> -----Original Message-----
> From: Thomas Yip [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, September 19, 2001 2:29 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [castor-dev] More again: JDO mapping: foreign 
> key to same table
> 
> 
> Self-reference relationship is not supported either. Sorry Mike.
 
Current castor from CVS support self-reference for both 1:N and M:N
relations (I tested it with PostgreSQL) for loading objects and for
OQL.

Petr
 
> Thomas
> 
> -----Original Message-----
> >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> >Sent: Friday, September 14, 2001 11:21 AM
> >To: [EMAIL PROTECTED]
> >Subject: [castor-dev] More again: JDO mapping: foreign key 
> to same table
> >
> >
> >Using a table having these columns:
> >
> >id char8),             -- primary key
> >parent_node_id char(8) -- foreign key to same table
> >
> >I am now using this mapping element:
> >
> ><field name="childNode" type="xdo.Node2" collection="array">
> ><sql many-key="parent_node_id"/>
> ></field>
> >
> >and I am getting this error:
> >
> >java.sql.SQLException: ORA-01416: two tables cannot be outer-joined
> >to each other
> >
> >Any answers?
> >
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