Examples with PersistenceManager javax.jdo.PersistenceManager used on opensource projects

Example 86 with PersistenceManager

use of javax.jdo.PersistenceManager in project tests by datanucleus.

the class ApplicationIdPersistenceTest method testAccessJdoConnection.

public void testAccessJdoConnection() throws Exception {
    try {
        PersistenceManager pm = pmf.getPersistenceManager();
        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();
            Person p = new Person();
            p.setPersonNum(1);
            p.setGlobalNum("1");
            p.setFirstName("Bugs");
            p.setLastName("Bunny");
            Person p2 = new Person();
            p2.setPersonNum(2);
            p2.setGlobalNum("2");
            p2.setFirstName("My");
            p2.setLastName("Friend");
            pm.makePersistent(p);
            pm.makePersistent(p2);
            JDOConnection conn = pm.getDataStoreConnection();
            assertTrue("Native connection should be instanceof com.mongodb.DB!", conn.getNativeConnection() instanceof DB);
            conn.close();
            tx.commit();
        } catch (Exception e) {
            LOG.error("Exception during persist with connection access", e);
            fail("Exception thrown when running test " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
    } finally {
        clean(Person.class);
    }
}

Example 87 with PersistenceManager

use of javax.jdo.PersistenceManager in project tests by datanucleus.

the class DatastoreIdPersistenceTest method testInsertOneToOneBidirWithIdentity.

public void testInsertOneToOneBidirWithIdentity() throws Exception {
    try {
        PersistenceManager pm = pmf.getPersistenceManager();
        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();
            Boiler boiler = new Boiler("Vaillant", "Superwarm");
            Timer timer = new Timer("Casio", true, boiler);
            boiler.setTimer(timer);
            pm.makePersistent(timer);
            tx.commit();
        } catch (Throwable thr) {
            LOG.error("Exception during persist", thr);
            fail("Exception thrown when running test " + thr.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
    } finally {
        clean(Timer.class);
        clean(Boiler.class);
    }
}

Example 88 with PersistenceManager

use of javax.jdo.PersistenceManager in project tests by datanucleus.

the class EmbeddedTest method testEmbeddedMap.

