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org.umlg.sqlg.test.gremlincompile.TestGremlinOptional Maven / Gradle / Ivy
package org.umlg.sqlg.test.gremlincompile;
import org.apache.tinkerpop.gremlin.AbstractGremlinTest;
import org.apache.tinkerpop.gremlin.process.traversal.Path;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.DefaultGraphTraversal;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__;
import org.apache.tinkerpop.gremlin.structure.*;
import org.apache.tinkerpop.gremlin.structure.io.GraphReader;
import org.apache.tinkerpop.gremlin.structure.io.gryo.GryoIo;
import org.apache.tinkerpop.gremlin.structure.io.gryo.GryoReader;
import org.junit.Assert;
import org.junit.Test;
import org.umlg.sqlg.test.BaseTest;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.List;
import java.util.Optional;
import java.util.function.Predicate;
/**
* Date: 2016/04/14
* Time: 6:36 PM
*/
public class TestGremlinOptional extends BaseTest {
@Test
public void testOptionalWithHasContainer() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A", "name", "a1");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B", "name", "b1");
Vertex b2 = this.sqlgGraph.addVertex(T.label, "B", "name", "b2");
a1.addEdge("ab", b1);
a1.addEdge("ab", b2);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out().hasLabel("B")).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(2, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b2)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testOptionalWithHasContainer2() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A", "name", "a1");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B", "name", "b1");
Vertex b2 = this.sqlgGraph.addVertex(T.label, "B", "name", "b2");
Vertex c1 = this.sqlgGraph.addVertex(T.label, "C", "name", "c1");
Vertex c2 = this.sqlgGraph.addVertex(T.label, "C", "name", "c2");
a1.addEdge("ab", b1);
a1.addEdge("ab", b2);
b1.addEdge("bc", c1);
b1.addEdge("bc", c2);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out().optional(__.out().hasLabel("C"))).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(3, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(b1) && p.get(2).equals(c1),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(b1) && p.get(2).equals(c2),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b2)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testUnoptimizableChooseStep() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B");
Vertex b2 = this.sqlgGraph.addVertex(T.label, "B");
a1.addEdge("ab", b1);
a1.addEdge("ab", b2);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal)this.sqlgGraph.traversal()
.V(a1).choose(v -> v.label().equals("A"), __.out(), __.in());
Assert.assertEquals(2, traversal.getSteps().size());
List vertices = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(2, vertices.size());
}
@Test
public void testOptional() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A", "name", "a1");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B", "name", "b1");
Vertex b2 = this.sqlgGraph.addVertex(T.label, "B", "name", "b2");
a1.addEdge("ab", b1);
a1.addEdge("ab", b2);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out()).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(2, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b2)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testOptionalNested() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A", "name", "a1");
Vertex a2 = this.sqlgGraph.addVertex(T.label, "A", "name", "a2");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B", "name", "b1");
Vertex b2 = this.sqlgGraph.addVertex(T.label, "B", "name", "b2");
Vertex c1 = this.sqlgGraph.addVertex(T.label, "C", "name", "c1");
a1.addEdge("ab", b1);
a1.addEdge("ab", b2);
b1.addEdge("bc", c1);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out().optional(__.out())).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(2, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(b1) && p.get(2).equals(c1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b2)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
DefaultGraphTraversal traversal1 = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V().hasLabel("A").optional(__.out().optional(__.out())).path();
Assert.assertEquals(4, traversal1.getSteps().size());
paths = traversal1.toList();
Assert.assertEquals(2, traversal1.getSteps().size());
Assert.assertEquals(3, paths.size());
pathsToAssert = Arrays.asList(
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(b1) && p.get(2).equals(c1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b2),
p -> p.size() == 1 && p.get(0).equals(a2)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testOptionalMultipleEdgeLabels() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B");
Vertex b2 = this.sqlgGraph.addVertex(T.label, "B");
a1.addEdge("ab", b1);
a1.addEdge("ab", b2);
Vertex bb1 = this.sqlgGraph.addVertex(T.label, "BB");
Vertex bb2 = this.sqlgGraph.addVertex(T.label, "BB");
a1.addEdge("abb", bb1);
