java - 保存具有复杂关系的实体时出现 StaleStateException

Question

我在数据库 (Oracle) 中保存的 hibernate 实体具有非常复杂的关系，因为它有许多相关实体。看起来像这样……

@Table(name = "t_HOP_CommonContract")
public class Contract {
    @Id
    private ContractPK id;

    @OneToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
    @PrimaryKeyJoinColumn
    private ContractGroupMember contractGroupMember;

    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    @JoinColumns({
        @JoinColumn(name = "TransactionId", referencedColumnName = "TransactionId"),
        @JoinColumn(name = "PrimaryContractId", referencedColumnName = "PrimaryContractId")
    })
    @Fetch(FetchMode.SUBSELECT)
    private List<ContractLink> contractLinks;

    // . . . . . . . 

    // A couple of more one to many relationships

    // Entity getters etc.

}

我还有一些实体，例如...

@Table(name = "t_HOP_TRS")
public class TotalReturnSwap {
    @Id
    private ContractPK id;
    // Entity Getters etc.
}

诀窍是我必须在同一交易中持久化 Contract 和 TotalReturnSwap 实体。

有时它可能是一堆必须在同一事务中持久化的实体。

我在保存 TotalReturnSwap 实体时注意到以下异常(这总是在我保存 Contract 实体之后完成)。

org.springframework.orm.hibernate3.HibernateOptimisticLockingFailureException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1; nested exception is
    org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
    at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:675) \
    at org.springframework.orm.hibernate3.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:793) 
    at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:664) 
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754) 
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723) 
    at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:147) 
    at com.rbs.fcg.publishing.DownstreamContractBusinessEventPostingService.performTDWPersistenceForContracts(DownstreamContractBusinessEventPostingService.java:102) 
    at com.rbs.fcg.publishing.DownstreamContractBusinessEventPostingService.persistContractBusinessEvent(DownstreamContractBusinessEventPostingService.java:87)
    at com.rbs.fcg.publishing.DownstreamContractBusinessEventPostingService.publish(DownstreamContractBusinessEventPostingService.java:67)
    at com.rbs.fcg.publishing.PublishingProcessor.publish(PublishingProcessor.java:76)
    at com.rbs.fcg.publishing.PublishingProcessor.process(PublishingProcessor.java:52)
    at com.rbs.are.MultiThreadedQueueItemProcessor$2.run(MultiThreadedQueueItemProcessor.java:106)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Caused by: org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
    at org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:85)
    at org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:70)

现在有几点可能对回答问题有帮助:

• 我只是在数据库中保存(插入)实体——从不更新/删除/读取
• 即使在单线程环境中，我也能够隔离此异常，因此它看起来不像是多线程问题，即使我们的应用程序是多线程的也是如此

Answer 1

错误可能由以下几种情况引起:

1. 在提交对象之前刷新数据可能会导致清除所有等待持久化的对象。
2. 如果对象具有自动生成的主键，而您正在强制分配一个键
3. 如果您在将对象提交到数据库之前清理对象。
4. 零或不正确的 ID:如果您将 ID 设置为零或其他，Hibernate 将尝试更新而不是插入。
5. 对象过时:Hibernate 缓存 session 中的对象。如果对象被修改，而 Hibernate 不知道它，它会抛出这个异常——注意 StaleStateException

我并没有以此为荣，我找到了它 here .