RE: [TM4J-users] corrupted AssociationRole in hibernate / MySQL

[Kal A. <ka...@te...>]

Hi George,

It sounds like the association role has lost its reference to its
association in the database. There is no easy fix for this =
programmatically.
I think you might have to look in the database tables to try and figure =
out
what can be deleted.=20

However, what would be important would be to find out how the reference =
got
lost. E.g. can you tell what association it should be in, and can you =
see if
that association still exists. Or perhaps you called =
association.remove()
and the code did not remove the association roles (in which case perhaps
there are other association roles with no parent association in your =
topic
map).

Cheers,

Kal

-----Original Message-----
From: tm4...@li...
[mailto:tm4...@li...] On Behalf Of George =
Tryfon
Sent: 29 August 2005 20:08
To: tm4...@li...
Subject: [TM4J-users] corrupted AssociationRole in hibernate / MySQL

Hello,
I am developing a topic map server using MySQL / hibernate
(It will be free to be used with a touchgraph front end editor, in a =
couple
of months time)

The problem:
Somehow, a corrupted AssociationRole is created inside the database.
The AssociationRole has "type" and "player", but has NO "Association".

I am accessing it using:
Set associationRoles =3D player.getRolesPlayed ();

AssociationRole arProblematic =3D ...;
Association a =3D arProblematic.getAssociation ();
and a =3D=3D null (!)

I try to :
arProblematic.remove ();

and I have a NullPointerException while the arProblematic is not =
removed.

I can't even remove the player because it is connected with the
arProblematic

do you have any ideas on how should I deal with this situation
programmatically?

Thank you for your help
Cheers
George
TAKT research group


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