a1.addEdge("abb", bb2);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out("ab", "abb")).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(4, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b2),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(bb1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(bb2)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testOptionalNestedMultipleEdgeLabels() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B");
Vertex b2 = this.sqlgGraph.addVertex(T.label, "B");
Vertex c1 = this.sqlgGraph.addVertex(T.label, "C");
a1.addEdge("ab", b1);
a1.addEdge("ab", b2);
b1.addEdge("bc", c1);
Vertex bb1 = this.sqlgGraph.addVertex(T.label, "BB");
Vertex bb2 = this.sqlgGraph.addVertex(T.label, "BB");
Vertex cc1 = this.sqlgGraph.addVertex(T.label, "CC");
a1.addEdge("abb", bb1);
a1.addEdge("abb", bb2);
bb1.addEdge("bbcc", cc1);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out("ab", "abb").optional(__.out("bc", "bbcc"))).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(4, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(b1) && p.get(2).equals(c1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b2),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(bb1) && p.get(2).equals(cc1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(bb2)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testOptionalOnNonExistingEdgeLabel() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A", "name", "a1");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B", "name", "b1");
a1.addEdge("ab", b1);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out("ab", "bb")).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(1, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b1)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
DefaultGraphTraversal traversal1 = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out("bb")).path();
Assert.assertEquals(3, traversal1.getSteps().size());
paths = traversal1.toList();
Assert.assertEquals(2, traversal1.getSteps().size());
Assert.assertEquals(1, paths.size());
pathsToAssert = Arrays.asList(
p -> p.size() == 1 && p.get(0).equals(a1)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testMultipleNestedOptional() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B");
Vertex b2 = this.sqlgGraph.addVertex(T.label, "B");
Vertex c1 = this.sqlgGraph.addVertex(T.label, "C");
Vertex cc1 = this.sqlgGraph.addVertex(T.label, "CC");
Vertex cc2 = this.sqlgGraph.addVertex(T.label, "CC");
a1.addEdge("ab", b1);
a1.addEdge("ab", b2);
b1.addEdge("bc", c1);
b2.addEdge("bcc", cc2);
c1.addEdge("ccc", cc1);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1)
.optional(
__.out("ab").optional(
__.out("bc")
)
)
.path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(2, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(b1) && p.get(2).equals(c1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b2)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
DefaultGraphTraversal traversal1 = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1)
.optional(
__.out("ab").optional(
__.out("bc")
)
)
.out()
.path();
Assert.assertEquals(4, traversal1.getSteps().size());
paths = traversal1.toList();
Assert.assertEquals(3, traversal1.getSteps().size());
Assert.assertEquals(2, paths.size());
pathsToAssert = Arrays.asList(
p -> p.size() == 4 && p.get(0).equals(a1) && p.get(1).equals(b1) && p.get(2).equals(c1) && p.get(3).equals(cc1),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(b2) && p.get(2).equals(cc2)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testOptionalOutNotThere() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B");
b1.addEdge("knows", a1);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out("knows")).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(1, paths.size());
}
@Test
public void g_VX2X_optionalXoutXknowsXX() throws IOException {
Graph g = this.sqlgGraph;
final GraphReader reader = GryoReader.build()
.mapper(g.io(GryoIo.build()).mapper().create())
.create();
try (final InputStream stream = AbstractGremlinTest.class.getResourceAsStream("/tinkerpop-modern.kryo")) {
reader.readGraph(stream, g);
}
this.sqlgGraph.tx().commit();
assertModernGraph(g, true, false);
Object vadas = convertToVertexId(g, "vadas");
Vertex vadasVertex = g.traversal().V(vadas).next();
List paths = g.traversal().V(vadasVertex).optional(__.out("knows")).path().toList();
Assert.assertEquals(1, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 1 && p.get(0).equals(vadasVertex)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
List vertices = g.traversal().V(vadasVertex).optional(__.out("knows")).toList();
Assert.assertEquals(1, vertices.size());
Assert.assertEquals(vadasVertex, vertices.get(0));
DefaultGraphTraversal traversal = (DefaultGraphTraversal) g.traversal()
.V().optional(__.out().optional(__.out())).path();
Assert.assertEquals(3, traversal.getSteps().size());
paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(10, paths.size());
pathsToAssert = Arrays.asList(
p -> p.size() == 2 && p.get(0).equals(convertToVertex(g, "marko")) && p.get(1).equals(convertToVertex(g, "lop")),
