AbstractDAOTest.java 文件源码

@BeforeClass
public static void connect() throws DatabaseException {
    factory = Persistence.createEntityManagerFactory(persistencUnitName);
    assertNotNull(factory);
    em = factory.createEntityManager();
    assertNotNull(em);
    tx = em.getTransaction();
    assertNotNull(tx);

       edao.setEntityManager(em);
    tx.begin();
    for (int i = 1; i <= 7; i++) { 
        if (edao.findById(i) == null)
            edao.createEnumeration(i);
    }
    tx.commit();

}