JPA级联持久化对象的事务/回滚行为

Question

我有两个对象Antrag（申请）和Anlage（设施）。一个申请可以用于多个设施。该申请直接存储在数据访问对象（DAO）中。设施是通过级联持久化的。

@Entity
@Table(name = "EEG_ANTRAG")
public class Antrag implements Serializable {
  private static final long serialVersionUID = -2440344011443487714L;

  @Id
  @Column(name = "ANT_ID", nullable = false)
  @SequenceGenerator(name = "sequenceGeneratorAntrag", sequenceName = "EEG_ANTRAG_SEQ", allocationSize = 1)
  @GeneratedValue(generator = "sequenceGeneratorAntrag")
  @Getter @Setter private Long id;

  @OneToMany(mappedBy = "antrag", cascade = { CascadeType.ALL }, orphanRemoval = true)
  @OrderBy("id ASC")
  @Getter private List<Anlage> anlageList = new ArrayList<Anlage>();

  public Anlage addAnlage(Anlage anlage) 
    anlageList.add(anlage);
    anlage.setApplication(this);
    return anlage;
  }

  /* some more simple attributes; just Strings, boolean, .. */
}

@Entity
@Table(name = "EEG_ANLAGE")
public class Anlage implements Serializable {    
  private static final long serialVersionUID = -3940344011443487741L;

  @Id
  @Column(name = "ANL_ID")
  @SequenceGenerator(name = "sequenceGeneratorAnlage", sequenceName = "EEG_ANLAGE_SEQ", allocationSize = 1)
  @GeneratedValue(generator = "sequenceGeneratorAnlage")    
  @Getter @Setter private Long id;

  @ManyToOne
  @JoinColumn(name = "ANL_ANT_ID")
  @Getter @Setter private Antrag antrag;

 /* some more simple attributes; just Strings, boolean, .. */
}

@Stateless
public class AntragDaoBean implements AntragDaoLocal {
  @PersistenceContext(unitName = "ejb-model")
  private EntityManager em;

  @Override
  public void persistAntrag(Antrag antrag) {
    em.persist(antrag);
  }
}

当在插入设施时出现错误（例如实体中存在某列名称的拼写错误）时，会抛出异常。堆栈跟踪指示已执行回滚。问题是，应用程序仍然被持久化。插入应用程序也不应该回滚吗？ 我们正在使用EclipseLink 2.4.1。EclipseLink调试输出表明，所有插入操作都在一个单一事务中执行。数据库为Oracle 11g。 我的事务行为期望值有误吗？如何获得所需的行为？

/* shortened exemplary stacktrace for rollback */
EvaluationException:
  javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:101)
EJBTransactionRolledbackException:
  org.jboss.as.ejb3.tx.CMTTxInterceptor.handleEndTransactionException(CMTTxInterceptor.java:115)
RollbackException:
  com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1177)
DatabaseException:
  org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:324)
SQLSyntaxErrorException:
  oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:445)

- nick

Answer 1

您的期望是正确的：所有内容都应在单个事务中完成，并且Antrag的插入也应该被回滚。

我认为您的持久化单元简单地不是JTA：请在persistence.xml文件中检查是否有如下内容：

<persistence-unit name="ejb-model" transaction-type="JTA">
<jta-data-source>java:/someNameDB</jta-data-source>

- V G

---

peristence.xml 是正确的。但是你的建议让我查看了 JBoss 的 standalone.xml，那里的数据源没有标记为 jta，所以感谢你的帮助，现在它可以工作了。 - nick