Examples of org.exolab.castor.jdo.Database.load()

org.exolab.castor.jdo.Database.load()
Load an object of the specified type and given identity. Once loaded the object is persistent. Calling this method with the same identity in the same transaction will return the same object. This method is equivalent to a query that returns a single object. If the identity spans on more than one field, all of the identity fields can be wrapped in a Complex object. @param type The object's type @param identity The object's identity @return The object instance. @throws ObjectNotFoundException No object of the given type andidentity was found in persistent storage @throws LockNotGrantedException Timeout or deadlock occuredattempting to acquire a lock on the object @throws TransactionNotInProgressException Method called whiletransaction is not in progress @throws PersistenceException An error reported by thepersistence engine

        long result = System.currentTimeMillis();
        
        int count = 0;
        while (results.hasMore()) {
            OID oid = (OID) results.next();
            db.load(Service.class, oid.getId(), Database.READONLY);
            count++;
        }
        
        long iterate = System.currentTimeMillis();

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        assertEquals("ctf.jdo.tc9x.Laptop", computer.getClass().getName());
        assertEquals(12, computer.getId());
        assertEquals("laptop 12", computer.getName());
        
        database.begin();
        computer = (Computer) database.load(Computer.class, new Integer(12)); 
        database.remove(computer);
        database.remove(database.load (ProductDetail.class, new Integer(12)));
        database.remove(database.load(Order.class, new Integer(12)));
        database.commit();

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        long result = System.currentTimeMillis();
        
        int count = 0;
        while (results.hasMore()) {
            OID oid = (OID) results.next();
            db.load(Service.class, oid.getId(), Database.READONLY);
            count++;
        }
        
        long iterate = System.currentTimeMillis();

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        assertEquals("laptop 12", computer.getName());
        
        database.begin();
        computer = (Computer) database.load(Computer.class, new Integer(12)); 
        database.remove(computer);
        database.remove(database.load (ProductDetail.class, new Integer(12)));
        database.remove(database.load(Order.class, new Integer(12)));
        database.commit();
        
        database.close();
    }

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        database.begin();
        computer = (Computer) database.load(Computer.class, new Integer(12)); 
        database.remove(computer);
        database.remove(database.load (ProductDetail.class, new Integer(12)));
        database.remove(database.load(Order.class, new Integer(12)));
        database.commit();
        
        database.close();
    }

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    public void testLoadComputerMulti() throws Exception {
        Database database = _category.getDatabase();
        
        database.begin();
        ComputerMulti computer = (LaptopMulti) database.load(ComputerMulti.class,
                new Identity(new Integer(1), new Integer(1)));
        database.commit();
        
        assertNotNull(computer);
        assertEquals(1, computer.getId1());

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    public void testLoadTruck() throws Exception {
        Database database = _category.getDatabase();
        
        database.begin();
        Truck truck = (Truck) database.load(Truck.class, new Integer(5));
        database.commit();
        
        assertNotNull(truck);
        assertEquals(5, truck.getId());

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    public void testLoadCar() throws Exception {
        Database database = _category.getDatabase();
        
        database.begin();
        Object object = database.load(Car.class, new Integer(5));
        assertNotNull (object);
        assertEquals ("ctf.jdo.tc9x.Truck", object.getClass().getName());
        Truck truck = (Truck) object; 
        database.commit();

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        truck.setName("truck 11");
        truck.setKw(112);
        truck.setMake("Fiat");
        truck.setMaxWeight(3750);
        truck.setDetail((ProductDetail) 
                database.load(ProductDetail.class, new Integer(11)));
        database.create(truck);
        Collection orders = new LinkedList();
        orders.add(database.load(Order.class, new Integer(11)));
        truck.setOrders(orders);
        database.commit();

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        truck.setMaxWeight(3750);
        truck.setDetail((ProductDetail) 
                database.load(ProductDetail.class, new Integer(11)));
        database.create(truck);
        Collection orders = new LinkedList();
        orders.add(database.load(Order.class, new Integer(11)));
        truck.setOrders(orders);
        database.commit();
        
        database.begin();
        Object object = database.load(Car.class, new Integer(11));

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