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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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* KIND, either express or implied. See the License for the
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package org.apache.tinkerpop.gremlin.structure.io;
import org.apache.tinkerpop.gremlin.AbstractGremlinTest;
import org.apache.tinkerpop.gremlin.FeatureRequirement;
import org.apache.tinkerpop.gremlin.structure.Edge;
import org.apache.tinkerpop.gremlin.structure.Graph;
import org.apache.tinkerpop.gremlin.structure.T;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONIo;
import org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONVersion;
import org.apache.tinkerpop.gremlin.structure.io.graphson.TypeInfo;
import org.apache.tinkerpop.gremlin.structure.util.detached.DetachedFactory;
import org.apache.tinkerpop.gremlin.util.iterator.IteratorUtils;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.function.Function;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* Tests for all IO implementations that are specific to reading and writing of a {@link Edge}.
*
* @author Stephen Mallette (http://stephen.genoprime.com)
*/
@RunWith(Parameterized.class)
public class IoEdgeTest extends AbstractGremlinTest {
@Parameterized.Parameters(name = "{0}")
public static Iterable<Object[]> data() {
return Arrays.asList(new Object[][]{
{"graphson-v1", false, false,
(Function<Graph,GraphReader>) g -> g.io(IoCore.graphson()).reader().create(),
(Function<Graph, GraphWriter>) g -> g.io(IoCore.graphson()).writer().create()},
{"graphson-v1-embedded", true, true,
(Function<Graph,GraphReader>) g -> g.io(IoCore.graphson()).reader().mapper(g.io(IoCore.graphson()).mapper().embedTypes(true).create()).create(),
(Function<Graph, GraphWriter>) g -> g.io(IoCore.graphson()).writer().mapper(g.io(IoCore.graphson()).mapper().embedTypes(true).create()).create()},
{"graphson-v2", false, false,
(Function<Graph, GraphReader>) g -> g.io(IoCore.graphson()).reader().mapper(g.io(GraphSONIo.build(GraphSONVersion.V2_0)).mapper().typeInfo(TypeInfo.NO_TYPES).create()).create(),
(Function<Graph, GraphWriter>) g -> g.io(IoCore.graphson()).writer().mapper(g.io(GraphSONIo.build(GraphSONVersion.V2_0)).mapper().typeInfo(TypeInfo.NO_TYPES).create()).create()},
{"graphson-v2-embedded", true, true,
(Function<Graph, GraphReader>) g -> g.io(IoCore.graphson()).reader().mapper(g.io(GraphSONIo.build(GraphSONVersion.V2_0)).mapper().typeInfo(TypeInfo.PARTIAL_TYPES).create()).create(),
(Function<Graph, GraphWriter>) g -> g.io(IoCore.graphson()).writer().mapper(g.io(GraphSONIo.build(GraphSONVersion.V2_0)).mapper().typeInfo(TypeInfo.PARTIAL_TYPES).create()).create()},
{"graphson-v3", true, true,
(Function<Graph, GraphReader>) g -> g.io(IoCore.graphson()).reader().mapper(g.io(GraphSONIo.build(GraphSONVersion.V3_0)).mapper().create()).create(),
(Function<Graph, GraphWriter>) g -> g.io(IoCore.graphson()).writer().mapper(g.io(GraphSONIo.build(GraphSONVersion.V3_0)).mapper().create()).create()},
{"gryo", true, true,
(Function<Graph,GraphReader>) g -> g.io(IoCore.gryo()).reader().create(),
(Function<Graph, GraphWriter>) g -> g.io(IoCore.gryo()).writer().create()}
});
}
@Parameterized.Parameter(value = 0)
public String ioType;
@Parameterized.Parameter(value = 1)
public boolean assertIdDirectly;
@Parameterized.Parameter(value = 2)
public boolean assertDouble;
@Parameterized.Parameter(value = 3)
public Function<Graph, GraphReader> readerMaker;
@Parameterized.Parameter(value = 4)
