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cameronjones
 Post subject: Shared references to a collection
PostPosted: Thu Mar 11, 2004 5:00 pm 
Beginner
Beginner

Joined: Fri Oct 10, 2003 10:12 am
Posts: 39
hello,

i've been getting the following error when initializing a lazy collection:

Code:
net.sf.hibernate.HibernateException: Found shared references to a collection
   at net.sf.hibernate.impl.SessionImpl.updateReachableCollection(SessionImpl.java:2759)
   at net.sf.hibernate.impl.FlushVisitor.processCollection(FlushVisitor.java:32)
   at net.sf.hibernate.impl.AbstractVisitor.processValue(AbstractVisitor.java:69)
   at net.sf.hibernate.impl.AbstractVisitor.processValues(AbstractVisitor.java:36)
   at net.sf.hibernate.impl.SessionImpl.flushEntity(SessionImpl.java:2474)
   at net.sf.hibernate.impl.SessionImpl.flushEntities(SessionImpl.java:2340)
   at net.sf.hibernate.impl.SessionImpl.flushEverything(SessionImpl.java:2207)
   at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2186)
   at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:61)

and it says in the hibernate docs:
Quote:
Collections obey the usual rules for value types: no shared references, created and deleted along with containing entity.


could someone clarify what this means and what i should do to stop this from happening?

thanks, cam
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chenxihll
 Post subject:
PostPosted: Thu Mar 11, 2004 9:18 pm 
Newbie

Joined: Thu Mar 11, 2004 5:13 am
Posts: 5
I meet such problem two days ago
And the reason is in may meta-model
A subclass declear the same attribute of it's super class

Such as:
ClassB{ String test; }
ClassA extends ClassB {String test;}

Then if you mapping this meta-model into to mapping file
Truely, you will get the problem you said.

I removed duplicate attribute then such problem disaapeared.
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cameronjones
 Post subject:
PostPosted: Fri Mar 12, 2004 9:14 am 
Beginner
Beginner

Joined: Fri Oct 10, 2003 10:12 am
Posts: 39
thanks - this wasn't the problem in this case through, i'd accidently been referencing the same collection in two get\set pairs - the problem with copy\paste...
cam
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