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Re: InstantDB: Problem with updates and foreign keys (Beta 2)


Lalitha

I think so - try 3.25:
http://instantdb.enhydra.org/software/downloads/index.html.

Regards

Pete

--

Peter Hearty                         peter.hearty@lutris.com
Lutris Technologies (UK)        http://www.lutris.com
----- Original Message -----
From: "Lalitha Chinthamani" <lchinthamani@oresis.com>
To: "'instantDB@Enhydra.ORG'" <instantDB@enhydra.org>
Sent: Tuesday, December 12, 2000 7:41 PM
Subject: RE: InstantDB: Problem with updates and foreign keys (Beta 2)


> 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;
> > > >
> > >
> > >
>
> --------------------------------------------------------------------------
> > > ---
> > > > To unsubscribe from this mailing list, send email to
> > majordomo@enhydra.org
> > > > with the text "unsubscribe instantdb" in the body of the email.
> > > > If you have other questions regarding this mailing list, send email
to
> > > > the list admin at owner-instantdb@enhydra.org.
> > > >
> > >
> > >
>
> --------------------------------------------------------------------------
> > --
> > > -
> > > To unsubscribe from this mailing list, send email to
> > majordomo@enhydra.org
> > > with the text "unsubscribe instantdb" in the body of the email.
> > > If you have other questions regarding this mailing list, send email to
> > > the list admin at owner-instantdb@enhydra.org.
> > >
> > >
>
> --------------------------------------------------------------------------
> > ---
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> > majordomo@enhydra.org
> > > with the text "unsubscribe instantdb" in the body of the email.
> > > If you have other questions regarding this mailing list, send email to
> > > the list admin at owner-instantdb@enhydra.org.
> > >
> >
>
> --------------------------------------------------------------------------
> > ---
> > To unsubscribe from this mailing list, send email to
majordomo@enhydra.org
> > with the text "unsubscribe instantdb" in the body of the email.
> > If you have other questions regarding this mailing list, send email to
> > the list admin at owner-instantdb@enhydra.org.
> --------------------------------------------------------------------------
---
> To unsubscribe from this mailing list, send email to majordomo@enhydra.org
> with the text "unsubscribe instantdb" in the body of the email.
> If you have other questions regarding this mailing list, send email to
> the list admin at owner-instantdb@enhydra.org.
>


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