Hi,

Just stating an incompletely informed opinion here ..

If you want something simple, light-weight and easy to use, go for
Declarative Services.

If you want elaborate functionality or need something Declarative
Services does not provide, consider iPojo (I understand it is an
evolution of Declarative Services, right ?)

If you have a Spring background go for blueprint.

Regards
Felix, whose loves and sticks with Declarative Services ;-)

Am Donnerstag, den 26.05.2011, 02:23 +0100 schrieb jie yan: 
> On Thu, May 26, 2011 at 6:02 AM, Alasdair Nottingham <n...@apache.org> wrote:
> 
> >
> >
> > Alasdair Nottingham
> >
> > On 25 May 2011, at 22:16, "Richard S. Hall" <he...@ungoverned.org> wrote:
> >
> > > On 5/25/11 16:26, Alasdair Nottingham wrote:
> > >> Hi,
> > >>
> > >> This is good I might link to it, or pinch it for the aries webpage too
> > >> if that is ok. When doing that thought I would put some changes into
> > >> the blueprint column. The Aries blueprint implementation provides some
> > >> value add that would change some of the No's into Yes's.
> > >
> > > Sure.
> > >
> > >> One thing though in component lifecycle control you have a Partial
> > >> down for blueprint I was wondering what  you meant by this.
> > >
> > > I'd have to review the chapter, I don't really claim to be any Blueprint
> > expert...other than knowing it sucks... ;-)
> >
> > Of course if you were an expert you would know how much better it is than
> > anything else ;) let the religious flame war begin, or not.
> >
> 
> In fact, casual users wish for an almighty expert who knows all solutions
> in-depth and exposes them to all.
> 
> If there's no such expert, the second best method is, experts of different
> solutions advertise themself and compare with each other.
> 
> Maybe that can be called religious flame war, but it's valuable. What we
> really need in open community is simple and perfect product in technology,
> but not many repeat manufacturing wheels like some outside companies.
> 
> Regards,
> drhades
> 
> >
> > >
> > > -> richard
> > >
> > >> Thanks
> > >> Alasdair
> > >>
> > >>
> > >> On 25 May 2011 15:29, Richard S. Hall<he...@ungoverned.org>  wrote:
> > >>> On 5/25/11 9:19, Richard S. Hall wrote:
> > >>>> We actually have a table in our book (OSGi in Action) that tries to
> > >>>> compare the features...perhaps I could re-create that table on a web
> > page...
> > >>> Ok, I added the table to the iPOJO FAQ on wiki:
> > >>>
> > >>>
> > >>>
> > https://cwiki.apache.org/confluence/display/FELIX/iPOJO+FAQ#iPOJOFAQ-HowdoesiPOJOcomparetoDeclarativeServicesorBlueprint%3F
> > >>>
> > >>> It's not perfect, but it is better than nothing. It should eventually
> > >>> propagate to our static pages.
> > >>>
> > >>> Clement, please double check the iPOJO features, since you've added
> > features
> > >>> since the book has been published.
> > >>>
> > >>> ->  richard
> > >>>
> > >>>> On 5/25/11 5:26, jie yan wrote:
> > >>>>> +1
> > >>>>>
> > >>>>> Regards,
> > >>>>> drhades
> > >>>>>
> > >>>>> On Wed, May 25, 2011 at 5:11 PM, Alex Karasulu<akaras...@apache.org>
> > >>>>>  wrote:
> > >>>>>
> > >>>>>> On Wed, May 25, 2011 at 6:28 AM, Richard S. Hall<
> > he...@ungoverned.org
> > >>>>>>> wrote:
> > >>>>>>> On 05/24/2011 09:46 PM, jie yan wrote:
> > >>>>>>>
> > >>>>>>>> I wonder what is the difference between these three component
> > runtime.
> > >>>>>>>>
> > >>>>>>> They all manage service dependencies. Blueprint and iPOJO provide
> > more
> > >>>>>>> sophisticated features than DS. Each has a different focus or goal.
> > >>>>>>>
> > >>>>>>>
> > >>>>>> I guess everyone like myself is seeing this question occur regularly
> > on
> > >>>>>> this
> > >>>>>> mailing list. It's a valid question that perhaps we can dedicate a
> > >>>>>> wiki/web
> > >>>>>> page to with the pros and cons.
> > >>>>>>
> > >>>>>> I myself have many questions and can't really tell which is best for
> > our
> > >>>>>> needs at directory but I do know that I have to sit down and do the
> > >>>>>> research. However our situation is much more unique since  we back
> > >>>>>> configuration information needed to wire the server inside a
> > LDIF/LDAP
> > >>>>>> based
> > >>>>>> backing store. Lots to think about for us.
> > >>>>>>
> > >>>>>> Excuse the digression on our specific issues but regarding having a
> > page
> > >>>>>> dedicated to the pros and cons of each option at felix could benefit
> > >>>>>> many
> > >>>>>> of
> > >>>>>> our users.
> > >>>>>>
> > >>>>>> Best,
> > >>>>>> Alex
> > >>>>>>
> > >>
> > >>
> >


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