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Cc: "users@felix.apache.org" <users@felix.apache.org>
From: Peter Kriens <peter.kriens@aqute.biz>
Subject: Re: declarative Services
Date: Sat, 1 Jun 2013 11:27:26 +0200
To: "users@felix.apache.org" <users@felix.apache.org>

If I had to start over with the design of OSGi there would be no bundle acti=
vator, just DS components ... The activator was a mistake since it is a sing=
leton and I now sometimes wonder what we are smoking, forcing people to hand=
le their own service dependencies. DS's support services, service factories,=
 and more as well as fully handling service dependencies makes services as l=
ightweight as classes. With the DS annotations you can turn ay class into a s=
ervice (factory) whenever you want, not requiring any extra setup. I found i=
t amazing how light weight services became once I could do this.

You can control the life cycle of the component with config admin using mana=
ged service (factories). Config admin can define/override service properties=
 and define which service dependencies are bound by setting the target filte=
r.=20

With DS you do not need the dependency manager since DS handles deps for you=
.=20

Again, OSGi was not complete until DS was specified.

Kind regards,=20

    Peters Kriens

Sent from my iPad

On 1 jun. 2013, at 00:10, bokie <jms.cercas@gmail.com> wrote:

> I'm quite comfortable with OSGi and Felix but have I've never used
> Declarative Services. I've started reading up on the topic and started to
> ask my self some questions with respect to how I currently do things:
> - Are there any real benefits in using Declarative Services?
> - How does Declarative Services "integrate" with the the Configuration
> Admin?
> - How does Declarative Services "integrate" with the the Dependency Manage=
r
>=20
>=20
>=20
> --
> View this message in context: http://apache-felix.18485.x6.nabble.com/decl=
arative-Services-tp5003596.html
> Sent from the Apache Felix - Users mailing list archive at Nabble.com.
>=20
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