/**
 * Test for Map with embedded value object.
 * @throws Exception
 */
public void testEmbeddedMap() throws Exception {
    try {
        PersistenceManager pm = pmf.getPersistenceManager();
        Transaction tx = pm.currentTransaction();
        // ------------------ Check the persistence of an object with an embedded map -----------------
        Object libraryId = null;
        try {
            tx.begin();
            Film film1 = new Film("ET", "Steven Spielberg", "Extra-terrestrial nonsense");
            Film film2 = new Film("Los diarios del motociclista", "Walter Salles", "Journey of Che Guevara");
            FilmLibrary library = new FilmLibrary("Mr Blockbuster");
            library.addFilm("ET", film1);
            library.addFilm("Motorcycle Diaries", film2);
            pm.makePersistent(library);
            // Access the object containing the embedded object before commit
            // This tries to go to the DB if our object isn't marked as embedded.
            assertEquals("Number of films is not correct", 2, library.getNumberOfFilms());
            tx.commit();
            libraryId = pm.getObjectId(library);
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while creating objects with embedded field(s) : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        pmf.getDataStoreCache().evictAll();
        // Retrieve the Library and the films
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            FilmLibrary library = (FilmLibrary) pm.getObjectById(libraryId);
            // Check "contains"
            assertTrue("Library says that it doesnt contain the ET but it should", library.containsFilm("ET"));
            assertFalse("Library says that it contains Independence Day but doesnt", library.containsFilm("Independence Day"));
            // Check retrieval of films
            Collection films = library.getFilms();
            assertTrue("No films retrieved from calling getFilms()!", films != null);
            assertEquals("Number of films retrieved from calling getFilms() is incorrect", 2, films.size());
            Film film1 = library.getFilm("ET");
            assertTrue("ET was not returned by getFilm!", film1 != null);
            assertEquals("ET has wrong name", "ET", film1.getName());
            assertEquals("ET has wrong director", "Steven Spielberg", film1.getDirector());
            Film film2 = library.getFilm("Motorcycle Diaries");
            assertTrue("Motorcycle Diaries was not returned by getFilm!", film2 != null);
            assertEquals("Motorcycle Diaries has wrong name", "Los diarios del motociclista", film2.getName());
            assertEquals("Motorcycle Diaries has wrong director", "Walter Salles", film2.getDirector());
            // Remove "ET" since nobody wants to see it :-)
            library.removeFilm("ET");
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while retrieving objects with embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Check that the film was removed
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            FilmLibrary library = (FilmLibrary) pm.getObjectById(libraryId);
            // Check retrieval of films
            Collection films = library.getFilms();
            assertTrue("No films retrieved from calling getFilms()!", films != null);
            assertEquals("Number of films retrieved from calling getFilms() is incorrect", 1, films.size());
            Film film1 = library.getFilm("ET");
            assertTrue("ET was returned by getFilm!", film1 == null);
            Film film2 = library.getFilm("Motorcycle Diaries");
            assertTrue("Motorcycle Diaries was not returned by getFilm!", film2 != null);
            assertEquals("Motorcycle Diaries has wrong name", "Los diarios del motociclista", film2.getName());
            assertEquals("Motorcycle Diaries has wrong director", "Walter Salles", film2.getDirector());
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while retrieving objects with embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Add a new film to the library
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            FilmLibrary library = (FilmLibrary) pm.getObjectById(libraryId);
            Film film3 = new Film("Star Wars Episode IV", "George Lucas", "War between the Jedi and the Sith");
            library.addFilm("Star Wars", film3);
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while adding objects to embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Check that the film was added
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            FilmLibrary library = (FilmLibrary) pm.getObjectById(libraryId);
            // Check retrieval of films
            Collection films = library.getFilms();
            assertTrue("No films retrieved from calling getFilms()!", films != null);
            assertEquals("Number of films retrieved from calling getFilms() is incorrect", 2, films.size());
            Film film2 = library.getFilm("Motorcycle Diaries");
            assertTrue("Motorcycle Diaries was not returned by getFilm!", film2 != null);
            assertEquals("Motorcycle Diaries has wrong name", "Los diarios del motociclista", film2.getName());
            assertEquals("Motorcycle Diaries has wrong director", "Walter Salles", film2.getDirector());
            Film film3 = library.getFilm("Star Wars");
            assertTrue("Star Wars was not returned by getFilm!", film3 != null);
            assertEquals("Star Wars has wrong name", "Star Wars Episode IV", film3.getName());
            assertEquals("Star Wars has wrong director", "George Lucas", film3.getDirector());
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while retrieving objects with embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Update a film in the library
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            FilmLibrary library = (FilmLibrary) pm.getObjectById(libraryId);
            Film film = library.getFilm("Star Wars");
            LOG.info(">> Updating name of film StarWars state=" + JDOHelper.getObjectState(film));
            film.setName("Star Wars Episode IV : A New Hope");
            LOG.info(">> Updated name of film StarWars state=" + JDOHelper.getObjectState(film));
            tx.commit();
            LOG.info(">> Updated name of film StarWars ?");
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while updating objects in embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Check that the film was updated
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        FilmLibrary detachedLibrary = null;
        try {
            tx.begin();
            LOG.info(">> Retrieving films");
            pm.getFetchPlan().addGroup("film_all");
            FilmLibrary library = (FilmLibrary) pm.getObjectById(libraryId);
            // Check retrieval of films
            Collection films = library.getFilms();
            assertTrue("No films retrieved from calling getFilms()!", films != null);
            assertEquals("Number of films retrieved from calling getFilms() is incorrect", 2, films.size());
            LOG.info(">> Correctly retrieved 2 films");
            Film film3 = library.getFilm("Star Wars");
            assertTrue("Star Wars was not returned by getFilm!", film3 != null);
            assertEquals("Star Wars has wrong name", "Star Wars Episode IV : A New Hope", film3.getName());
            assertEquals("Star Wars has wrong director", "George Lucas", film3.getDirector());
            detachedLibrary = (FilmLibrary) pm.detachCopy(library);
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while retrieving objects with embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Update the detached object, adding a new film
        detachedLibrary.addFilm("Kamchatka", new Film("Kamchatka", "Marcelo Py�eiro", "Darkest part of Argentinian history told through the eyeys of a child"));
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            FilmLibrary library = (FilmLibrary) pm.makePersistent(detachedLibrary);
            Collection films = library.getFilms();
            assertTrue("No films retrieved from calling getFilms() on attached object!", films != null);
            assertEquals("Number of films retrieved from calling getFilms() on attached object is incorrect", 3, films.size());
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while attaching objects with embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Check that the film was attached
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            FilmLibrary library = (FilmLibrary) pm.getObjectById(libraryId);
            // Check retrieval of films
            Collection films = library.getFilms();
            assertTrue("No films retrieved from calling getFilms()!", films != null);
            assertEquals("Number of films retrieved from calling getFilms() is incorrect", 3, films.size());
            Film film3 = library.getFilm("Kamchatka");
            assertTrue("Kamchatka was not returned by getFilm!", film3 != null);
            assertEquals("Kamchatka has wrong name", "Kamchatka", film3.getName());
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while retrieving objects with embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
    } finally {
        // Clean out our data
        clean(FilmLibrary.class);
    }
}

