Examples with Quad org.apache.jena.sparql.core.Quad used on opensource projects

Example 36 with Quad

use of org.apache.jena.sparql.core.Quad in project jena by apache.

the class T_TxnDeadlockTest method test.

//@Test
public void test() {
    final StoreConnection storeConnection = StoreConnection.make(Location.mem());
    //ExecutorService executor = Executors.newCachedThreadPool()  ;     // Not seen blocking. 
    // 4 blocks maybe 1 in 4 times
    // 8 blocks (quad core) 2 in 3 times.
    ExecutorService executor = Executors.newFixedThreadPool(8);
    final AtomicInteger nbQuadruplesAdded = new AtomicInteger();
    final CountDownLatch doneSignal = new CountDownLatch(CONCURRENT_RANDOM_OPERATIONS);
    for (int i = 0; i < CONCURRENT_RANDOM_OPERATIONS; i++) {
        executor.execute(new Runnable() {

            @Override
            public void run() {
                try {
                    if (numberGenerator.nextInt(2) == 0) {
                        DatasetGraphTxn txnGraph = storeConnection.begin(ReadWrite.WRITE);
                        txnGraph.add(new Quad(NodeFactory.createURI("http://jena-example.org/" + numberGenerator.nextInt()), NodeFactory.createURI("http://jena-example.org/" + numberGenerator.nextInt()), NodeFactory.createURI("http://jena-example.org/" + numberGenerator.nextInt()), NodeFactory.createURI("http://jena-example.org/" + numberGenerator.nextInt())));
                        txnGraph.commit();
                        txnGraph.end();
                        nbQuadruplesAdded.incrementAndGet();
                    } else {
                        DatasetGraphTxn txnGraph = storeConnection.begin(ReadWrite.READ);
                        txnGraph.find(Node.ANY, Node.ANY, Node.ANY, Node.ANY);
                        //Iterator<Quad> iter = txnGraph.find(Node.ANY, Node.ANY, Node.ANY, Node.ANY);
                        //Iter.count(iter) ; // Consume
                        txnGraph.end();
                    }
                } finally {
                    doneSignal.countDown();
                }
            }
        });
    }
    // shutdown is orderly so sync'ing up before the shutdown is nice but not needed.
    try {
        doneSignal.await();
    } catch (InterruptedException e) {
        Thread.currentThread().interrupt();
    } finally {
        executor.shutdown();
    }
    DatasetGraphTxn txnGraph = storeConnection.begin(ReadWrite.READ);
    Iterator<Quad> result = txnGraph.find(Node.ANY, Node.ANY, Node.ANY, Node.ANY);
    long count = 0;
    while (result.hasNext()) {
        result.next();
        count++;
    }
    txnGraph.end();
    StoreConnection.release(storeConnection.getLocation());
    //System.out.println() ;
    System.out.println("FINISHED");
//        // This is unsafe - the quad adds may generate duplicates (ity's unlikly 4 random number reoccur but it's possible). 
//        Assert.assertEquals(count, nbQuadruplesAdded.get());
}

Example 37 with Quad

use of org.apache.jena.sparql.core.Quad in project jena by apache.

the class Iso method isomorphicQuads.

public static boolean isomorphicQuads(List<Quad> quads1, List<Quad> quads2, NodeIsomorphismMap isoMap) {
    if (quads1.size() != quads2.size())
        return false;
    for (int i = 0; i < quads1.size(); i++) {
        Quad q1 = quads1.get(i);
        Quad q2 = quads2.get(i);
        if (!quadIso(q1, q2, isoMap))
            return false;
    }
    return true;
}

Example 38 with Quad

use of org.apache.jena.sparql.core.Quad in project jena by apache.

the class TestAPI method testARQConstructQuad_Duplicate_1.

// Allow duplicated quads in execConstructQuads()
@Test
public void testARQConstructQuad_Duplicate_1() {
    String queryString = "CONSTRUCT { GRAPH ?g1 {?s ?p ?o} } WHERE { ?s ?p ?o. GRAPH ?g1 {?s1 ?p1 ?o1} }";
    Query q = QueryFactory.create(queryString, Syntax.syntaxARQ);
    QueryExecution qExec = QueryExecutionFactory.create(q, d);
    Iterator<Quad> ts = qExec.execConstructQuads();
    long count = 0;
    Quad expected = Quad.create(g1.asNode(), s.asNode(), p.asNode(), o.asNode());
    while (ts.hasNext()) {
        count++;
        Quad qd = ts.next();
        assertEquals(expected, qd);
    }
    // 3 duplicated quads
    assertEquals(3, count);
}

Example 39 with Quad

use of org.apache.jena.sparql.core.Quad in project jena by apache.

the class TestAPI method testARQConstructQuad_Prefix.

// Allow duplicated template quads in execConstructQuads()
@Test
public void testARQConstructQuad_Prefix() {
    String queryString = "PREFIX :   <http://example/ns#> CONSTRUCT { GRAPH :g1 { ?s :p ?o} } WHERE { ?s ?p ?o }";
    Query q = QueryFactory.create(queryString, Syntax.syntaxARQ);
    QueryExecution qExec = QueryExecutionFactory.create(q, d);
    Iterator<Quad> quads = qExec.execConstructQuads();
    DatasetGraph result = DatasetGraphFactory.create();
    long count = 0;
    while (quads.hasNext()) {
        count++;
        Quad qd = quads.next();
        result.add(qd);
    }
    DatasetGraph expected = DatasetGraphFactory.create();
    expected.add(g1.asNode(), s.asNode(), p.asNode(), o.asNode());
    assertEquals(1, count);
    assertTrue(IsoMatcher.isomorphic(expected, result));
}

Example 40 with Quad

use of org.apache.jena.sparql.core.Quad in project jena by apache.

the class TestAPI method testARQConstructQuad_Duplicate_3.

// Allow duplicated template quads in execConstructQuads()
@Test
public void testARQConstructQuad_Duplicate_3() {
    String queryString = "CONSTRUCT { GRAPH ?g1 {?s ?p ?o} GRAPH ?g1 {?s ?p ?o} } WHERE { ?s ?p ?o. GRAPH ?g1 {?s1 ?p1 ?o1} }";
    Query q = QueryFactory.create(queryString, Syntax.syntaxARQ);
    QueryExecution qExec = QueryExecutionFactory.create(q, d);
    Iterator<Quad> ts = qExec.execConstructQuads();
    long count = 0;
    Quad expected = Quad.create(g1.asNode(), s.asNode(), p.asNode(), o.asNode());
    while (ts.hasNext()) {
        count++;
        Quad qd = ts.next();
        assertEquals(expected, qd);
    }
    // 6 duplicated quads
    assertEquals(6, count);
}