Re: ERXSQLHelper
Re: ERXSQLHelper
- Subject: Re: ERXSQLHelper
- From: Paul Hoadley <email@hidden>
- Date: Tue, 13 Jan 2015 10:06:38 +1030
On 13 Jan 2015, at 10:01 am, OC <email@hidden> wrote:
>> Just my 2¢, but instead of that large block of code, why not just change some properties, run migrations at app startup, and declare your changes there? Migrations work and you don’t have to reinvent the wheel. Then, if your SQL continues to be incorrect, you know where to focus.
>
> Can you please point me to some howto? To be frank, I have absolutely no idea what “migration” is.
Start here:
http://jenkins.wocommunity.org/job/Wonder/lastSuccessfulBuild/javadoc/er/extensions/migration/package-summary.html
> Consider my current case -- I need to sync tables to model /more details below/, and perhaps I'm just dumb, but "migration" is about the very last word I would search for, to fulfill that need?!? I don't migrate anything to anywhere; all I need is to synchronize the database to the model.
Migrations will do that, though it's completely manual in that you provide Java code to "migrate" the database from its existing state to a new state where it reflects changes you've made to the model.
--
Paul Hoadley
http://logicsquad.net/
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