+1 for the improvement.
Let's defer putting this in Cayenne core till after 1.2, but it
should be fairly easy to implement - just return a lazy DataSource
decorator from JNDIDataSourceFactory.getDataSource(..) that calls
back on some non-public factory method when the first connection is
requested.
Andrus
On May 5, 2006, at 9:59 AM, Mike Kienenberger wrote:
> One of my ongoing maintenance reducers for my current set of projects
> has been to share the same configuration file in all my projects,
> letting JNDI point to the right things at the right times.
>
> However, it'd be cool if my application didn't attempt to access a
> data source definition until it actually needed it. Right now, I
> have to define JNDI definitions for all databases even if the
> underlying application will never use the node.
>
> I do note that the actual connection to the database is deferred until
> it's first used. What's the feasability of also deferring the JNDI
> request until it's also needed?
>
> I admit I haven't tried to look into the source yet -- being lazy
> today -- in case that someone can give me a quick "don't bother"
> before spending any time on it ;)
>
> And if it is feasable, how do others feel about this change? I
> suppose I could make a subclass of JNDIDataSourceFactory in the worse
> case, make it a config option in the second case, and make it the only
> behavior in the best case :)
>
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