Hi guys.

I'm having wonderful fun implementing 'latest app' in Class::DBI and Class::DBI::Pager (I've put off learning these modules for a while, and now regret it ;). However, I do have a problem - I'm interfacing with a Sybase database setup with auto incrementing (IDENTITY) primary keys, and Class::DBI doesn't like them.

Looking at the code, there is already a bit of a hack in there for this:

my $id = $dbh->{mysql_insertid}    # mysql
    || eval { $dbh->func('last_insert_rowid') };    # SQLite
    $self->_croak("Can't get last insert id") 
        unless defined $id;

[download]

Now, sadly, I can't just hook in there, because on Sybase I need to execute 'SELECT @@identity' immediately after the INSERT, there's no convenient variable hanging around for me to poach. And herein lies the issue.

I've overridden _auto_increment_value() to do this extra query, but all I get back is '0'. It seems that by the time I get to execute my query, Sybase has forgotton what @@identity is. I'm assuming this is to do with the database handle - I've tried turning off autoupdate/autocommit, but that doesn't make any different. I guess I'm just not getting their in time. I've even tried overriding _insert_row(), still no go. Perhaps the answer lies in Ima::DBI somewhere.

Has anyone got this combination to work in this style? I don't personally want to run without auto-incrementing keys, because that would be work. However, I do need to find some way of getting back the id of the recently created object, otherwise Class::DBI isn't going to speak to me :/ Can anyone offer any hints?

In reply to Class::DBI && Sybase by kal

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