commons-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From James Carman <ja...@carmanconsulting.com>
Subject Re: [POOL] generics on KeyedObjectPool
Date Tue, 12 Oct 2010 14:03:12 GMT
Is it really realistic to think that a pool would support multiple
object types?  I've never really seen that in practice, but I guess it
could happen.  Just seems weird to me.


On Tue, Oct 12, 2010 at 9:49 AM, Simone Tripodi
<simone.tripodi@gmail.com> wrote:
> Hi Brent!
> sounds reasonably good, the only worry I've on it is about the method
>
>    <V> V borrowObject(K key);
>
> because I don't know the type of V; speaking in therms of examples:
>
>    new MyKeyedObjectPoolImpl<String>().borrowObject("one") = ???
>
> So the APIs have to be improved following the Jame's suggestions.
> Have a nice day!
> Simo
>
> http://people.apache.org/~simonetripodi/
> http://www.99soft.org/
>
>
>
> On Tue, Oct 12, 2010 at 3:29 PM, Brent Worden <brent.worden@gmail.com> wrote:
>>  The javadoc on KeyedObjectPool states 'A keyed pool pools instances of
>> multiple types.'  However, the new parametrization on KeyedObjectPool allows
>> for only a single instance type.
>>
>> To allow for pooling multiple typed instances, should the instance type
>> parameter be removed from the interface declaration and placed on the
>> relevant method declarations?  In other words, replace:
>>
>> public interface KeyedObjectPool<K,V> {
>> ...
>> }
>>
>> with:
>>
>> public interface KeyedObjectPool<K> {
>>
>> <V> V borrowObject(K key);
>>
>> <V> void invalidateObject(K key, V obj);
>>
>> <V> void returnObject(K key, V obj);
>> ...
>> }
>>
>> Thoughts?
>>
>> Brent.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: dev-unsubscribe@commons.apache.org
>> For additional commands, e-mail: dev-help@commons.apache.org
>>
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: dev-unsubscribe@commons.apache.org
> For additional commands, e-mail: dev-help@commons.apache.org
>
>

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@commons.apache.org
For additional commands, e-mail: dev-help@commons.apache.org


Mime
View raw message