PoolAdapter? > -----Original Message----- > From: Henri Yandell [mailto:[EMAIL PROTECTED] > Sent: Friday, February 28, 2003 2:01 PM > To: Jakarta Commons Developers List > Subject: Re: [POOL] Pool listeners > > > > Also a PoolAdaptor. > > On Fri, 28 Feb 2003, David Graham wrote: > > > I would make PoolListener more closely match the Java > listener style. > > That > > is: > > 1. PoolListener extends java.util.EventListener > > > > 2. The methods accept an event object that extends > > java.util.EventObject (maybe call it PoolEvent). > > > > 3. The methods shouldn't throw Exception. They should > throw specific > > exception types or non at all. > > > > I like the concept. > > > > David > > > > > > > > > > >From: "Quinton McCombs" <[EMAIL PROTECTED]> > > >Reply-To: "Jakarta Commons Developers List" > > ><[EMAIL PROTECTED]> > > >To: <[EMAIL PROTECTED]> > > >Subject: [POOL] Pool listeners > > >Date: Fri, 28 Feb 2003 13:19:48 -0600 > > > > > >I am working on a patch to allow listeners to be added to > pools that > > >will receive notifications on various events. Does anyone > object to > > >having this functionality included? > > > > > >Here is the design - > > > > > >I was thinking about adding support for a PoolListener > interface for > > >the pool component. Object which implement this interface > could be > > >added to any ObjectPool or KeyedObjectPool. The listener would be > > >notified on the following events: > > > > > >- An object is borrowed from the pool > > >- An object is returned to the pool > > >- An new object is created and added to the pool > > >- An object is removed from the pool > > > > > >addListener(PoolListener) would be defined in ObjectPool and > > >KeyedObjectPool. It would be implemented in BaseObjectPool and > > >BaseKeyedObjectPool. Also in the previous two Base* classes, > > >protected methods would be added to handle sending out the > > >notifications to the list of listeners. > > > > > >public interface PoolListener > > >{ > > > /** > > > * Executed immediatedly before an object is returned > from the pool. > > > * > > > * @param obj The object being returned > > > * @throws Exception generic exception > > > */ > > > void onBorrow(Object obj) throws Exception; > > > > > > /** > > > * Executed immediately after an object is returned > to the pool. > > > * > > > * @param obj the object being returned > > > * @throws Exception generic exception > > > */ > > > void onReturn(Object obj) throws Exception; > > > > > > /** > > > * Executed immediately after a new object is created > but before it > > > * is added to the pool. > > > * > > > * @param obj the newly created object > > > * @throws Exception generic exception > > > */ > > > void onCreate(Object obj) throws Exception; > > > > > > /** > > > * Executed when an object is removed from the pool. > > > * > > > * @param obj The object being removed. > > > * @throws Exception generic exception > > > */ > > > void onDestroy(Object obj) throws Exception; > > > > > > >--------------------------------------------------------------------- > > >To unsubscribe, e-mail: [EMAIL PROTECTED] > > >For additional commands, e-mail: > [EMAIL PROTECTED] > > > > > > _________________________________________________________________ > > Tired of spam? Get advanced junk mail protection with MSN 8. > > http://join.msn.com/?page=features/junkmail > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >
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