[Hibernate-JIRA] Created: (HHH-2152) Optimistic lock error although using LockMode.UPGRADE
by Per-Olov Wingren (JIRA)
Optimistic lock error although using LockMode.UPGRADE
-----------------------------------------------------
Key: HHH-2152
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2152
Project: Hibernate3
Type: Bug
Components: core
Versions: 3.1.3
Environment: Oracle 10.2, Hibernate 3.1.3
Reporter: Per-Olov Wingren
Priority: Critical
Attachments: OptLockProblem.zip
I have a situation where two threads tries to update the same entity object at the same time. I use the Hibernate managed versioning using a version number but also a pessimistic lock using LockMode.UPGRADE.
One thread will lock the object in the database and the other will wait for the transaction of the first thread to commit (or rollback). The first thread updates the object, which also will make its version to be incremented. When the second tread get access to the object after the first is commited, it get an incorrect value of the version attribute. This leads to a StaleObjectStateException when the transaction is commited.
The entity object conists of a parent class and a subclass mapped to the database into two tables using <joined-subclass>.
If the testcase is modified to update an attribute in the subclass (numberB) instead of in the superclass it works without errors. Is the problem caused by the fact that Hibernate only locks the subclass in the database (for update of classb.oid) and not the superclass?
I attache a zip file containing a simple but complete test case that shows the problem.
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17 years, 5 months
[Hibernate-JIRA] Created: (HHH-2557) NPE in IdentityMap.IdentityKey.equals()
by Anders Wallgren (JIRA)
NPE in IdentityMap.IdentityKey.equals()
---------------------------------------
Key: HHH-2557
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2557
Project: Hibernate3
Issue Type: Bug
Components: core
Affects Versions: 3.2.3
Reporter: Anders Wallgren
The equals method in org.hibernate.util.IdentityMap.IdentityKey doesn't handle null objects:
{code}
java.lang.NullPointerException
at org.hibernate.util.IdentityMap$IdentityKey.equals(IdentityMap.java:103)
at java.util.HashMap.get(HashMap.java:305)
at org.apache.commons.collections.SequencedHashMap.get(SequencedHashMap.java:288)
at org.hibernate.util.IdentityMap.get(IdentityMap.java:135)
at org.hibernate.engine.StatefulPersistenceContext.getEntry(StatefulPersistenceContext.java:355)
at org.hibernate.action.EntityInsertAction.execute(EntityInsertAction.java:54)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:232)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:139)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:301)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
at com.electriccloud.dao.HibernateFlushListener.onFlush(HibernateFlushListener.java:49)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:575)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:651)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:621)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:311)
at com.electriccloud.dao.TransactionAspect.withTransaction(TransactionAspect.java:121)
at sun.reflect.GeneratedMethodAccessor31.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:576)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:562)
at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:60)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:76)
at com.electriccloud.operations.ConcurrentRetryAspect.performWithRetry(ConcurrentRetryAspect.java:168)
at sun.reflect.GeneratedMethodAccessor56.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:576)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:562)
at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:60)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:76)
at com.electriccloud.operations.OperationTimingAspect.logOperationPerformance(OperationTimingAspect.java:110)
at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:576)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:562)
at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:60)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:203)
at $Proxy97.perform(Unknown Source)
at com.electriccloud.operations.OperationInvoker.invoke(OperationInvoker.java:190)
at com.electriccloud.operations.OperationCaller.call(OperationCaller.java:126)
at com.electriccloud.operations.OperationCaller.call(OperationCaller.java:36)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
at com.electriccloud.util.queue.CommanderThread.run(CommanderThread.java:78)
{code}
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17 years, 5 months
[Hibernate-JIRA] Created: (HHH-2472) Error in HSQLDB Sequence Syntax
by Aaron Mulder (JIRA)
Error in HSQLDB Sequence Syntax
-------------------------------
Key: HHH-2472
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2472
Project: Hibernate3
Type: Bug
Components: core
Versions: 3.2.2
Reporter: Aaron Mulder
I am using Hibernate via JPA. My persistence.xml has this:
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.dialect"
value="org.hibernate.dialect.HSQLDialect"/>
</properties>
My Entity has this:
@SequenceGenerator(name = "GeneratePCSequence", sequenceName = "GEN_PC_SEQUENCE")
...
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "GeneratePCSequence")
private int id;
My DDL has this:
create sequence GEN_PC_SEQUENCE start with 100000 increment by 1;
The result I get when creating a new entity of this type is this:
java.sql.SQLException: Table not found in statement [select next value for GEN_PC_SEQUENCE from dual_GEN_PC_SEQUENCE]
org.hsqldb.jdbc.Util.throwError(Unknown Source)
org.hsqldb.jdbc.jdbcPreparedStatement.<init>(Unknown Source)
org.hsqldb.jdbc.jdbcConnection.prepareStatement(Unknown Source)
org.apache.commons.dbcp.DelegatingConnection.prepareStatement(DelegatingConnection.java:185)
org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.prepareStatement(PoolingDataSource.java:278)
org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:497)
org.hibernate.jdbc.AbstractBatcher.prepareSelectStatement(AbstractBatcher.java:123)
org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:73)
org.hibernate.id.SequenceHiLoGenerator.generate(SequenceHiLoGenerator.java:58)
org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:99)
org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:131)
org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:87)
org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:38)
org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:618)
org.hibernate.impl.SessionImpl.persist(SessionImpl.java:592)
org.hibernate.impl.SessionImpl.persist(SessionImpl.java:596)
org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:212)
The "from dual_GEN_PC_SEQUENCE" looks sketchy to me, but I'm not real sure.
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17 years, 5 months