Re: [TM4J-users] more on AssociationRole in hibernate / MySQL

[George T. <geo...@fr...>]

Hello again

Eventually, the only solution I found, in order to remove an AssociationR=
ole
from
Association, is the following:

1. I replicate the previous association with a new one (without the
specified AssociationRole)
2. I move the Reifier into the new association
3. I remove the old association completely

If anybody has some ideas on this problem, or would like to ask for
something, I would like to read it
Cheers
George

----- Original Message -----
From: "George Tryfon" <geo...@fr...>
To: <tm4...@li...>
Sent: Friday, September 02, 2005 10:09 PM
Subject: [TM4J-users] more on AssociationRole in hibernate / MySQL


> Hello again,
>
> (I am attaching this as a plain text also, for easier reading)
>
> I have a problem with Associations and after some days of confusion I
found
> out that:
>
> In my hibernate/MySQL server (I have a client server application using
RMI)
>
> The server is trying to delete an AssociationRole, because of a clients
RMI
> call
>
> here is my code (in the server):
>
> Association a =3D m_associationRole.getAssociation ();
> m_associationRole.remove ();
> System.out.println ("comes up to this point");
> Set<AssociationRole> set =3D a.getAssociationRoles ();
> System.out.println ("never comes here!");
> This generaly should work OK but:
>
> If for some reason a previous (different) RMI call from the client (or
> another client), used this specific Association that holds the
> AssociationRole
>
> As a result, I have the following Exception:
>
>
> comes up to this point
>
> org.tm4j.topicmap.ProviderTransactionException: Error updating data
object.
>
> Cause: net.sf.hibernate.ObjectNotFoundException: The object with that i=
d
was
> deleted: 4028802.....bbb600002, of class:
> org.tm4j.topicmap.hibernate.MemberDataObject
>
> Cause:The object with that id was deleted: 4028802.....bbb600002, of
class:
> org.tm4j.topicmap.hibernate.MemberDataObject
>
> at org.tm4j.topicpam.hibernate.HibernateProviderTransaction.load(Unknow=
n
> Source)
>
> at org.tm4j.topicmap.hibernate.PersistenceWrapper.load(Unknown Source)
>
> at org.tm4j.topicmap.hibernate.PersistenceWrapper.load(Unknown Source)
>
> at org.tm4j.topicmap.hibernate.MemberImpl.getPlayers(Unknown Source)
>
> at org.tm4j.topicmap.hibernate.MemberImpl.getPlayers(Unknown Source)
>
> at
>
org.tm4j.tmapi.core.TMAPIAssociationImpl.getAssociationRoles(TMAPIAssocia=
tio
> nImpl.java:79)
>
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>
> at java.lang.reflect.Method.invoke(Unkown Source)
>
> at sun.rmi.server.UnicastServerRef.dispatch(Unkown Source)
>
> at sun.rmi.transport.Transport$1.run(Unkown Source)
>
> at java.security.AccessController.doPrivileged(Native Method)
>
> at sun.rmi.transport.Transport.serviceCall(Unkown Source)
>
> at sun.rmi.transport.tcp.TCPTransport.handleMessage(Unkown Source)
>
> at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unkown Sour=
ce)
>
> at java.lang.Thread.run(Unkown Source)
>
> caused by: net.sf.hibernate.ObjectNotFoundException: The object with th=
at
id
> was deleted: 4028802.....bbb600002, of class:
> org.tm4j.topicmap.hibernate.MemberDataObject
>
> at net.sf.hibernate.impl.SessionImpl.doLoad(SessionImpl.java:2060)
>
> at net.sf.hibernate.impl.SessionImpl.doLoadByClass(SessionImpl.java:195=
5)
>
> at net.sf.hibernate.impl.SessionImpl.load(SessionImpl.java:1884)
>
> ... 18 more
>
>
>
>
>
> I close and restart the client, I try to access the AssociationRoles an=
d I
> get:
>
>
> java.rmi.UnmarshalException: Error unmarshaling return; nested exceptio=
n
is:
>
> java.lang.ClassNotFoundException:
> org.tm4j.topicmap.ProviderTransactionException
>
> at
sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:217)
>
> at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:126)
>
> at etm.server.rmi.tmapi.EtmAssociationImp_Stub.getAssociationRoles(Unkn=
own
> Source)
>
> at
>
etm.client.tmapi.AssociationImp.getAssociationRoles(AssociationImp.java:7=
0)
>
> at yellow.ui.graph.PanGraph.expandAssociation(PanGraph.java:629)
>
> at
>
yellow.actions.node.ExpandTopicRolesAction$1TThread.run(ExpandTopicRolesA=
cti
> on.java:104)
>
> Caused by: java.lang.ClassNotFoundException:
> org.tm4j.topicmap.ProviderTransactionException
>
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
>
> at java.security.AccessController.doPrivileged(Native Method)
>
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
>
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
>
> at java.lang.Class.forName0(Native Method)
>
> at java.lang.Class.forName(Class.java:242)
>
> at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:430)
>
> at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:165)
>
> at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:620)
>
> at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:247)
>
> at
>
sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:19=
7)
>
> at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:15=
38)
>
> at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1460)
>
> at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1693)
>
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
>
> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
>
> at
sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:215)
>
> ... 5 more
>
>
>
> I need to restart the server in order for the Association to work OK.
>
> (I have no similar problems with Topics, or deleting the full Associati=
on,
> or Occurrences)
>
> I am not a hibernate expert and I don't know if someone that knows
hibernate
> could have any ideas on this
> It seems to me there is a problem with sessions or something like this
>
> any ideas?
> Cheers
> George
>
>
>
>
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