Hi Felix
On Tue, 28 Jul 2009 14:08:13 +0200
Felix Meschberger <[email protected]> wrote:
Felix> Hi,
Felix>
Felix> Ikuo Yamasaki schrieb:
Felix> > Dear OSGi Experts,
Felix> >
Felix> > I have another question on DS.
Felix> >
Felix> > In R4.2 cmpn Spec section "112.5.5 Factory Component" has the following
Felix> > sentence;
Felix> > ----
Felix> > The component factory, however, does not use any of the target
services and
Felix> > does not bind to them.
Felix> > ----
Felix> >
Felix> > Let me assume that factory component "c1" has reference "r1" and
Felix> > implementation class of c1 has bind method.
Felix> >
Felix> > Firstly, when c1 gets satisfied because r1 gets satisfied, SCR will
Felix> > registers a ComponentFactory service. At that time, the bind method of
Felix> > it will not be called back (because c1 is neither enabled nor activated
Felix> > yet). The sentence described above is true for this case.
Felix> >
Felix> > Socondly, when a bundle get the ComponentFactory service and calls
Felix> > enableComponent medhos of it, c1 will get enabled and activated.
Felix> > Then the bind method of c1 sill be called back and, c1 can locate
Felix> > the bound service in the bind method . (it is up to the impl of c1).
Felix> >
Felix> > Is my understanding correct ?
Felix>
Felix> AFAICT this is incorrect.
Felix>
Felix> Only when ComponentFactory.newInstance() is called will an instance of
Felix> the component c1 class be created and the service r1 be bound to that
Felix> new instance.
Oh, I miswrote the method name. (I intended to write not
"enabledComponent" but "newInstance").
My quesion should have been :
----
Let me assume that factory component "c1" has reference "r1" and
implementation class of c1 has bind method.
Firstly, when c1 gets satisfied because r1 gets satisfied, SCR will
registers a ComponentFactory service. At that time, the bind method of
it will not be called back (because c1 is notr activated
yet). The sentence described above is true for this case.
Socondly, when a bundle get the ComponentFactory service and calls
newInstance method of it, instance of c1 will be created and c1 will get
activated.
Then the bind method of c1 sill be called back and, c1 can locate
the bound service in the bind method . (it is up to the impl of c1).
Is my understanding correct ?
---------------------
NTT Cyber Solutions Laboratories
Ikuo YAMASAKI
E-mail: [email protected]
TEL +81-46-859-8537 FAX +81-46-855-1282
_______________________________________________
OSGi Developer Mail List
[email protected]
https://mail.osgi.org/mailman/listinfo/osgi-dev
