我的會話bean不會在管理實體上執行更新。未能在Eclipselink上合併日期
我已經包含了相關類的代碼。當我通過使用prime faces schedule組件修改事件的日期字段並將修改後的實體傳遞給會話bean並調用em.merge(event)時,實體管理器不會嘗試更新實體,並且沒有在數據庫。
會話Bean
@Stateless
@LocalBean
public class CalendarSessionBean implements Serializable {
@PersistenceContext
private EntityManager em;
public void moveEvent (CalendarEvent event) {
em.merge(event);
Logger.getLogger("example").log(Level.INFO, "Moved {0}", event.getStartDate());
}
}
實體Bean
@Entity
public class CalendarEvent implements Serializable {
@Id
private Long id;
@PrePersist
@PreUpdate
void onUpdate() { // Never called
Logger.getLogger("example").log(Level.INFO, "Updating event on the {0}", this.getStartDate());
}
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "DTE_STR", nullable = false)
@NotNull
private Date start; // Column that sould update
// ... rest omitted
}
JSF Managed Bean的
@ManagedBean(name="agenda")
@ViewScoped
public class AgendaMBean implements Serializable {
@EJB CalendarSessionBean calendarSession;
public ScheduleModel getModel() {
if (model == null) {
model = new DefaultScheduleModel();
final Collection<CalendarEvent> calendarEvents = calendarSession.findAll();
for (final CalendarEvent calendarEvent : calendarEvents) {
Log.log(Level.FINEST, "Adding to model the {0}", calendarEvent.getStartDate());
final DefaultScheduleEvent event = new DefaultScheduleEvent();
event.setId(String.valueOf(calendarEvent.getId()));
event.setStartDate(calendarEvent.getStart());
event.setData(calendarEvent);
model.addEvent(event);
}
}
return model;
}
public void onEventMove (final ScheduleEntryMoveEvent event) {
final CalendarEvent calendarEvent =
(CalendarEvent) event.getScheduleEvent().getData();
Log.log(Level.FINEST, "Moving event to {0}", calendarEvent.getStartDate());
calendarSession.moveEvent(calendarEvent);
}
}
JSF的facelet
<p:schedule value="#{agenda.model}">
<p:ajax event="eventMove"
listener="#{agenda.onEventMove}"/>
</p:schedule>
輸出
Adding to model the Fri Feb 03 00:00:00 CET 2012 // ManagedBean.getModel()
Moving event to Wed Feb 08 00:00:00 CET 2012 // ManagedBean.onEventMove()
Moved Wed Feb 08 00:00:00 CET 2012 // SessionBean.move()
// No PrePersist log statement
開:
- EJB 3
- JPA 2的EclipseLink
- JTA連接到MySQL通過Glassfish的3
- JSF管理2
- Primefaces 3
SOLUTION:
按照詹姆斯的答案,問題在於EclipseLink的治療顳領域。
鏈接:http://wiki.eclipse.org/Using_EclipseLink_JPA_Extensions_(ELUG)#How_to_Use_the_.40Mutable_Annotation
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "DTE_STR", nullable = false)
@Mutable(true) // Solution
@NotNull
private Date start;
你可以添加DefaultScheduleModel的定義嗎? – perissf 2012-02-28 08:38:30
@perissf http://www.dzeek.net/javadoc/primefacesdocs/org/primefaces/model/DefaultScheduleModel.html – klonq 2012-02-28 08:42:22
謝謝。我看到calendarSession.move(calendarEvent),但在CalendarSessionBean中有moveEvent。如何在AgendaMBean中獲取calendarSession?你有什麼異常嗎? – perissf 2012-02-28 08:58:57