalSource g = graph.traversal();
g = g.withStrategies(new TranslationStrategy(g, GroovyTranslator.of("g")));
GraphTraversal.Admin<Vertex, Integer> t = g.withSideEffect("lengthSum", 0).withSack(1)
.V()
.filter(Lambda.predicate("it.get().label().equals('person')"))
.flatMap(Lambda.function("it.get().vertices(Direction.OUT)"))
.map(Lambda.<Traverser<Object>, Integer>function("it.get().value('name').length()"))
.sideEffect(Lambda.consumer("{ x -> x.sideEffects(\"lengthSum\", x.<Integer>sideEffects('lengthSum') + x.get()) }"))
.order().by(Lambda.comparator("a,b -> a <=> b"))
.sack(Lambda.biFunction("{ a,b -> a + b }"))
.asAdmin();
final List<Integer> sacks = new ArrayList<>();
final List<Integer> lengths = new ArrayList<>();
while (t.hasNext()) {
final Traverser.Admin<Integer> traverser = t.nextTraverser();
sacks.add(traverser.sack());
lengths.add(traverser.get());
}
assertFalse(t.hasNext());
//
assertEquals(6, lengths.size());
assertEquals(3, lengths.get(0).intValue());
assertEquals(3, lengths.get(1).intValue());
assertEquals(3, lengths.get(2).intValue());
assertEquals(4, lengths.get(3).intValue());
assertEquals(5, lengths.get(4).intValue());
assertEquals(6, lengths.get(5).intValue());
///
assertEquals(6, sacks.size());
assertEquals(4, sacks.get(0).intValue());
assertEquals(4, sacks.get(1).intValue());
assertEquals(4, sacks.get(2).intValue());
assertEquals(5, sacks.get(3).intValue());
assertEquals(6, sacks.get(4).intValue());
assertEquals(7, sacks.get(5).intValue());
//
assertEquals(24, t.getSideEffects().<Number>get("lengthSum").intValue());
}
@Test
public void shouldHandleMaps() {
final TinkerGraph graph = TinkerFactory.createModern();
GraphTraversalSource g = graph.traversal();
String script = GroovyTranslator.of("g").translate(g.V().id().is(new LinkedHashMap() {{
put(3, "32");
put(Arrays.asList(1, 2, 3.1d), 4);
}}).asAdmin().getBytecode());
assertEquals(script, "g.V().id().is([((int) 3):(\"32\"),([(int) 1, (int) 2, 3.1d]):((int) 4)])");
}
@Test
public void shouldHaveValidToString() {
assertEquals("translator[h:gremlin-groovy]", GroovyTranslator.of("h").toString());
}
}