p -> p.size() == 2 && p.get(0).equals(convertToVertex(g, "marko")) && p.get(1).equals(convertToVertex(g, "vadas")),
p -> p.size() == 3 && p.get(0).equals(convertToVertex(g, "marko")) && p.get(1).equals(convertToVertex(g, "josh")) && p.get(2).equals(convertToVertex(g, "lop")),
p -> p.size() == 3 && p.get(0).equals(convertToVertex(g, "marko")) && p.get(1).equals(convertToVertex(g, "josh")) && p.get(2).equals(convertToVertex(g, "ripple")),
p -> p.size() == 1 && p.get(0).equals(convertToVertex(g, "vadas")),
p -> p.size() == 1 && p.get(0).equals(convertToVertex(g, "lop")),
p -> p.size() == 2 && p.get(0).equals(convertToVertex(g, "josh")) && p.get(1).equals(convertToVertex(g, "lop")),
p -> p.size() == 2 && p.get(0).equals(convertToVertex(g, "josh")) && p.get(1).equals(convertToVertex(g, "ripple")),
p -> p.size() == 1 && p.get(0).equals(convertToVertex(g, "ripple")),
p -> p.size() == 2 && p.get(0).equals(convertToVertex(g, "peter")) && p.get(1).equals(convertToVertex(g, "lop"))
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testCurrentTreeLabelToSelf1() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A");
Vertex a2 = this.sqlgGraph.addVertex(T.label, "A");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B");
a1.addEdge("aa", a2);
a1.addEdge("ab", b1);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V().optional(__.out().optional(__.out())).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(4, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(a2),
p -> p.size() == 1 && p.get(0).equals(a2),
p -> p.size() == 1 && p.get(0).equals(b1)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testCurrentTreeLabelToSelfSimple() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B");
a1.addEdge("aa", a1);
a1.addEdge("ab", b1);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out().optional(__.out())).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(3, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(a1) && p.get(2).equals(a1),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(a1) && p.get(2).equals(b1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b1)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testCurrentTreeLabelToSelf() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B");
a1.addEdge("aa", a1);
a1.addEdge("aa", a1);
a1.addEdge("ab", b1);
a1.addEdge("ab", b1);
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out().optional(__.out())).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(10, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(a1) && p.get(2).equals(a1),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(a1) && p.get(2).equals(a1),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(a1) && p.get(2).equals(a1),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(a1) && p.get(2).equals(a1),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(a1) && p.get(2).equals(b1),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(a1) && p.get(2).equals(b1),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(a1) && p.get(2).equals(b1),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(a1) && p.get(2).equals(b1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b1)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testOptionalLeftJoin() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A", "name", "a1");
Vertex b1 = this.sqlgGraph.addVertex(T.label, "B", "name", "b1");
Vertex b2 = this.sqlgGraph.addVertex(T.label, "B", "name", "b2");
Vertex b3 = this.sqlgGraph.addVertex(T.label, "B", "name", "b3");
Vertex c1 = this.sqlgGraph.addVertex(T.label, "C", "name", "c1");
Vertex d1 = this.sqlgGraph.addVertex(T.label, "D", "name", "d1");
a1.addEdge("ab", b1);
a1.addEdge("ab", b2);
a1.addEdge("ab", b3);
b1.addEdge("bc", c1);
b2.addEdge("bd", d1);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1).optional(__.out().optional(__.out())).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(3, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(b1) && p.get(2).equals(c1),
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(b2) && p.get(2).equals(d1),
p -> p.size() == 2 && p.get(0).equals(a1) && p.get(1).equals(b3)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
@Test
public void testOptionalToSelf() {
Vertex a1 = this.sqlgGraph.addVertex(T.label, "A", "name", "a1");
Vertex a2 = this.sqlgGraph.addVertex(T.label, "A", "name", "a2");
Edge e1 = a1.addEdge("aa", a2);
this.sqlgGraph.tx().commit();
DefaultGraphTraversal traversal = (DefaultGraphTraversal) this.sqlgGraph.traversal()
.V(a1.id()).optional(__.toE(Direction.BOTH, "aa").otherV()).path();
Assert.assertEquals(3, traversal.getSteps().size());
List paths = traversal.toList();
Assert.assertEquals(2, traversal.getSteps().size());
Assert.assertEquals(1, paths.size());
List> pathsToAssert = Arrays.asList(
p -> p.size() == 3 && p.get(0).equals(a1) && p.get(1).equals(e1) && p.get(2).equals(a2)
);
for (Predicate pathPredicate : pathsToAssert) {
Optional path = paths.stream().filter(pathPredicate).findAny();
Assert.assertTrue(path.isPresent());
Assert.assertTrue(paths.remove(path.get()));
}
Assert.assertTrue(paths.isEmpty());
}
}