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Date: Tue, 8 Mar 2011 04:11:47 -0800 (PST)
From: Erdinc <kocamane@yahoo.com>
Reply-To: Erdinc <kocamane@yahoo.com>
Subject: Re: DI example
To: "user@cayenne.apache.org" <user@cayenne.apache.org>
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I didn't have clear understanding of what runtime or module is. Thank you f=
or your reply.=0A=0A=0AFrom: Andrus Adamchik <andrus@objectstyle.org>=0ATo:=
 user@cayenne.apache.org=0ASent: Tuesday, March 8, 2011 1:30 PM=0ASubject: =
Re: DI example=0A=0A=0AOn Mar 8, 2011, at 1:13 PM, Erdinc wrote:=0A> You me=
an in order to use DI you should add a custom runtime class extending Cayen=
neRuntime. =0A=0ANo. Quite the contrary. There shouldn't be a need to exten=
d CayenneRuntime (or ServerRuntime for that matter). If you need to add new=
 "services" or override the existing ones, you write a custom module and pa=
ss it over to the runtime constructor. So extending Cayenne DI container is=
 trivial:=0A=0Aclass MyModule implements Module {=0A=A0 public void configu=
re(Binder binder) { }=0A}=0A=0AServerRuntime r =3D new ServerRuntime("xyz-c=
ayenne.xml", new MyModule());=0A=0A> I want to inject beans into the cayenn=
e entity beans. In order to do this, I added a listener class;=0A=0AOk I se=
e, Cayenne DI itself is not intended for that. I mean, you can use it for D=
ataObject injection, but this was not why we added it. So yeah, if you want=
 to inject "services" in your objects, use lifecycle callbacks. As a matter=
 of fact 3.1M2 will help you a lot to implement that. I am now writing a re=
lease announcement with some of this highlighted. But please take a look at=
 this page:=0A=0Ahttp://cayenne.apache.org/doc/guide-to-31-features.html#Gu=
ideto3.1Features-LifecycleExtensions =0A=0ADataChannelFilter combined with =
@PostLoad/@PostAdd and a custom entity annotation should help you with this=
. And maybe someday we'll add DataObject injection into cayenne-lifecycle e=
xtensions module.=0A=0AAndrus=0A=0A=0A      
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