我保存在数据库(Oracle)中的hibernate实体具有非常复杂的关系,因为它有许多相关实体.它看起来像这样……
@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
我还有几个实体,比如……
@Table(name = "t_HOP_TRS")
public class TotalReturnSwap {
@Id
private ContractPK id;
// Entity Getters etc.
}
诀窍是我必须在同一个事务中持久化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(在保存Contract实体后总是这样做).
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)
现在有几点可以帮助回答问题：
>我只在数据库中保存(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,因此即使我们的应用程序是多线程的,它看起来也不像是多线程问题
错误可能由以下几点引起：
>在提交对象之前刷新数据可能会导致清除所有待处理的对象.
>如果对象具有自动生成的主键,并且您正在强制分配的键
>如果在将对象提交到数据库之前清理对象.
>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.
>对象是陈旧的：Hibernate从会话中缓存对象.如果对象被修改,并且Hibernate不知道它,它将抛出此异常 – 请注意StaleStateException
我没有把它归功于它,发现它是here.
