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From Andrus Adamchik <and...@objectstyle.org>
Subject Re: [jira] Created: (CAY-1322) Multiple Transactions: Migrate from Singleton pattern
Date Tue, 01 Dec 2009 13:12:01 GMT
I guess that's a bit premature. Let's figure out if there is a problem  
before opening a Jira. "Jiras" are "tasks", i.e. specific action  
items. So I'd rather we come to some consensus on what needs to be  
done firs, and then Jira action items.

Andrus

On Dec 1, 2009, at 2:50 PM, Evgeny Ryabitskiy (JIRA) wrote:

> Multiple Transactions: Migrate from Singleton pattern
> -----------------------------------------------------
>
>                 Key: CAY-1322
>                 URL: https://issues.apache.org/jira/browse/CAY-1322
>             Project: Cayenne
>          Issue Type: New Feature
>          Components: Cayenne Core Library
>            Reporter: Evgeny Ryabitskiy
>             Fix For: 3.1M1
>
>
> Duplication from Dev-list:
>
> So.. I have several modules, each has own DomainConfig file and
> connection to it's DataBase. Sometimes there can be used different DB
> servers and even different DB types (usually it's Oracle and MS SQL,
> sometimes Sybase).
>
> Singletons:
> 1) Configuration.getSharedConfiguration()
> This problem is solved:
> DefaultConfiguration conf = new DefaultConfiguration("module1- 
> cayenne.xml");
> conf .initialize;
> conf.getDomain();
> //spend some time to find solution... everywhere examples with
> SharedConfiguration
>
> 2)DataContext.getThreadLocal()
> Solved by own ThreadLocal for each module. (modules can work in one  
> thread)
> //also spend some time
>
> 3)Transaction.getThreadTransaction()
> this is killing one!!!
> using of own ThreadLocal doesn't help.
> It's hard-coded in performing Query to use this singleton
> Transaction.getThreadTransaction()
> And that is really huge problem for me.
>
> So me suggestion is to move this ThreadLocal to DataDomain. Still can
> use singleton API for standalone applications.
> Also we can move DataContext to DataDomain.
>
> -- 
> This message is automatically generated by JIRA.
> -
> You can reply to this email to add a comment to the issue online.
>
>


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