[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3406) IndexOutOfBoundsException when a flush occurs during validation inside a flush

IndexOutOfBoundsException when a flush occurs during validation inside a flush ------------------------------------------------------------------------------ Key: HHH-3406 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3406 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.2.6 Environment: 3.2.6ga, oracle11g, tomcat 6.0.16, spring 2.5.1, redhat5.2 or windows XP or debian etch Reporter: vincent Larchet Say we have entity A: @Entity public class A { [...] @AssertTrue public boolean validateSomeCondition(){ //call service S B=S.loadEntityB() [.... do some stuff with B...] } } In my hibernate session I modifiy several entities among them A1, A2, A3 (instances of A), then I flush the session that firsts validates A1. Inside A1.validateSomeCondition() I have to call a service that loads some data inside its own transaction, thus when it returns a commit is triggered that is intercepted an hibernate flushes its session, and not only entities bound to this transaction but the WHOLE session (including A2, A3 !!!). Then validation of A1 finishes successfully and A1 is saved to db, but right after that this exception occurs java.lang.IndexOutOfBoundsException: Index: 1, Size: 0 at java.util.ArrayList.RangeCheck(ArrayList.java:547) at java.util.ArrayList.get(ArrayList.java:322) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:263) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:168) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) 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:596) at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:709) at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:678) at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:319) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:116) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) [...] I do not really know if flushing A2,A3 entites inside the 2nd flush is an issue or not (I do not mind actually...), so I suggest this quick fix: inside ActionQueue method private void executeActions(List list) throws HibernateException { int size = list.size(); for(int i = 0; i < size; i++) execute((Executable)list.get(i)); list.clear(); session.getBatcher().executeBatch(); } replace the "static" int size = list.size(); for(int i = 0; i < size; i++) by an iterator... thx vincent NB: we use OpenSessionInViewFilter