Design Principles Behind Smalltalk, Revisited
J J
azreal1977 at hotmail.com
Mon Jan 1 09:23:25 UTC 2007
>From: Todd Blanchard <tblanchard at mac.com>
>Reply-To: The general-purpose Squeak developers
>list<squeak-dev at lists.squeakfoundation.org>
>To: The general-purpose Squeak developers
>list<squeak-dev at lists.squeakfoundation.org>
>Subject: Re: Design Principles Behind Smalltalk, Revisited
>Date: Sun, 31 Dec 2006 21:26:22 -0800
>
>
>On Dec 30, 2006, at 9:09 AM, Jimmie Houchin wrote:
>
>>I've avoided RDBMS because I read a lot about the Object Relational
>>mismatch in Squeak, Ruby, Python, etc. mailing lists. So how do I store
>>my millions of objects, search and access them. I could easily store them
>>in files and search via Swish-e. But managing millions of files in the
>>file system is kludge. Ugh. So I've been thinking that I'm working harder
>>on a kludge than it would be to learn SQL and use PostgreSQL.
>
>>So with that nudge from you, I sit at my desk right now reading one of my
>>several SQL books. Thanks. :)
>
>Put down the book.
>
>You want to load up GLORP. It rocks. It is as easy to work with as an
>OODB, but much more flexible and is backed by PostgreSQL. Grab a copy of
>squeak, load the postgres client, then load up glorp. You're golden.
>
>Except you need a meta model. You can write one in glorp, you can build
>one with a GUI like Apple's EOModeler - free with WebObjects. The EOGlorp
>package will let GLORP work off of your EOModel files. Once you have your
>meta model, glorp is just like working with objects. You write queries in
>Smalltalk like
>
>aDatabase readOneOf: User where: [:user | user login = 'jhouchin'].
>
>-Todd Blanchard
Tools like GLORP are very nice: they save you writing SQL directly. But
look at your line of code: it is SQL in message form.
I wasn't talking about using embedded SQL in code. I was talking about the
back end data store. IMO the data is often best modeled relationally. Then
you can set up any views you want and then use something like GLORP to
access it.
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