Looks like their javadoc is a little off, recommending new
MetaDataKey(Role.class) { } when I believe they meant new MetaDataKey<Role>() {
} . This resonates with the optionality I did for the type parameter in the
proxy2-stub module's StubConfigurer class: if the implementation has the
variable assigned as by an anonymous inner class declaration, no need to pass
the class reference explicitly. This does necessitate some generics-smart
code; does [pool] depend on [lang]? lang3's TypeUtils takes care of this
nicely.
-Matt
On Oct 12, 2010, at 8:38 AM, James Carman wrote:
> If you're going to do that, I'd recommend doing something similar to
> what the Wicket folks did:
>
> http://wicket.apache.org/apidocs/1.4/org/apache/wicket/MetaDataKey.html
>
> http://wicket.apache.org/apidocs/1.4/org/apache/wicket/Application.html#getMetaData%28org.apache.wicket.MetaDataKey%29
>
> This way, the key has type information "baked in."
>
> On Tue, Oct 12, 2010 at 9:29 AM, Brent Worden <brent.wor...@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.
>>
>>
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