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

Example 1 with VCursor

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

the class MongoDBVCollectionTest method find.

/**
 * Tests if one object matching a given example can be retrieved from a collection
 */
@Test
public void find() {
    for (int i = 0; i < 20; ++i) {
        putPerson(String.valueOf(i), i);
    }
    _master.commit();
    VCursor vc = _master.getCollection("persons").find(_factory.createDocument("name", "10"));
    assertEquals(1, vc.size());
    Map<String, Object> p = vc.iterator().next();
    assertEquals("10", p.get("name"));
    assertEquals(Integer.valueOf(10), p.get("age"));
}

Example 2 with VCursor

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

the class MongoDBVCollectionTest method update.

/**
 * Puts a person into the database and then updates his age
 * @param commit true if a commit should be made after the put
 */
private void update(boolean commit) {
    Map<String, Object> p = putPerson("Peter", 26);
    // p has a UID now. alter it and insert it again
    assertNotNull(p.get("uid"));
    // happy birthday, peter!
    p.put("age", 27);
    _master.getCollection("persons").insert(p);
    if (commit) {
        _master.commit();
    }
    // retrieve peter again and check his age
    VCursor vc = _master.getCollection("persons").find(_factory.createDocument("name", "Peter"));
    assertEquals(1, vc.size());
    Map<String, Object> p2 = vc.iterator().next();
    assertDocEquals(p, p2);
}

Example 3 with VCursor

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

the class MongoDBVCollectionTest method lifetimeDeletedOptimization.

/**
 * Tests if lifetime optimization takes effect. Objects that have
 * been deleted should not be loaded but filtered out on the
 * database level already.
 */
@Test
public void lifetimeDeletedOptimization() {
    // insert two documents to skip in-index shortcut
    putPerson("Max", 6);
    putPerson("Pax", 8);
    _master.commit();
    VCollection persons = _master.getCollection("persons");
    VCursor cursor = persons.find();
    DBCursor dbcursor = extractDBCursor(cursor);
    assertEquals(2, cursor.size());
    assertTrue(hasAttachedFilter(cursor));
    assertEquals(2, dbcursor.size());
    putPerson("Elvis", 3);
    _master.commit();
    persons = _master.getCollection("persons");
    cursor = persons.find();
    dbcursor = extractDBCursor(cursor);
    assertEquals(3, cursor.size());
    assertTrue(hasAttachedFilter(cursor));
    assertEquals(3, dbcursor.size());
    persons.delete(_factory.createDocument("name", "Max"));
    _master.commit();
    persons = _master.getCollection("persons");
    cursor = persons.find();
    dbcursor = extractDBCursor(cursor);
    assertEquals(2, cursor.size());
    assertTrue(hasAttachedFilter(cursor));
    assertEquals(2, dbcursor.size());
}

Example 4 with VCursor

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

the class MongoDBVLargeCollectionTest method largeObjectByte.

/**
 * Tests if large objects with byte arrays/streams/buffers can be saved in the database
 * @throws Exception if something goes wrong
 */
@Test
public void largeObjectByte() throws Exception {
    VCollection coll = _master.getLargeCollection("images");
    byte[] test = new byte[1024 * 1024];
    for (int i = 0; i < test.length; ++i) {
        test[i] = (byte) (i & 0xFF);
    }
    Map<String, Object> obj = new HashMap<String, Object>();
    obj.put("name", "Mona Lisa");
    obj.put("data", test);
    coll.insert(obj);
    VCursor vc = coll.find();
    assertEquals(1, vc.size());
    Map<String, Object> obj2 = vc.iterator().next();
    assertEquals("Mona Lisa", obj2.get("name"));
    assertArrayEquals(test, (byte[]) obj2.get("data"));
    ByteArrayInputStream bais = new ByteArrayInputStream(test);
    obj = new HashMap<String, Object>();
    obj.put("name", "Mona Lisa");
    obj.put("data", bais);
    coll.insert(obj);
    Map<String, Object> obj3 = coll.findOne(_factory.createDocument("uid", obj.get("uid")));
    assertEquals("Mona Lisa", obj3.get("name"));
    InputStream is3 = (InputStream) obj3.get("data");
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    byte[] buf = new byte[64 * 1024];
    int read;
    while ((read = is3.read(buf)) > 0) {
        baos.write(buf, 0, read);
    }
    assertArrayEquals(test, baos.toByteArray());
    ByteBuffer bb = ByteBuffer.wrap(test);
    obj = new HashMap<String, Object>();
    obj.put("name", "Mona Lisa");
    obj.put("data", bb);
    coll.insert(obj);
    Map<String, Object> obj4 = coll.findOne(_factory.createDocument("uid", obj.get("uid")));
    assertEquals("Mona Lisa", obj4.get("name"));
    ByteBuffer bb4 = (ByteBuffer) obj4.get("data");
    bb4.rewind();
    byte[] test4 = new byte[bb4.remaining()];
    bb4.get(test4);
    assertArrayEquals(test, test4);
}

Example 5 with VCursor

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

the class MongoDBVLargeCollectionTest method largeObjectFloat.

/**
 * Tests if large objects with float arrays/streams/buffers can be saved in the database
 * @throws Exception if something goes wrong
 */
@Test
public void largeObjectFloat() throws Exception {
    VCollection coll = _master.getLargeCollection("images");
    float[] test = new float[1024 * 1024];
    for (int i = 0; i < test.length; ++i) {
        test[i] = (byte) (i & 0xFF);
    }
    Map<String, Object> obj = new HashMap<String, Object>();
    obj.put("name", "Mona Lisa");
    obj.put("data", test);
    coll.insert(obj);
    VCursor vc = coll.find();
    assertEquals(1, vc.size());
    Map<String, Object> obj2 = vc.iterator().next();
    assertEquals("Mona Lisa", obj2.get("name"));
    assertArrayEquals(test, (float[]) obj2.get("data"), 0.00001f);
    FloatBuffer bb = FloatBuffer.wrap(test);
    obj = new HashMap<String, Object>();
    obj.put("name", "Mona Lisa");
    obj.put("data", bb);
    coll.insert(obj);
    Map<String, Object> obj4 = coll.findOne(_factory.createDocument("uid", obj.get("uid")));
    assertEquals("Mona Lisa", obj4.get("name"));
    FloatBuffer bb4 = (FloatBuffer) obj4.get("data");
    bb4.rewind();
    float[] test4 = new float[bb4.remaining()];
    bb4.get(test4);
    assertArrayEquals(test, test4, 0.00001f);
}