public Function<Graph, GraphWriter> writerMaker;
@Test
@FeatureRequirement(featureClass = Graph.Features.EdgeFeatures.class, feature = Graph.Features.EdgeFeatures.FEATURE_ADD_EDGES)
@FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = Graph.Features.VertexFeatures.FEATURE_ADD_VERTICES)
@FeatureRequirement(featureClass = Graph.Features.EdgePropertyFeatures.class, feature = Graph.Features.EdgePropertyFeatures.FEATURE_DOUBLE_VALUES)
public void shouldReadWriteEdge() throws Exception {
final Vertex v1 = graph.addVertex(T.label, "person");
final Vertex v2 = graph.addVertex(T.label, "person");
final Edge e = v1.addEdge("friend", v2, "weight", 0.5d, "acl", "rw");
assertEdge(v1, v2, e, true);
}
@Test
@FeatureRequirement(featureClass = Graph.Features.EdgeFeatures.class, feature = Graph.Features.EdgeFeatures.FEATURE_ADD_EDGES)
@FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = Graph.Features.VertexFeatures.FEATURE_ADD_VERTICES)
@FeatureRequirement(featureClass = Graph.Features.EdgePropertyFeatures.class, feature = Graph.Features.EdgePropertyFeatures.FEATURE_DOUBLE_VALUES)
public void shouldReadWriteDetachedEdge() throws Exception {
final Vertex v1 = graph.addVertex(T.label, "person");
final Vertex v2 = graph.addVertex(T.label, "person");
final Edge e = DetachedFactory.detach(v1.addEdge("friend", v2, "weight", 0.5d, "acl", "rw"), true);
assertEdge(v1, v2, e, true);
}
@Test
@FeatureRequirement(featureClass = Graph.Features.EdgeFeatures.class, feature = Graph.Features.EdgeFeatures.FEATURE_ADD_EDGES)
@FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = Graph.Features.VertexFeatures.FEATURE_ADD_VERTICES)
@FeatureRequirement(featureClass = Graph.Features.EdgePropertyFeatures.class, feature = Graph.Features.EdgePropertyFeatures.FEATURE_DOUBLE_VALUES)
public void shouldReadWriteDetachedEdgeAsReference() throws Exception {
final Vertex v1 = graph.addVertex(T.label, "person");
final Vertex v2 = graph.addVertex(T.label, "person");
final Edge e = DetachedFactory.detach(v1.addEdge("friend", v2, "weight", 0.5d, "acl", "rw"), false);
assertEdge(v1, v2, e, false);
}
private void assertEdge(final Vertex v1, final Vertex v2, final Edge e, final boolean assertProperties) throws IOException {
try (final ByteArrayOutputStream os = new ByteArrayOutputStream()) {
final GraphWriter writer = writerMaker.apply(graph);
writer.writeEdge(os, e);
final AtomicBoolean called = new AtomicBoolean(false);
final GraphReader reader = readerMaker.apply(graph);
try (final ByteArrayInputStream bais = new ByteArrayInputStream(os.toByteArray())) {
reader.readEdge(bais, edge -> {
final Edge detachedEdge = (Edge) edge;
assertEquals(e.id(), assertIdDirectly ? detachedEdge.id() : graph.edges(detachedEdge.id().toString()).next().id());
assertEquals(v1.id(), assertIdDirectly ? detachedEdge.outVertex().id() : graph.vertices(detachedEdge.outVertex().id().toString()).next().id());
assertEquals(v2.id(), assertIdDirectly ? detachedEdge.inVertex().id() : graph.vertices(detachedEdge.inVertex().id().toString()).next().id());
assertEquals(v1.label(), detachedEdge.outVertex().label());
assertEquals(v2.label(), detachedEdge.inVertex().label());
assertEquals(e.label(), detachedEdge.label());
if (assertProperties) {
assertEquals(assertDouble ? 0.5d : 0.5f, e.properties("weight").next().value());
assertEquals("rw", e.properties("acl").next().value());
} else {
assertEquals(e.keys().size(), IteratorUtils.count(detachedEdge.properties()));
}
called.set(true);
return null;
});
}
assertTrue(called.get());
}
}
}