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

Example 6 with VBranch

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

the class IndexTest method loadingOrder.

/**
 * This test checks if indexes are loaded in the correct order:
 * oldest should be first, newest come later.
 */
@Test
public void loadingOrder() {
    VCollection persons = _master.getCollection("persons");
    // add two test objects to 'persons' collection
    Map<String, Object> elvis = _factory.createDocument();
    elvis.put("name", "elvis");
    elvis.put("age", "2");
    persons.insert(elvis);
    Map<String, Object> max = _factory.createDocument();
    max.put("name", "max");
    max.put("age", "3");
    persons.insert(max);
    // save commit and objects currently stored in the database
    long first = _master.commit();
    ArrayList<String> beforeInSession = new ArrayList<String>();
    for (Map<String, Object> person : persons.find()) {
        beforeInSession.add(person.toString());
    }
    // change an object and insert it again (i.e. update it)
    elvis.put("age", "4");
    persons.insert(elvis);
    // save commit and objects now stored in the database
    long second = _master.commit();
    ArrayList<String> afterInSession = new ArrayList<String>();
    for (Map<String, Object> person : persons.find()) {
        afterInSession.add(person.toString());
    }
    // checkout old commit and save objects stored in the database
    VBranch oldMaster = _db.checkout(first);
    VCollection oldWells = oldMaster.getCollection("persons");
    ArrayList<String> beforeOutOfSession = new ArrayList<String>();
    for (Map<String, Object> person : oldWells.find()) {
        beforeOutOfSession.add(person.toString());
    }
    // checkout new commit and save objects stored in the database
    VBranch newMaster = _db.checkout(second);
    VCollection newWells = newMaster.getCollection("persons");
    ArrayList<String> afterOutOfSession = new ArrayList<String>();
    for (Map<String, Object> person : newWells.find()) {
        afterOutOfSession.add(person.toString());
    }
    // compare stored objects
    assertArrayEquals(beforeInSession.toArray(), beforeOutOfSession.toArray());
    assertArrayEquals(afterInSession.toArray(), afterOutOfSession.toArray());
}

Example 7 with VBranch

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

the class MongoDBVBranchTest method createBranchAfterConflict.

/**
 * Creates another branch after a conflict has happened
 */
@Test
public void createBranchAfterConflict() {
    VBranch master2 = _db.checkout(VConstants.MASTER);
    putPerson("Max", 3);
    VCollection persons2 = master2.getCollection("persons");
    persons2.insert(_factory.createDocument("name", "Elvis"));
    long masterCid = _master.commit();
    try {
        master2.commit();
        fail("We expect a VException here since the branch's head " + "could not be updated");
    } catch (VException e) {
    // this is what we expect here
    }
    // committing master2 failed, but the commit is still there
    long master2Cid = master2.getHead();
    assertTrue(masterCid != master2Cid);
    _db.createBranch("master2", master2Cid);
    VBranch master = _db.checkout(VConstants.MASTER);
    assertEquals(masterCid, master.getHead());
    master2 = _db.checkout("master2");
    assertEquals(master2Cid, master2.getHead());
}

Example 8 with VBranch

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

the class MongoDBVBranchTest method branch.

