[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3030) NullPointerException happens in versioning
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http://opensource.atlassian.com/projects/hibernate/browse/HHH-3030?page=c...
]
Viktor Schmidt commented on HHH-3030:
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We've seen this exception several times, too.. i guess there is a problem elsewhere,
which causes an increment on a yet nonexistent version value ...
a co-worker of me did found the real cause of this exception in his case:
There is some non nullable value on the object which was not set... so at commit you get
this misleading Exception.
You should get a Not-Null Property exception (or something), but in some cases we get this
NullPointer one.
NullPointerException happens in versioning
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Key: HHH-3030
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3030
Project: Hibernate3
Issue Type: Bug
Components: core
Affects Versions: 3.2.5
Environment: any
Reporter: John
Priority: Minor
Here is the stack trace:
java.lang.NullPointerException
at org.hibernate.type.IntegerType.next(IntegerType.java:59)
at org.hibernate.engine.Versioning.increment(Versioning.java:25)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.getNextVersion(DefaultFlushEntityEventListener.java:358)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.scheduleUpdate(DefaultFlushEntityEventListener.java:250)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:121)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:196)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:76)
at
org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:35)
at org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:969)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1114)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
......
The code is:
public Object next(Object current, SessionImplementor session) {
return new Integer( ( (Integer) current ).intValue() + 1 );
}
Should there be a null checking for the object "current"?
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