Peter Donald wrote:
> We could also kill Executable interface. Useful as it is - it usuallly
> not considered lifecycle stuff.
I use the Executable interface to signal an objects ability to do
something between *initialize* and *dispose* which comes in very handy
for execution of minmal component test or when you want a component to
act as a function. I consider Executable and Startable as incompatable
at the container level - i.e. a container should not attempt to execute
and start a component. However, I have several occurance of a component
implementing both - the container will normally invoke start unless
explicity directed to run the component as a function (Executable).
Cheers, Steve.
>
>
> At 11:27 AM 6/15/2002 -0400, you wrote:
>
>> This houses the Initializable, Startable, and Resumable interfaces.
>>
>> I'm pretty happy with it, but we should consider a couple of points:
>>
>> 1) are Initializable and Disposable separate concerns? If so we should
>> split the interface. If not, then we will leave it alone
>> 2) We have determined that start() and stop() apply to the same concern
>> of an active component. We should explicitly state that the
>> Startable
>> interface is designed to let an active component know when they can
>> start background execution threads and when to stop them safely.
>> We should also state as a contract that stop()ing a component
>> MUST NOT FAIL! This preculdes the necessity of an exception at this
>> point. It also makes it the responsibility of the component to clean
>> up any expensive resources like threads and sockets successfully.
>> - The container has no way of nowing what system resources a
>> component
>> takes if they are not retrieved from other components.
>>
>>
>> "They that give up essential liberty to obtain a little temporary safety
>> deserve neither liberty nor safety."
>> - Benjamin Franklin
>>
>>
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>
>
> Cheers,
>
> Peter Donald
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> "Faced with the choice between changing one's mind,
> and proving that there is no need to do so - almost
> everyone gets busy on the proof."
> - John Kenneth Galbraith
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
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OSM SARL
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