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私はHibernateへのJPAインターフェイスを使用しています。データベースからエンティティを読み込んで削除（削除）する簡単なコードを記述しました。エンティティの挿入と更新のためのすべてのマージコールは完全に動作していますが、エンティティを削除しようとすると、Hibernateはデータベースからそのエンティティを削除せず、例外もスローされません。JPA/Hibernate removeエンティティが機能しない
プライマリ方法：（すべてのDAOクラスによって継承されます）
/**
* Accept an invite that was sent to you.
*
* @param inviteId
* @return XML model of the EventMember.
*/
@RequestMapping(value="/invites/accept.rest")
public ModelAndView acceptInvite(@RequestParam final long inviteId) {
final EventInvite invite = eventInviteDAO.find(EventInvite.class, eventInviteId);
EventMember eventMember = new EventMember();
eventMember.setEvent(invite.getEvent());
eventMember.setUser(invite.getUser());
eventMember = eventMemberDAO.store(eventMember);
eventInviteDAO.remove(invite);
return getXMLModelAndView("eventMember", eventMember);
}
AbstractJpaDaoクラス：
public abstract class AbstractJpaDao<T> implements JpaDao<T> {
abstract public EntityManager getEntityManager();
public <T> T find(Class<T> entityClass, Object primaryKey) {
return getEntityManager().find(entityClass, primaryKey);
}
@Transactional(isolation = Isolation.DEFAULT, propagation = Propagation.REQUIRED)
public T store(final T objectToPersist) {
T result = getEntityManager().merge(objectToPersist);
return result;
}
@Transactional(isolation = Isolation.DEFAULT, propagation = Propagation.REQUIRED)
public void remove(final T objectToDelete) {
getEntityManager().remove(objectToDelete);
}
}
EventInviteドメインクラス：
@Entity
@Table(name = "TEventInvite")
public class EventInvite implements Serializable {
private static final long serialVersionUID = 1L;
@Column(name = "EventInviteID", nullable = false)
@Basic(fetch = FetchType.EAGER)
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private long eventInviteId;
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumns({ @JoinColumn(name = "EventID", referencedColumnName = "EventID", nullable = false) })
private Event event;
@Column(name = "Email")
@Basic(fetch = FetchType.EAGER)
private String email;
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "CreateDate", nullable = false)
@Basic(fetch = FetchType.EAGER)
private Calendar createDate;
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumns({ @JoinColumn(name = "UserID", referencedColumnName = "UserID") })
private User user;
public void setEventInviteId(long eventInviteId) {
this.eventInviteId = eventInviteId;
}
public long getEventInviteId() {
return this.eventInviteId;
}
public Event getEvent() {
return event;
}
public void setEvent(Event event) {
this.event = event;
}
public void setEmail(String email) {
this.email = email;
}
public String getEmail() {
return this.email;
}
public void setCreateDate(Calendar createDate) {
this.createDate = createDate;
}
public Calendar getCreateDate() {
return this.createDate;
}
public void setUser(User user) {
this.user = user;
}
public User getUser() {
return user;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((createDate == null) ? 0 : createDate.hashCode());
result = prime * result + ((email == null) ? 0 : email.hashCode());
result = prime * result + ((event == null) ? 0 : event.hashCode());
result = prime * result + ((user == null) ? 0 : user.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
EventInvite other = (EventInvite) obj;
if (createDate == null) {
if (other.createDate != null)
return false;
} else if (!createDate.equals(other.createDate))
return false;
if (email == null) {
if (other.email != null)
return false;
} else if (!email.equals(other.email))
return false;
if (event == null) {
if (other.event != null)
return false;
} else if (!event.equals(other.event))
return false;
if (user == null) {
if (other.user != null)
return false;
} else if (!user.equals(other.user))
return false;
return true;
}
}
問題の内容やデバッグ方法についてのアイデアはありますか？
することでこれを解決しました* DaoMgr * s）。それは不必要に問題の理解を複雑にするので上記のあなたの例でそれを訂正するとよいでしょう。 –