同步异常期间级联PERSIST

时间：2013-04-26 10:43:25

标签： java eclipselink cascade

尝试持久保存新实体时遇到问题。我使用Eclipselink 2.4.2作为实体管理器。存储方法中的我的BaseDao类在将其保持为新（persist-＆gt; flush-＆gt; refresh）之后刷新并刷新实体。一切都发生在一次交易中。

我的实体看起来像这样（我关注的部分）：

TrustEntity {
    @OneToMany(fetch = FetchType.LAZY, mappedBy = "trust", cascade = {CascadeType.ALL})
    @PrivateOwned
    private List<TrustIncentiveRateEntity> trustIncentiveRates;
}

TrustIncentiveRateEntity {
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "TRUST_ID", nullable = false)
    private TrustEntity trust;

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "trustIncentiveRate", cascade = {CascadeType.ALL})
    @PrivateOwned
    private List<TrustIncentiveRateValueEntity> trustIncentiveRateValues;
}

TrustIncentiveRateValueEntity {
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "TRUST_INCENTIVE_RATE_ID", nullable = false)
    private TrustIncentiveRateEntity trustIncentiveRate;
}

我正在创建一个新的Trust实体，实例化一个TrustIncentiveRateEntity列表，在其中创建一个新元素，实例化一个TrustIncentiveRateEntity并在其中创建一个新元素。 在调试过程中，我可以看到所有引用都是正确的。

现在，当我试图坚持这里时会发生什么：

从服务器登录：

FINE: SELECT SEQ_TRUST.NEXTVAL FROM DUAL

FINE: SELECT SEQ_TRUST_INCENTIVE_RATE.NEXTVAL FROM DUAL

FINE: SELECT SEQ_TRUST_INCENTIVE_RATE_VALUE.NEXTVAL FROM DUAL

FINE: INSERT INTO TRUST (TRUST_ID, ACTION_DATE, ACTION_USER_ID, IS_ACTIVE, CREATION_DATE, CREATION_USER_ID, IS_INCENTIVE_ACTIVE, IS_NO_CREDIT_LIMIT, PROCESS_CURRENT_STATUS, REMARKS, STATUS_INCENTIVE, TRUST_CODE, TRUST_NAME, TRUST_TYPE, UPDATE_DATE, UPDATE_USER_ID, VERSION_OPT_LOCK, STRUCTURAL_ORG_UNIT_SALES_ID, STRUCTURAL_ORG_UNIT_ID, USER_ID) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
    bind => [38007, 2013-04-26 09:46:31.582, 1003186, true, 2013-04-26 07:46:34.659, 1003186, true, false, OPEN, null, OPEN, 100058, 741963852, T, null, null, 1, 387, 387, 1003186]

FINE: INSERT INTO TRUST_INCENTIVE_RATE (TRUST_INCENTIVE_RATE_ID, CREATION_DATE, CREATION_USER_ID, EQUIPMENT_SIZE, EXTENDED_EQ_GROUP_ID, RATE_BASIS, UPDATE_DATE, UPDATE_USER_ID, VERSION_OPT_LOCK, TRADE_ID, TRUST_ID) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
    bind => [15001, 2013-04-26 07:46:39.862, 1003186, 20, 2, B, null, null, 1, 144001, 38007]

FINE: INSERT INTO TRUST_INCENTIVE_RATE_VALUE (TRUST_INCENTIVE_RATE_VALUE_ID, CREATION_DATE, CREATION_USER_ID, EFFECTIVE_DATE, EXPIRY_DATE, INCENTIVE, STATUS, UPDATE_DATE, UPDATE_USER_ID, VERSION_OPT_LOCK, CURRENCY_CODE, TRUST_INCENTIVE_RATE_ID) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
    bind => [14007, 2013-04-26 07:46:39.955, 1003186, 2013-04-26 00:00:00.0, 9999-12-31 00:00:00.0, 12, OPEN, null, null, 1, USD, 15001]

FINE: SELECT TRUST_ID, ACTION_DATE, ACTION_USER_ID, IS_ACTIVE, CREATION_DATE, CREATION_USER_ID, IS_INCENTIVE_ACTIVE, IS_NO_CREDIT_LIMIT, PROCESS_CURRENT_STATUS, REMARKS, STATUS_INCENTIVE, TRUST_CODE, TRUST_NAME, TRUST_TYPE, UPDATE_DATE, UPDATE_USER_ID, VERSION_OPT_LOCK, STRUCTURAL_ORG_UNIT_SALES_ID, STRUCTURAL_ORG_UNIT_ID, USER_ID FROM TRUST WHERE (TRUST_ID = ?)
    bind => [38007]

