Re: [sca-j] JAVA-65 - SCA Lifecyle proposal

[Mike Edwards <mike_edwards@uk.ibm.com>]

Folks,

First, thanks to Mark for a lot of hard
work putting this proposal material together.

When I read the proposal, my reaction
is as it had been back at the F2F meeting:

"too complex"

Basically, I cannot understand the need
for the @PostInit  and @PreDestroy methods.
Do we really need these?  What's
the use case?

I argue for a simpler model, where there
are only @Init and @Destroy methods:
- Construction occurs
- Injection occurs, Properties then
References
- @Init processing occurs

- Running - Services can be called

- @Destroy processing occurs
- Garbage collection

References are usable anytime between
invocation of the @Init method and the
termination of the @Destroy method.
 Services will ONLY be dispatched on the
instance AFTER @Init processing completes
and BEFORE @Destroy method
is invoked.

I note that initialization CAN occur
either in construction or in injection processing,
although not of the type that involves
invoking references.  Other initialization can
occur in @Init, with references available...

Why would we need anything more than
this?


Yours,  Mike.

Strategist - Emerging Technologies, SCA & SDO.
Co Chair OASIS SCA Assembly TC.
IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
Phone & FAX: +44-1962-818014    Mobile: +44-7802-467431  
Email:  mike_edwards@uk.ibm.com

From:	"Mark Combellack" <mcombellack@avaya.com>
To:	"OASIS Java" <sca-j@lists.oasis-open.org>
Date:	26/11/2008 09:50
Subject:	[sca-j] JAVA-65 - SCA Lifecyle proposal

---

Hi,
 
Here is a proposal for JAVA-65 for the SCA
component implementation lifecycle. The proposal is based on the discussions
at the recent Face to Face meeting.
 
I have taken the CD01 version of the Java
CAA specification and updated it. The main changes are:
 
Section 4 - SCA component implementation
lifecycle
New section that describes the SCA lifecycle
 
Section 9.9 - @Destroy
Added a paragraph saying not allowed to use
injected references
Added link back to the lifecycle section
 
Section 9.12 - @Destroy
Added a paragraph saying not allowed to use
injected references
Added link back to the lifecycle section
 
New section 9.14 - @PreDestroy
Describes the @PreDestroy annotation
 
New section 9.16 - @PostInit
Describes the @PostInit annotation
 
 
I look forward to receiving your comments/feedback.
 
 
Thanks,
 
Mark
Mark Combellack|
Software Developer|
Avaya |
Eastern Business
Park | St.
Mellons | Cardiff
| CF3
5EA | Voice:
+44 (0) 29 2081 7624 |
mcombellack@avaya.com
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