Groups > comp.lang.java.programmer > #20800

Re: Java servlet on browsers: dying or kicking ?

Date	2012-12-29 13:00 +0000
From	lipska the kat <lipskathekat@yahoo.co.uk>
Newsgroups	comp.lang.java.programmer
Subject	Re: Java servlet on browsers: dying or kicking ?
References	(4 earlier) <50dcfecc$0$292$14726298@news.sunsite.dk> <50dd5b51$0$80184$742ec2ed@news.sonic.net> <raadnU-8Z6xqRkDNnZ2dnUVZ8madnZ2d@bt.com> <50de2260$0$293$14726298@news.sunsite.dk> <JfBDs.90567$2v.68591@newsfe05.iad>
Message-ID	<idGdnWAQLIUadEPNnZ2dnUVZ7sudnZ2d@bt.com> (permalink)

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On 29/12/12 12:22, Arved Sandstrom wrote:
> On 12/28/2012 06:51 PM, Arne Vajhøj wrote:
>> On 12/28/2012 12:50 PM, lipska the kat wrote:
>>> What I inevitably end up with is a slightly less that perfect decoupling
>>> but I like to think that eventually, given the appearance of a truly
>>> scalable way to persist entire Object trees I will be able to produce a
>>> business system that will be completely decoupled from earthly
>>> considerations like UI and database
>>
>> I thought a business logic layer by definition was separate
>> from UI layer and data access layer.
>>
>> :-)
>>
>> Arne
>>
> I do such a heavy combination of SOA and web app work that I like layers
> that work for both. For my purposes Martin Fowler's Service/Application
> layer picture (http://martinfowler.com/eaaCatalog/serviceLayer.html)
> serves nicely as a starting point.
>
> In that picture business logic is mostly in the Domain/Model layer,
> including business rules, and the Service/Application layer consists of
> operations that cannot be assigned to any one given domain object.
>
> I see a good, solid Service/Application layer as being one that actually
> provides services in the SOA sense. Not web services, but _services_.
> These then become available for orchestration in different ways.

I see the _service layer_ as aggregating fine grained business methods 
behind a facade. The facade then exposes what are in effect 'atomic' 
services that implement a particular subset of the business as seen by 
the outside world. As far as external clients are concerned the 
interface to the business is clearly defined.

Martin Fowler says "[The] Service Layer defines an application's boundary"

My question is how can the orchestration of service layer services 
outside the system boundary be controlled in a way that would be 
guaranteed not to potentially break the [business] rules ?

[snip]

lipska

-- 
Lipska the Kat©: Troll hunter, sandbox destroyer
and farscape dreamer of Aeryn Sun