Example 89 with PersistenceManager

use of javax.jdo.PersistenceManager in project tests by datanucleus.

the class EmbeddedTest method testEmbeddedCollectionWithReferenceToUnembedded.

public void testEmbeddedCollectionWithReferenceToUnembedded() {
    try {
        PersistenceManager pm = pmf.getPersistenceManager();
        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();
            Video vid1 = new Video();
            vid1.setIdVideo(456L);
            vid1.setVideoTitle("Inception");
            Video vid2 = new Video();
            vid2.setIdVideo(789L);
            vid2.setVideoTitle("The Matrix");
            Video vid3 = new Video();
            vid3.setIdVideo(123L);
            vid3.setVideoTitle("Saving Private Ryan");
            LibraryUser user1 = new LibraryUser();
            user1.setName("Andy");
            user1.getViewedVideos().add(new ViewedVideo(vid1));
            user1.getViewedVideos().add(new ViewedVideo(vid2));
            LibraryUser user2 = new LibraryUser();
            user2.setName("Chris");
            user2.getViewedVideos().add(new ViewedVideo(vid1));
            user2.getViewedVideos().add(new ViewedVideo(vid2));
            user2.getViewedVideos().add(new ViewedVideo(vid3));
            // Persist all elements :
            pm.makePersistentAll(user1, user2);
            tx.commit();
        } catch (Throwable thr) {
            LOG.error(">> Exception in persist", thr);
            fail("Exception in persist of data : " + thr.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Query the data
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            Query q = pm.newQuery("SELECT FROM " + LibraryUser.class.getName() + " ORDER BY name");
            List<LibraryUser> users = (List<LibraryUser>) q.execute();
            assertEquals("Number of users is wrong", 2, users.size());
            LibraryUser user1 = users.get(0);
            assertNotNull(user1);
            assertEquals("Andy", user1.getName());
            Set<ViewedVideo> vids1 = user1.getViewedVideos();
            assertNotNull(vids1);
            assertEquals(2, vids1.size());
            boolean vid1Present = false;
            boolean vid2Present = false;
            boolean vid3Present = false;
            for (ViewedVideo vid : vids1) {
                if (vid.getVideo().getIdVideo() == 456) {
                    vid1Present = true;
                } else if (vid.getVideo().getIdVideo() == 789) {
                    vid2Present = true;
                } else if (vid.getVideo().getIdVideo() == 123) {
                    vid3Present = true;
                }
            }
            assertTrue(vid1Present);
            assertTrue(vid2Present);
            assertFalse(vid3Present);
            LibraryUser user2 = users.get(1);
            assertNotNull(user2);
            assertEquals("Chris", user2.getName());
            Set<ViewedVideo> vids2 = user2.getViewedVideos();
            assertNotNull(vids2);
            assertEquals(3, vids2.size());
            vid1Present = false;
            vid2Present = false;
            vid3Present = false;
            for (ViewedVideo vid : vids2) {
                if (vid.getVideo().getIdVideo() == 456) {
                    vid1Present = true;
                } else if (vid.getVideo().getIdVideo() == 789) {
                    vid2Present = true;
                } else if (vid.getVideo().getIdVideo() == 123) {
                    vid3Present = true;
                }
            }
            assertTrue(vid1Present);
            assertTrue(vid2Present);
            assertTrue(vid3Present);
            tx.commit();
        } catch (Throwable thr) {
            LOG.error(">> Exception in query", thr);
            fail("Exception in query of data : " + thr.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
    } finally {
        PersistenceManager pm = pmf.getPersistenceManager();
        Collection<Object> toDelete;
        Query qVideo = pm.newQuery(Video.class);
        Query qUser = pm.newQuery(LibraryUser.class);
        toDelete = new ArrayList<Object>((Collection<Object>) qVideo.execute());
        toDelete.addAll(new ArrayList<Object>((Collection<Object>) qUser.execute()));
        pm.deletePersistentAll(toDelete);
        pm.close();
    }
}

