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Hi Pete,

Just interested in knowing whether the fix you mentioned in this e-mail
thread is already available ?

Thanks,
Lalitha

> -----Original Message-----
> From:	Peter Hearty [SMTP:peter.hearty@lutris.com]
> Sent:	Monday, September 25, 2000 8:01 AM
> To:	instantDB@enhydra.org
> Subject:	Re: InstantDB: Problem with updates and foreign keys (Beta
> 2)
> 
> James
> 
> Fix for this will be in the next release. Hopefully coming in the next few
> days.
> 
> Regards
> 
> Pete
> 
> --
> 
> Peter Hearty                         peter.hearty@lutris.com
> Lutris Technologies (UK)        http://www.lutris.com
> ----- Original Message -----
> From: "James Medlock" <jmedlock@tenornetworks.com>
> To: <instantDB@enhydra.org>
> Sent: Wednesday, September 20, 2000 5:23 PM
> Subject: RE: InstantDB: Problem with updates and foreign keys (Beta 2)
> 
> 
> > Is this something that can be fixed in the next beta as this problem
> makes
> > FK's pretty much unusable?
> >
> > Thanks
> > James
> >
> > -----Original Message-----
> > From: owner-instantDB@enhydra.org [mailto:owner-instantDB@enhydra.org]On
> > Behalf Of Peter Hearty
> > Sent: Tuesday, September 19, 2000 1:49 PM
> > To: instantDB@enhydra.org
> > Subject: Re: InstantDB: Problem with updates and foreign keys (Beta 2)
> >
> >
> > James
> >
> > Looks like a bug. InstantDB implements updates by doing a delete
> followed
> by
> > an insert. It's probably failing on the delete part because it hasn't
> > checked that the subsequent insert has a valid value that will restore
> the
> > referential integrity.
> >
> > Regards
> >
> > Pete
> >
> > --
> >
> > Peter Hearty                         peter.hearty@lutris.com
> > Lutris Technologies (UK)        http://www.lutris.com
> > ----- Original Message -----
> > From: "James Medlock" <jmedlock@tenornetworks.com>
> > To: <instantdb@enhydra.org>
> > Sent: Tuesday, September 19, 2000 6:15 PM
> > Subject: InstantDB: Problem with updates and foreign keys (Beta 2)
> >
> >
> > > When I try and do an update of a row in a table for which there is a
> > foreign
> > > key reference, I get an exception stating that "Cannot delete value,
> XXX.
> > In
> > > use by column A.B".
> > >
> > > Am I doing something wrong, or can Foreign Keys not be used in tables
> that
> > > are being updated?
> > >
> > > Thanks
> > > James
> > >
> > > --
> > >
> > > Example:
> > >
> > > ; First load the JDBC driver and open a database.
> > > d org.enhydra.instantdb.jdbc.idbDriver;
> > > o jdbc:idb=blah.prp;
> > >
> > > ; Record all results
> > > e SET EXPORT "export0.txt" FIXEDLENGTH COLNAMEHEADER ROWNUMBERS
> CONTROLCOL
> > > SUMMARYHEADER;
> > >
> > > e create table BAR (
> > >   ID int,
> > >   NAME CHAR(32)
> > > );
> > >
> > > e create table FOO (
> > >   ID int foreign key references BAR(ID) on delete cascade,
> > >   NAME char(32)
> > > );
> > >
> > > e insert into BAR(ID, NAME) values(101, "fred");
> > > e insert into BAR(ID, NAME) values(102, "joe");
> > >
> > > e insert into FOO(ID, NAME) values(101, "fred2");
> > > e insert into FOO(ID, NAME) values(102, "joe2");
> > >
> > > ; This fails with "Cannot delete..." exception
> > > e update BAR set NAME="newfred" where ID=101;
> > >
> > > ; The End
> > > c close;
> > >
> >
> >
> --------------------------------------------------------------------------
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> >
> >
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> >
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