/**
 * Creates another branch and tests its isolation against the master branch
 */
@Test
public void branch() {
    putPerson("Peter", 26);
    long peterCid = _master.commit();
    VBranch maxBranch = _db.createBranch("Max", peterCid);
    VCollection maxPersons = maxBranch.getCollection("persons");
    assertEquals(1, maxPersons.find().size());
    maxPersons.insert(_factory.createDocument("name", "Max"));
    long maxCid = maxBranch.commit();
    maxBranch = _db.checkout("Max");
    assertEquals(maxCid, maxBranch.getHead());
    VBranch peterBranch = _db.checkout(VConstants.MASTER);
    assertEquals(peterCid, peterBranch.getHead());
    maxPersons = maxBranch.getCollection("persons");
    VCollection peterPersons = peterBranch.getCollection("persons");
    assertEquals(2, maxPersons.find().size());
    assertEquals(1, peterPersons.find().size());
    assertNotNull(maxPersons.findOne(_factory.createDocument("name", "Max")));
    assertNull(peterPersons.findOne(_factory.createDocument("name", "Max")));
    putPerson("Elvis", 3);
    long elvisCid = _master.commit();
    maxBranch = _db.checkout("Max");
    peterBranch = _db.checkout(VConstants.MASTER);
    assertEquals(maxCid, maxBranch.getHead());
    assertEquals(elvisCid, peterBranch.getHead());
    maxPersons = maxBranch.getCollection("persons");
    peterPersons = peterBranch.getCollection("persons");
    assertEquals(2, maxPersons.find().size());
    assertEquals(2, peterPersons.find().size());
    assertNotNull(maxPersons.findOne(_factory.createDocument("name", "Max")));
    assertNull(peterPersons.findOne(_factory.createDocument("name", "Max")));
    assertNotNull(peterPersons.findOne(_factory.createDocument("name", "Elvis")));
    assertNull(maxPersons.findOne(_factory.createDocument("name", "Elvis")));
}

Example 9 with VBranch

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

the class MongoDBVMaintenanceTest method makeUnreferencedDocuments.

private Object[] makeUnreferencedDocuments() throws InterruptedException {
    long[] r = new long[3];
    putPerson("Max", 6);
    long cid1 = _master.commit();
    putPerson("Brenda", 40);
    _master.commit();
    Map<String, Object> elvis = putPerson("Elvis", 3);
    r[0] = (Long) elvis.get(MongoDBConstants.ID);
    VBranch master2 = _db.createBranch("master2", cid1);
    VCollection persons2 = master2.getCollection("persons");
    persons2.insert(_factory.createDocument("name", "Howard"));
    master2.commit();
    Map<String, Object> fritz = _factory.createDocument("name", "Fritz");
    persons2.insert(fritz);
    r[1] = (Long) fritz.get(MongoDBConstants.ID);
    long stime = System.currentTimeMillis();
    Thread.sleep(500);
    Map<String, Object> david = _factory.createDocument("name", "David");
    persons2.insert(david);
    r[2] = (Long) david.get(MongoDBConstants.ID);
    return new Object[] { r, stime };
}

Example 10 with VBranch

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

the class TreeTest method history.

/**
 * Tests if the history works correctly
 */
@Test
public void history() {
    long root = _master.getHead();
    putPerson("Max", 3);
    long c1 = _master.commit();
    putPerson("Peter", 26);
    long c2 = _master.commit();
    VHistory h = _db.getHistory();
    assertEquals(c1, h.getParent(c2));
    assertEquals(root, h.getParent(c1));
    assertEquals(0, h.getParent(root));
    assertArrayEquals(new long[] { root }, h.getChildren(0));
    assertArrayEquals(new long[] { c1 }, h.getChildren(root));
    assertArrayEquals(new long[] { c2 }, h.getChildren(c1));
    assertArrayEquals(new long[0], h.getChildren(c2));
    VBranch master2 = _db.createBranch("master2", c1);
    VCollection persons = master2.getCollection("persons");
    persons.insert(_factory.createDocument("name", "Elvis"));
    long c3 = master2.commit();
    h = _db.getHistory();
    assertEquals(c1, h.getParent(c2));
    assertEquals(c1, h.getParent(c3));
    assertEquals(root, h.getParent(c1));
    assertEquals(0, h.getParent(root));
    assertArrayEquals(new long[] { root }, h.getChildren(0));
    assertArrayEquals(new long[] { c1 }, h.getChildren(root));
    long[] c1c = h.getChildren(c1);
    assertEquals(2, c1c.length);
    assertTrue((c1c[0] == c2 && c1c[1] == c3) || (c1c[0] == c3 && c1c[1] == c2));
    assertArrayEquals(new long[0], h.getChildren(c2));
    assertArrayEquals(new long[0], h.getChildren(c3));
}