FINE: SELECT TRUST_INCENTIVE_RATE_ID, CREATION_DATE, CREATION_USER_ID, EQUIPMENT_SIZE, EXTENDED_EQ_GROUP_ID, RATE_BASIS, UPDATE_DATE, UPDATE_USER_ID, VERSION_OPT_LOCK, TRADE_ID, TRUST_ID FROM TRUST_INCENTIVE_RATE WHERE (TRUST_ID = ?)
    bind => [38007]

FINE: SELECT TRUST_INCENTIVE_RATE_VALUE_ID, CREATION_DATE, CREATION_USER_ID, EFFECTIVE_DATE, EXPIRY_DATE, INCENTIVE, STATUS, UPDATE_DATE, UPDATE_USER_ID, VERSION_OPT_LOCK, CURRENCY_CODE, TRUST_INCENTIVE_RATE_ID FROM TRUST_INCENTIVE_RATE_VALUE WHERE (TRUST_INCENTIVE_RATE_ID = ?)
    bind => [15001]

到目前为止一切顺利，但当事务由EntityManager提交时，我得到以下异常：

WARNING: java.lang.IllegalStateException: During synchronization a new object was found through a relationship that was not marked cascade PERSIST: my.package.entity.TrustIncentiveRateEntity@1fa1df7.
 at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.discoverUnregisteredNewObjects(RepeatableWriteUnitOfWork.java:303)
 at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.calculateChanges(UnitOfWorkImpl.java:706)
 at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabaseWithChangeSet(UnitOfWorkImpl.java:1498)
 at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.issueSQLbeforeCompletion(UnitOfWorkImpl.java:3151)
 at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.issueSQLbeforeCompletion(RepeatableWriteUnitOfWork.java:345)
 at org.eclipse.persistence.transaction.AbstractSynchronizationListener.beforeCompletion(AbstractSynchronizationListener.java:158)
 at org.eclipse.persistence.transaction.JTASynchronizationListener.beforeCompletion(JTASynchronizationListener.java:68)
 at com.sun.enterprise.transaction.JavaEETransactionImpl.commit(JavaEETransactionImpl.java:435)
 at com.sun.enterprise.transaction.JavaEETransactionManagerSimplified.commit(JavaEETransactionManagerSimplified.java:855)
 at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5136)
 at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4901)
 at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2045)
 at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1994)
 at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:222)
 at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
 at $Proxy241.save(Unknown Source)

对我来说这似乎很奇怪，就像EM试图在TrustIncentiveRateEntity之前实际存储TrustIncentiveRateValueEntity而无法看到TrustIncentiveRateEntity。 在查看类似的线程后，我将CascadeType.PERSIST添加到TrustIncentiveRateValueEntity类中trustIncentiveRate字段的@ManyToOne注释中。之后情况看起来像这样：EM像之前那样插入实体，然后它从SEQ_TRUST_INCENTIVE_RATE获取nextval并尝试再次插入TrustIncentiveRateValueEntity（使用新的id，但其余的字段值保持不变）。它会导致约束违规，因为我对某些表列的横截面有一个独特的约束。例外，交易回滚，我仍然很难过。

我在BaseDao类中的商店方法：

@TransactionAttribute(TransactionAttributeType.MANDATORY)
public T_ENTITY store(T_ENTITY entity) {
    if (!entity.isNewlyCreated()) {
        T_ENTITY mergedEntity = em.merge(entity);
        flush();
        return mergedEntity;
    } else {
        try {
            em.persist(entity);
            flush();
            refresh();
        } catch (RuntimeException exc) {
            entity.resetPersistentFlag();
             throw exc;
        }
        return entity;
    }
}

但直接调用em.persist（实体），没有刷新/刷新会导致同样的问题。

服务电话的逻辑：

@Override
@TransactionAttribute(TransactionAttributeType.REQUIRED)
public TrustEntity save(TrustEntity dto) {
    TrustEntity  trust = trustDao.store(trust);

    workflowConversation.triggerWorkflow(); // doesn't do anything to any of the entities when they are freshly created

    return trust;
}

任何人都可以帮我确定这可能有什么问题吗？

1 个答案:

答案 0 :(得分：0)

您不能拥有同时使用mappedby的OneToMany，使其成为双向，以及将其标记为单向的joincolumn。它们发生冲突并导致问题。

当您将关系标记为mappedby时，您指定关系的所有信息和控制都在另一侧 - 包括joincolumn信息。试试：

TrustEntity {
    @OneToMany(fetch = FetchType.LAZY, mappedBy = "trust", cascade = {CascadeType.ALL})
    @PrivateOwned
    private List<TrustIncentiveRateEntity> trustIncentiveRates;
}

TrustIncentiveRateEntity {
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "TRUST_ID", nullable = false)
    private TrustEntity trust;

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "trustIncentiveRate", cascade = {CascadeType.ALL})
    @PrivateOwned
    private List<TrustIncentiveRateValueEntity> trustIncentiveRateValues;
}
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