cocoon-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Berin Loritsch <>
Subject Re: RequestLifecycle components
Date Wed, 22 Oct 2003 16:03:38 GMT
Carsten Ziegeler wrote:

> Berin Loritsch wrote:
>>I'm running into an issue here with RequestLifecycle components.
>>I want to
>>write the handler and such, and we can assume one handler to one component
>>definition (configuration, etc.).  Right now the helper classes
>>assume we have
>>access to a Role.  This is not the case.
>>I believe we can simplify things a little, but we cannot assume
>>we have acess
>>to the role.  I will let you know when I am done with this issue,
>>but if someone
>>has any hints, help to offer, etc. let me know.
> If you need help, just let me know.
> I'm really thinking more and more that we simply should drop
> RequestLifecycle and GlobalRequestLifecycle. Why?
> In most cases they are not used for the lifecycle of the component
> but for the lifecycle of the data the component acts on.
> You can achieve the same thing now by using the
> o.a.c.components.persistence.RequestDataStore which is imho a cleaner
> solution.
> Now, the advantage of the RequestLifecycleComponent is performance.
> If you have several places during a request where this component is
> used, only one instance of a RLC is used, which means the data
> it acts on is only fetched once as well.
> If you use a Poolable component with the RequestDataStore, this
> component is retrieved several times and several times the
> data is fetched from the store. And exactly this last point,
> fetching the data from the request is a little bit more
> costly. Hmm.
> *If* someone would start a vote on deprecating RLC in 2.1 now
> and removing them from 2.2, my vote would be above 0.

Well, I would be inclined to agree with you, esp. with the PerThread
lifestyle available.

Now, I do have support for your lifecycle as best as can be done in a
short time.


"They that give up essential liberty to obtain a little temporary safety
  deserve neither liberty nor safety."
                 - Benjamin Franklin

View raw message