Hi,
Just fore reference I think I would prefer that this be placed in a proposal
dir until it has been tested a bit more.
On Wed, 19 Sep 2001 00:38, Berin Loritsch wrote:
> I just added a Persistable interface so that Components that may
> change their configuration parameters during run-time will be able
> to save those changes to the configuration file. Here is where it
> will really help:
I think Persistable is probably the wrong term for this as it sounds too
generic.
> ExcaliburComponentManager/Selector classes can be modified to be
> persistable, and perform self-tuning. In other words, the magic
> parameters for pool sizes on Poolable Components can be altered
> to what the last maximum number of concurrent components in the
> pool were. It can also calculate the most efficient grow size
> and minimum components by an algorithm. With that done, the
> persistable interface will automagically plant those attributes
> as it gives returns its Configuration object.
Thats fine but currently we have no mechanism to modify the Configuration
object and thus I can't see any use of persist() currently.
> It also allows for self-healing configuration files so that as
> a deprecated Configuration parameter is read in and handled, the
> current prefered parameters are persisted.
>
> I came up with this approach due to both the dialogue with the
> dbXML folks, and the way that Axis needs to handle persistance.
> Axis can add new Handlers, etc. during the normal life cycle, and
> we need to reflect that in the Configuration.
I agree that it is a desirable feature but I think it should be a separate
*service* from Configurable interface. Maybe we have a ConfigurationStore or
ConfigurationRepository or whatever that we can get ModifiableConfiguration
(or MutableConfiguration) objects that we can alter later or whatever.
Management of configuration is a separate concern from reading of
configuration and should be treated as such IMHO.
--
Cheers,
Pete
-----------------------------------------------
"Only two things are infinite, the universe and
human stupidity, and I'm not sure about the
former." -Albert Einstein
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