Oliver Zeigermann wrote:
Folks,
I was wondering if there is something like a live update for classes
depending on configuration data that might change while the
application is running?
I was thinking of something like a registry mechanism where an object
tells a central service that it depends on this and that property and
gets a call back as soon as the property changes.
Is there something like that in the configuration component? If not,
would it be an option to include it in future releases?
Thanks in advance and cheers
Oliver
What we have thought about are observable configurations, i.e. you
register an event listener at a configuration and get then notified
about changes at properties. But there is nothing concrete yet.
Your suggestion goes a bit further by allowing a listener to exactly
specify in which events it is interested. I think this is a good idea
because typically not all portions of a configuration are important
enough to react on every change. If we had a generic event notification
mechanism, your registry could be implemented on top of that.
A similar point I had in mind is a combination of such an event
notification mechanism and our reloading facilities. If a reloading
strategy could be triggered (by some external sources) to periodically
check configuration files, it could send events whenever a change is
detected.
In short, I would like to see features like that in future releases of
commons-configuration.
Oliver
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
