<br><br><div class="gmail_quote">On Sun, Jan 17, 2010 at 4:51 PM, <span dir="ltr"><<a href="mailto:recursive68@gmail.com">recursive68@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi,<br> <br>I'm a newby to ST and Seaside. I attempting to port web app that's written in Oracle/Java over to Seaside running on Pharo. The current application uses Oracle sequence generated unique id's for unique identifiers for records, is there a parallel to this when using just objects persisted in the Pharo image ? I know I can code my one implementation to replicate this but wondered whether this is the best way to model it, what are the alternatives and if it is the best way, is there a ready made package that I could use to generate unique id's ?<br>
<br></blockquote><div><br>Wow! That's seems a very cool project :) Sorry I don't know the concrete answer to your question, however, I would like to give you two links that may be of help to you. Several times was discussion the "change of mind" that has to be done when moving from relational persistence to object persistence. Here are two good links that I recommend you to read completely:<br>
<br>- <a href="http://lists.squeakfoundation.org/pipermail/seaside/2009-May/020688.html">http://lists.squeakfoundation.org/pipermail/seaside/2009-May/020688.html</a><br>- <a href="http://gemstonesoup.wordpress.com/2009/05/19/gemstone-101-making-the-leap-from-rdbms-to-persistent-objects/">http://gemstonesoup.wordpress.com/2009/05/19/gemstone-101-making-the-leap-from-rdbms-to-persistent-objects/</a><br>
<br>I wanted to let you know also that you can use SqueakDBX (<a href="http://www.squeakdbx.org/">http://www.squeakdbx.org/</a>) to migrate your data from Oracle to Pharo objects. SqueakDBX is a generic database driver for Pharo and Squeak for different backends included Oracle. <br>
<br>Finally, I would really think about persisting in image. For some applications this is reasonable, but maybe for bigger applications this seems like a limited approach to persist. If you want Object Oriented Databases, you can take a look to Magma or Gemstone/GLASS.<br>
<br>Cheers<br><br>Mariano<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">TIA<br>Jon
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