Example 90 with PersistenceManager

use of javax.jdo.PersistenceManager in project tests by datanucleus.

the class EmbeddedTest method testEmbeddedCollection.

/**
 * Test for an embedded PC object.
 * @throws Exception
 */
public void testEmbeddedCollection() throws Exception {
    try {
        PersistenceManager pm = pmf.getPersistenceManager();
        Transaction tx = pm.currentTransaction();
        // ------------------ Check the persistence of an object with embedded collection -----------------
        Object networkId = null;
        try {
            tx.begin();
            Network network = new Network("Local Area Net");
            Device device1 = new Device("Printer", "192.168.0.2", "HP LaserJet", network);
            Device device2 = new Device("Audio Server", "192.168.0.3", "SLiMP3", network);
            Device device3 = new Device("Mail Server", "192.168.0.4", "Office IMAP", network);
            network.addDevice(device1);
            network.addDevice(device2);
            network.addDevice(device3);
            pm.makePersistent(network);
            // Access the object containing the embedded object before commit
            // This tries to go to the DB if our object isn't marked as embedded.
            assertEquals("Number of devices is not correct", 3, network.getNumberOfDevices());
            tx.commit();
            networkId = pm.getObjectId(network);
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while creating objects with embedded field(s) : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        pmf.getDataStoreCache().evictAll();
        // Retrieve the Network and the devices
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            Network net = (Network) pm.getObjectById(networkId);
            // Check "contains"
            assertTrue("Network says that it doesnt contain the Audio Server but it should", net.containsDevice(new Device("Audio Server", "192.168.0.3", "SLiMP3", null)));
            assertFalse("Network says that it contains the Printer on an incorrect IP address but doesnt", net.containsDevice(new Device("Printer", "192.168.0.3", "HP LaserJet", null)));
            // Check retrieval of devices
            Device[] devices = net.getDevices();
            assertTrue("No devices retrieved from calling getDevices()!", devices != null);
            assertEquals("Number of devices retrieved from calling getDevices() is incorrect", 3, devices.length);
            Device printerDevice = null;
            Device audioDevice = null;
            Device mailDevice = null;
            for (int i = 0; i < devices.length; i++) {
                Device dev = devices[i];
                if (dev.getName().equals("Audio Server")) {
                    audioDevice = dev;
                } else if (dev.getName().equals("Printer")) {
                    printerDevice = dev;
                } else if (dev.getName().equals("Mail Server")) {
                    mailDevice = dev;
                }
            }
            assertTrue("Audio device was not returned by getDevices!", audioDevice != null);
            assertTrue("Printer device was not returned by getDevices!", printerDevice != null);
            assertTrue("Mail device was not returned by getDevices!", mailDevice != null);
            assertEquals("Audio Server has incorrect IP address", "192.168.0.3", audioDevice.getIPAddress());
            assertEquals("Printer has incorrect IP address", "192.168.0.2", printerDevice.getIPAddress());
            assertEquals("Mail Server has incorrect IP address", "192.168.0.4", mailDevice.getIPAddress());
            assertTrue("Audio device has no owner network assigned", audioDevice.getNetwork() != null);
            assertEquals("Audio device has incorrect network assigned", "Local Area Net", audioDevice.getNetwork().getName());
            // Remove the "Mail Server"
            net.removeDevice(mailDevice);
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while retrieving objects with embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Check that the mail server is removed from the datastore
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            Network net = (Network) pm.getObjectById(networkId);
            // Check "contains"
            assertTrue("Network says that it contains the Mail Server but it shouldnt", !net.containsDevice(new Device("Mail Server", "192.168.0.4", "Office IMAP", null)));
            // Check retrieval of devices
            Device[] devices = net.getDevices();
            assertTrue("No devices retrieved from calling getDevices()!", devices != null);
            assertEquals("Number of devices retrieved from calling getDevices() is incorrect", 2, devices.length);
            Device printerDevice = null;
            Device audioDevice = null;
            for (int i = 0; i < devices.length; i++) {
                Device dev = devices[i];
                if (dev.getName().equals("Audio Server")) {
                    audioDevice = dev;
