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

org.exolab.castor.jdo.Database.begin()
Begin a new transaction. A transaction must be open in order to query and persist objects. @throws PersistenceException A transaction is already open onthis database, or an error reported by the persistence engine

        order.setId(12);
        order.setName("order 12");
        database.create(order);
        database.commit();


        database.begin();
        ProductDetail detail = new ProductDetail();
        detail.setId(12);
        detail.setCategory("category 12");
        detail.setLocation("location 12");
        database.create(detail);

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        detail.setCategory("category 12");
        detail.setLocation("location 12");
        database.create(detail);
        database.commit();
        
        database.begin();
        Laptop laptop = new Laptop();
        laptop.setId(12);
        laptop.setName("laptop 12");
        laptop.setCpu("centrino");
        laptop.setResolution("1600");

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    public void testReadWriteOidCached() throws Exception {
        long start = System.currentTimeMillis();
        
        Database db =  _jdo.getDatabase();
        db.begin();
        
        long begin = System.currentTimeMillis();
        
        OQLQuery query = db.getOQLQuery(
                "CALL SQL select PTF_SERVICE.ID as ID "

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    public void testReadOnlyOidEmpty() throws Exception {
        long start = System.currentTimeMillis();
        
        Database db =  _jdo.getDatabase();
        db.getCacheManager().expireCache();
        db.begin();
        
        long begin = System.currentTimeMillis();
        
        OQLQuery query = db.getOQLQuery(
                "CALL SQL select PTF_SERVICE.ID as ID "

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        Collection orders = new LinkedList();
        orders.add(database.load(Order.class, new Integer(12)));
        laptop.setOrders(orders);
        database.commit();


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

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        assertNotNull(computer);
        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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    public void testReadOnlyOidCached() throws Exception {
        long start = System.currentTimeMillis();
        
        Database db =  _jdo.getDatabase();
        db.begin();
        
        long begin = System.currentTimeMillis();
        
        OQLQuery query = db.getOQLQuery(
                "CALL SQL select PTF_SERVICE.ID as ID "

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     * Test method.
     * @throws Exception For any exception thrown.
     */
    public void testQueryEntityOne() throws Exception {
        Database db = _category.getDatabase();
        db.begin();
        OQLQuery aquery = db.getOQLQuery(
                "SELECT c FROM " + Container.class.getName() + " c");
        QueryResults aresults = aquery.execute();
        int i = 1;
        while (aresults.hasMore()) {

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    public void testReadOnlyOidOnly() throws Exception {
        long start = System.currentTimeMillis();
        
        Database db =  _jdo.getDatabase();
        db.begin();
        
        long begin = System.currentTimeMillis();
        
        OQLQuery query = db.getOQLQuery(
                "CALL SQL select PTF_SERVICE.ID as ID "

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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);

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