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1. Log out of the site if you are currently logged on. Click on the About Us menu item. Log out of the site if you are currently logged on. Click on the Forums menu item. Click on one of the forum topics that has an existing posting (as indicated in the number of posts field). Read the posting. Click on Add a new forum topic and Create a new topic. Click on the Add a new forum topic link. Enter a subject, select a forum, enter your topic in the body section, and save the item. For the item you just created, create a new comment by entering a subject and comment. Log on to the site. Click on the title of a content item. Click on the Edit tab. Make a small change to the content item and save it.

You are now all finished with the database table and the stored procedures. Once you slow down and think about it, you ll realize that this isn t really hard at all. Now that the stored procedures are changed, it is time to change how they are called. Don t forget, you are still in the DAL (as shown in Figure 7-10). In the Solution Explorer, scroll back up, and open the SqlDataProvider.vb file (see Figure 7-14).

surrounding these life cycle events are now handled through the @PrePersist and @PostPersist interceptor methods.

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In EJB 2.1, ejbLoad() and ejbStore() methods could be called to ensure cache consistency, as in preparation for query operations or prior to flushing an entity bean out to the database. In EJB 3, there is no direct correlation, but clients who call these methods should call EntityManager.refresh() and EntityManager. flush() instead. If the bean provider added custom code to these methods, they may also be annotated with one of the entity life cycle interceptor methods, depending on the specific behavior desired. Persistent relationship fields are identified in EJB 3 entities using the @OneToMany, @ManyToOne, @OneToOne, and @ManyToMany annotations. The new annotations for relationship fields are far more succinct, and are covered in s 3 and 4. In EJB 3, all entities use container-managed persistence, so these properties become obsolete. To emulate bean-managed persistence, you can simply use an ordinary POJO that manages its own data interaction with the database, using JDBC, for example. An entity may have either a simple primary key or a composite primary key. If simple, it is identified using the @Id annotation on the primary key field. This identifies both the primary key class type (the field s type) and the primary key field. If the entity has a composite key, the key class type is identified by the @IdClass annotation on the entity class. If the composite key is embedded, it is identified by the @EmbeddedId annotation. If the composite key is not embedded, then each of the fields that comprise the composite key is defined on the entity class, and each one is annotated @Id.

This code has methods that call the stored procedures you just modified. Since you modified many of the arguments, you need to change this file. The part of the file you need to change is in the Public Methods region. The code is shown in Listing 7-1.

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Listing 4-17. Person.java, an Abstract Mapped Superclass (Non-Entity)

#Region "Public Methods" Public Overrides Function GetTimePunchs(ByVal ModuleId As Integer) _ As IDataReader Return CType(SqlHelper.ExecuteReader(ConnectionString, _ GetFullyQualifiedName("GetTimePunchs"), _ ModuleId), IDataReader) End Function Public Overrides Function GetTimePunch(ByVal ModuleId As Integer, _ ByVal ItemId As Integer) _ As IDataReader Return CType(SqlHelper.ExecuteReader(ConnectionString, _ GetFullyQualifiedName("GetTimePunch"), _ ModuleId,ItemId), IDataReader) End Function Public Overrides Sub AddTimePunch(ByVal ModuleId As Integer, _ ByVal Content As String, _ ByVal UserId As Integer) SqlHelper.ExecuteNonQuery(ConnectionString, _ GetFullyQualifiedName("AddTimePunch"), _ ModuleId, Content, UserId) End Sub Public Overrides Sub UpdateTimePunch(ByVal ModuleId As Integer, _ ByVal ItemId As Integer, _ ByVal Content As String, _ ByVal UserId As Integer) SqlHelper.ExecuteNonQuery(ConnectionString, _ GetFullyQualifiedName("UpdateTimePunch"), _ ModuleId, ItemId, Content, UserId) End Sub Public Overrides Sub DeleteTimePunch(ByVal ModuleId As Integer, _ ByVal ItemId As Integer)

/* * Person: An abstract non-entity mapped superclass */ @MappedSuperclass @SequenceGenerator(name = "PersonIdGenerator", sequenceName = "CH04_MS_PERSON_SEQ", initialValue = 100, allocationSize = 20) public abstract class Person implements Serializable { @Column(name = "FIRST_NAME") private String firstName; @OneToOne(cascade = { CascadeType.ALL }) @JoinColumn(name = "HOME_ADDRESS", referencedColumnName = "ID") private Address homeAddress; @Id @Column(nullable = false) @GeneratedValue(generator="PersonIdGenerator") private Long id; @Column(name = "LAST_NAME") private String lastName; @Version private Long version; public Person() { } /* get/set methods */ }

1. 2. 3.

SqlHelper.ExecuteNonQuery(ConnectionString, _ GetFullyQualifiedName("DeleteTimePunch"), _ ModuleId, ItemId) End Sub #End Region

Listing 4-18. Employee.java, an Abstract Root Entity in a SINGLE_TABLE Entity Inheritance Hierarchy, and a Subclass of a Mapped Superclass

/* * Employee: A root entity in a JOINED inheritance hierarchy, and a subclass * of the mapped superclass Person */ @Entity @Inheritance(strategy = InheritanceType.JOINED) @DiscriminatorColumn(name = "TYPE")

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