Re: WO and MySQL
Re: WO and MySQL
- Subject: Re: WO and MySQL
- From: Johan Henselmans <email@hidden>
- Date: Mon, 17 Oct 2005 08:59:35 +0200
On 17-okt-2005, at 5:44, LD wrote:
Hi Colin
On 17/10/2005, at 3:25 AM, Colin Shreffler wrote:
I’m working on my first WO project. I’ve been trying to get it to
work with
PostgreSQL for some time because I believe it to be a great RDBMS,
but
continue to have problems. One step forward, one step back, etc.
I’ve
tried to use Project Wonder to solve these issues, but continue to
have
problems... I’m getting fed up!
As Anjo mentioned, it'd be good to know exactly what problems
you're having.
I'm using PostgreSQL without any problems.
The trick to getting it working all boils down to the plugin.
You'll want to install the PostgresqlPlugIn.EOMplugin and the
PostgresqlPlugIn.framework and the correct locations (/Developer/
EOMBunles, Library/Frameworks respectively) and make sure to
reference the framework in your project.
The one thing to be aware of when using the current version of the
Project Wonder (and even the HexDreams version) of the
PostgresqlPlugIns is that if you decide to use the "serial" column
type for your primary keys (i.e., selecting these in EOModeler for
a column) then the plugin won't find the correct column [1].
There's an easy fix for this (by editing the source code for the
plugin). Otherwise, simply use an int type, choose to create
primary key support when generating SQL from EOModeler and you
should be right.
Let me know if you need more help with this...
[1] The postgres serial type automatically creates a sequenced
called: <tableName>_<pkColumn>_SEQ whereas the current version of
the plugin looks for a sequence called <tableName>_SEQ.
with regards,
--
LD
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You might having trouble that the user that is connecting to the
database does not have permission to generate new tables. The wonder
plugin used to generate a EO_PK_TABLE.
The other one used to be that one could not use the serial type, but
from your comments it seems that has been resolved. I would really
like if the Wonder plugin would use the available seq, however.
Sometimes one has to connect to an existing database, with _seqs that
are used by other programs to generate new primary keys.
I liked the hexdreams plugin better, in that respect: using the .seq
tables to generate new primary keys makes it easier to play nice with
other programming languages (connections through ODBC, php or perl)
to generate primary keys.
Does the wonder postgresql-plugin still rely on an EO_PK_TABLE
construction for the generation of primary keys that are not based on
the serial type?
Best Regards,
Johan Henselmans
http://www.netsense.nl
Tel: +31-20-6267538
Fax: +31-20-6273852
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