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Software Architecture in Java: Design & Development

Develop the Data Access Tier

Explore how to build the data access tier for standalone entities using Hibernate in Java. Understand how to write portable test cases for CRUD operations, including find all records, insert, delete, and update using sessions and transactional methods. Gain practical skills to manage data access effectively with Spring and Hibernate frameworks.

We'll cover the following...

Next, we will look at the data access tier. We will start with a simple structure for the data access test and write the test case for the find all records operation.

Find all records operation

Java
@RunWith( SpringJUnit4ClassRunner.class )

@ContextConfiguration( locations = { "classpath:context.xml" } )

@TransactionConfiguration( defaultRollback = true )

@Transactional

public class ProductDaoImplTest {

  @Autowired

  private ProductDao dao ;



  @Test

  public void testGetAll() {

	Assert.assertEquals(0L, dao.getAll().size());

  }

}

We will see how to write the data access operation for the above test. The @Repository annotation indicates that the class is a data access operation object, which is also eligible for component scanning.

The class level @Transactional annotation shows that all the methods of the class are transactional by ...