                } else if (dev.getName().equals("Printer")) {
                    printerDevice = dev;
                }
            }
            assertTrue("Audio device was not returned by getDevices!", audioDevice != null);
            assertTrue("Printer device was not returned by getDevices!", printerDevice != null);
            assertEquals("Audio Server has incorrect IP address", "192.168.0.3", audioDevice.getIPAddress());
            assertEquals("Printer has incorrect IP address", "192.168.0.2", printerDevice.getIPAddress());
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while retrieving objects with embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Add a device to the retrieved Network
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            Network net = (Network) pm.getObjectById(networkId);
            // Add a "DB server"
            Device dbServer = new Device("DB Server", "192.168.0.10", "MySQL 4.0", net);
            net.addDevice(dbServer);
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while adding object to embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Check that the DB server is added to the datastore
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            Network net = (Network) pm.getObjectById(networkId);
            // Check retrieval of devices
            Device[] devices = net.getDevices();
            assertTrue("No devices retrieved from calling getDevices()!", devices != null);
            assertEquals("Number of devices retrieved from calling getDevices() is incorrect", 3, devices.length);
            Device dbDevice = null;
            for (int i = 0; i < devices.length; i++) {
                Device dev = devices[i];
                if (dev.getName().equals("DB Server")) {
                    dbDevice = dev;
                }
            }
            assertTrue("DB Server was not returned by getDevices!", dbDevice != null);
            assertEquals("DB Server has incorrect IP address", "192.168.0.10", dbDevice.getIPAddress());
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while retrieving objects with embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Update an embedded element and check that the update gets to the DB
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            Network net = (Network) pm.getObjectById(networkId);
            Device[] devices = net.getDevices();
            Device audioDevice = null;
            for (int i = 0; i < devices.length; i++) {
                Device dev = devices[i];
                if (dev.getName().equals("Audio Server")) {
                    audioDevice = dev;
                    break;
                }
            }
            // Change the IP address of our printer
            audioDevice.setIPAddress("192.168.1.20");
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while updating embedded objects stored in container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
        // Check that the audio server has been updated in the datastore
        pm = pmf.getPersistenceManager();
        tx = pm.currentTransaction();
        try {
            tx.begin();
            Network net = (Network) pm.getObjectById(networkId);
            Device[] devices = net.getDevices();
            assertTrue("No devices retrieved from calling getDevices()!", devices != null);
            assertEquals("Number of devices retrieved from calling getDevices() is incorrect", 3, devices.length);
            Device printerDevice = null;
            Device audioDevice = null;
            Device dbDevice = null;
            for (int i = 0; i < devices.length; i++) {
                Device dev = devices[i];
                if (dev.getName().equals("Audio Server")) {
                    audioDevice = dev;
                } else if (dev.getName().equals("Printer")) {
                    printerDevice = dev;
                } else if (dev.getName().equals("DB Server")) {
                    dbDevice = dev;
                }
            }
            assertTrue("Audio device was not returned by getDevices!", audioDevice != null);
            assertTrue("Printer device was not returned by getDevices!", printerDevice != null);
            assertTrue("DB device was not returned by getDevices!", dbDevice != null);
            assertEquals("Audio Server has incorrect IP address", "192.168.1.20", audioDevice.getIPAddress());
            assertEquals("Printer has incorrect IP address", "192.168.0.2", printerDevice.getIPAddress());
            assertEquals("DB Server has incorrect IP address", "192.168.0.10", dbDevice.getIPAddress());
            tx.commit();
        } catch (Exception e) {
            LOG.error(">> Exception in test", e);
            fail("Exception thrown while retrieving updated objects with embedded container : " + e.getMessage());
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            pm.close();
        }
    } finally {
        // Clean out created data
        clean(Network.class);
    }
}