Examples with VCursor de.fhg.igd.mongomvcc.VCursor used on opensource projects

Example 11 with VCursor

use of de.fhg.igd.mongomvcc.VCursor in project mongomvcc by igd-geo.

the class MongoDBVCollectionTest method insertIntoIndex.

/**
 * Tests if a person can be added into the local index
 */
@Test
public void insertIntoIndex() {
    VCollection persons = _master.getCollection("persons");
    assertNotNull(persons);
    Map<String, Object> peter = putPerson("Peter", 26);
    VCursor c = persons.find();
    assertEquals(1, c.size());
    Map<String, Object> peter2 = c.iterator().next();
    assertDocEquals(peter, peter2);
}

Example 12 with VCursor

use of de.fhg.igd.mongomvcc.VCursor in project mongomvcc by igd-geo.

the class MongoDBVCollectionTest method isolation.

/**
 * Tests if two threads can work isolated
 * @throws Exception if something goes wrong
 */
@Test
public void isolation() throws Exception {
    final CountDownLatch latch1 = new CountDownLatch(1);
    final CountDownLatch latch2 = new CountDownLatch(1);
    final Integer[] tresult = new Integer[2];
    Thread t = new Thread() {

        @Override
        public void run() {
            VCursor pc = _master.getCollection("persons").find();
            tresult[0] = pc.size();
            Map<String, Object> p1 = pc.iterator().next();
            assertEquals("Peter", p1.get("name"));
            latch2.countDown();
            try {
                latch1.await();
            } catch (InterruptedException e) {
                fail();
                throw new RuntimeException(e);
            }
            VCursor pc2 = _master.getCollection("persons").find();
            tresult[1] = pc2.size();
            Map<String, Object> p2 = pc2.iterator().next();
            assertEquals("Peter", p2.get("name"));
        }
    };
    putPerson("Peter", 26);
    _master.commit();
    assertEquals(1, _master.getCollection("persons").find().size());
    // check that the other thread sees the first person
    t.start();
    latch2.await();
    assertEquals(Integer.valueOf(1), tresult[0]);
    // add another person
    putPerson("Max", 6);
    _master.commit();
    assertEquals(2, _master.getCollection("persons").find().size());
    // check that the other thread does not see the second person
    latch1.countDown();
    t.join();
    assertEquals(Integer.valueOf(1), tresult[1]);
}

Example 13 with VCursor

use of de.fhg.igd.mongomvcc.VCursor in project mongomvcc by igd-geo.

the class MongoDBVCollectionTest method findMore.

/**
 * Tests if multiple objects matching a given example can be retrieved from a collection
 */
@Test
public void findMore() {
    for (int i = 0; i < 20; ++i) {
        putPerson(String.valueOf(i / 2), i / 2);
    }
    _master.commit();
    VCursor vc = _master.getCollection("persons").find(_factory.createDocument("name", "5"));
    assertEquals(2, vc.size());
    Iterator<Map<String, Object>> it = vc.iterator();
    Map<String, Object> p1 = it.next();
    assertEquals("5", p1.get("name"));
    assertEquals(Integer.valueOf(5), p1.get("age"));
    Map<String, Object> p2 = it.next();
    assertEquals("5", p2.get("name"));
    assertEquals(Integer.valueOf(5), p2.get("age"));
}