[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5167) NullPointerException on double-save of versioned entity

[Robert Hailey (JIRA)]

NullPointerException on double-save of versioned entity
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                 Key: HHH-5167
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5167
             Project: Hibernate Core
          Issue Type: Bug
          Components: core
    Affects Versions: 3.3.2
         Environment: PostgreSQL 8.3.3, Hibernate 3.3.2.GA (2009-06-24)
            Reporter: Robert Hailey
            Priority: Minor



(psuedocode)

VersionedPojo v=new VersionedPojo();
session.save(v);
String secondary=functionNeedingId(v.getId());
v.setSecondary(secondary);
session.saveOrUpdate(v);

--

A common example of a function needing an id might include the saving of a many-to-one relationships. This stack trace has been seen in forum posts and is very likely to be this same issue.

--

java.lang.NullPointerException
	at org.hibernate.type.LongType.next(LongType.java:79)
	at org.hibernate.engine.Versioning.increment(Versioning.java:131)
	at org.hibernate.event.def.DefaultFlushEntityEventListener.getNextVersion(DefaultFlushEntityEventListener.java:387)
	at org.hibernate.event.def.DefaultFlushEntityEventListener.scheduleUpdate(DefaultFlushEntityEventListener.java:279)
	at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:151)
	at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219)
	at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)
	at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:49)
	at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1028)
	at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:366)
	at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)



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