public static Graph getGraph() {
Graph g = Factory.createGraphMem();
g.add(
new Triple(
NodeFactory.createURI("http://example.com/subject"),
NodeFactory.createURI("http://example.com/predicate"),
NodeFactory.createURI("http://example.com/object")));
g.add(
new Triple(
NodeFactory.createBlankNode(BlankNodeId.create("a")),
NodeFactory.createURI("http://example.com/p1"),
NodeFactory.createBlankNode(BlankNodeId.create("b"))));
g.add(
new Triple(
NodeFactory.createBlankNode(BlankNodeId.create("b")),
NodeFactory.createURI("http://example.com/p2"),
NodeFactory.createLiteral("foo")));
g.add(
new Triple(
NodeFactory.createURI("http://example.com/ns/e"),
NodeFactory.createURI("http://example.com/ns/p5"),
NodeFactory.createLiteral("verify base works")));
return g;
}
@BeforeClass
public static void setup() {
// Dataset for implicit join tests
implJoin = DatasetFactory.createTxnMem();
Node a = NodeFactory.createURI("http://a");
Node b = NodeFactory.createURI("http://b");
Node c = NodeFactory.createURI("http://c");
Node p1 = NodeFactory.createURI("http://p1");
Node p2 = NodeFactory.createURI("http://p2");
Node pSelf = NodeFactory.createURI("http://self");
Node o = NodeFactory.createLiteral("object");
DatasetGraph dsg = implJoin.asDatasetGraph();
dsg.add(Quad.defaultGraphNodeGenerated, a, p1, o);
dsg.add(Quad.defaultGraphNodeGenerated, a, p2, o);
dsg.add(Quad.defaultGraphNodeGenerated, b, p1, o);
dsg.add(Quad.defaultGraphNodeGenerated, b, p2, o);
dsg.add(Quad.defaultGraphNodeGenerated, c, p1, o);
// dsg.add(Quad.defaultGraphNodeGenerated, a, pSelf, a);
// Currently these optimizations are off by default
Assert.assertFalse(ARQ.isFalse(ARQ.optFilterImplicitJoin));
Assert.assertFalse(ARQ.isFalse(ARQ.optImplicitLeftJoin));
}
protected void generateData(
MapDriver<LongWritable, TripleWritable, LongWritable, QuadWritable> driver, int num) {
for (int i = 0; i < num; i++) {
Triple t =
new Triple(
NodeFactory.createURI("http://subjects/" + i),
NodeFactory.createURI("http://predicate"),
NodeFactory.createLiteral(Integer.toString(i), XSDDatatype.XSDinteger));
Quad q = new Quad(t.getSubject(), t);
driver.addInput(new LongWritable(i), new TripleWritable(t));
driver.addOutput(new LongWritable(i), new QuadWritable(q));
}
}
/**
* Tests quads to triples conversion
*
* @throws IOException
*/
@Test
public void triples_to_quads_mapper_01() throws IOException {
MapDriver<LongWritable, TripleWritable, LongWritable, QuadWritable> driver =
this.getMapDriver();
Triple t =
new Triple(
NodeFactory.createURI("http://s"),
NodeFactory.createURI("http://p"),
NodeFactory.createLiteral("test"));
Quad q = new Quad(t.getSubject(), t);
driver
.withInput(
new Pair<LongWritable, TripleWritable>(new LongWritable(1), new TripleWritable(t)))
.withOutput(new Pair<LongWritable, QuadWritable>(new LongWritable(1), new QuadWritable(q)));
driver.runTest();
}