Thread

Java servlet on browsers: dying or kicking ? "SL@maxis" <noreply@my-rialto.com> - 2012-12-25 01:04 +0800
  Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-24 12:37 -0500
    Re: Java servlet on browsers: dying or kicking ? "SL@maxis" <ecp_gen@my-rialto.com> - 2012-12-25 04:32 +0800
      Re: Java servlet on browsers: dying or kicking ? Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2012-12-26 23:20 -0800
        Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-27 21:05 -0500
        Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-27 21:07 -0500
          Re: Java servlet on browsers: dying or kicking ? Gene Wirchenko <genew@telus.net> - 2012-12-27 21:13 -0800
            Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-28 11:07 -0500
              Re: Java servlet on browsers: dying or kicking ? Gene Wirchenko <genew@telus.net> - 2012-12-28 09:14 -0800
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-28 18:18 -0500
          Re: Java servlet on browsers: dying or kicking ? Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2012-12-28 00:41 -0800
            Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-28 11:14 -0500
            Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-12-28 17:50 +0000
              Re: Java servlet on browsers: dying or kicking ? Robert Klemme <shortcutter@googlemail.com> - 2012-12-28 21:22 +0100
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-12-28 21:08 +0000
                Re: Java servlet on browsers: dying or kicking ? Robert Klemme <shortcutter@googlemail.com> - 2012-12-28 22:55 +0100
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-28 18:02 -0500
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-12-29 08:55 +0000
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-29 20:40 -0500
                Re: Java servlet on browsers: dying or kicking ? Arved Sandstrom <asandstrom2@eastlink.ca> - 2012-12-31 20:08 -0400
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-31 19:33 -0500
              Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-28 17:51 -0500
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-12-29 11:37 +0000
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-12-29 11:39 +0000
                Re: Java servlet on browsers: dying or kicking ? Gene Wirchenko <genew@telus.net> - 2012-12-29 22:22 -0800
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-29 20:34 -0500
                Re: Java servlet on browsers: dying or kicking ? Arved Sandstrom <asandstrom2@eastlink.ca> - 2012-12-29 08:22 -0400
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-12-29 13:00 +0000
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-29 20:54 -0500
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2012-12-30 11:02 +0000
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-30 20:33 -0500
                Re: Java servlet on browsers: dying or kicking ? Arved Sandstrom <asandstrom2@eastlink.ca> - 2012-12-31 19:54 -0400
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-29 20:43 -0500
                Re: Java servlet on browsers: dying or kicking ? Arved Sandstrom <asandstrom2@eastlink.ca> - 2012-12-31 19:06 -0400
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-31 19:29 -0500
                Re: Java servlet on browsers: dying or kicking ? Martin Gregorie <martin@address-in-sig.invalid> - 2013-01-01 01:46 +0000
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2012-12-31 21:35 -0500
                Re: Java servlet on browsers: dying or kicking ? Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-01-01 09:22 -0400
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2013-01-04 19:46 -0500
                Re: Java servlet on browsers: dying or kicking ? "Richard Maher" <maher_rj@hotspamnotmail.com> - 2013-01-05 08:22 +0800
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2013-01-04 19:59 -0500
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2013-01-04 20:01 -0500
                Re: Java servlet on browsers: dying or kicking ? Martin Gregorie <martin@address-in-sig.invalid> - 2013-01-05 01:32 +0000
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2013-01-06 10:27 +0000
                Re: Java servlet on browsers: dying or kicking ? Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-01-06 10:29 -0400
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2013-01-06 16:29 +0000
                Re: Java servlet on browsers: dying or kicking ? Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-01-06 13:46 -0400
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2013-01-06 18:44 +0000
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2013-01-06 21:10 -0500
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2013-01-07 09:04 +0000
                Re: Java servlet on browsers: dying or kicking ? Lew <lewbloch@gmail.com> - 2013-01-06 09:53 -0800
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2013-01-06 18:21 +0000
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2013-01-06 21:07 -0500
                Re: Java servlet on browsers: dying or kicking ? Twirlip of the Mists <twirlip@killfile.me.now.invalid> - 2013-01-06 21:18 -0500
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2013-01-06 21:28 -0500
                Re: Java servlet on browsers: dying or kicking ? Twirlip of the Mists <twirlip@killfile.me.now.invalid> - 2013-01-06 21:58 -0500
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2013-01-06 22:04 -0500
                Re: Java servlet on browsers: dying or kicking ? Twirlip of the Mists <twirlip@killfile.me.now.invalid> - 2013-01-06 22:10 -0500
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2013-01-07 08:34 +0000
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2013-01-07 08:25 +0000
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2013-01-06 10:34 -0500
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2013-01-06 16:46 +0000
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2013-01-06 21:05 -0500
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2013-01-06 17:10 +0000
                Re: Java servlet on browsers: dying or kicking ? Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-01-06 14:04 -0400
                Re: Java servlet on browsers: dying or kicking ? Arne Vajhøj <arne@vajhoej.dk> - 2013-01-06 21:03 -0500
                Re: Java servlet on browsers: dying or kicking ? Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-01-07 07:01 -0400
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2013-01-07 11:11 +0000
                Re: Java servlet on browsers: dying or kicking ? lipska the kat <lipskathekat@yahoo.co.uk> - 2013-01-07 14:25 +0000
                Re: Java servlet on browsers: dying or kicking ? "Richard Maher" <maher_rj@hotspamnotmail.com> - 2013-01-05 08:05 +0800
  Re: Java servlet on browsers: dying or kicking ? Lew <lewbloch@gmail.com> - 2012-12-24 11:06 -0800
    Re: Java servlet on browsers: dying or kicking ? Robert Klemme <shortcutter@googlemail.com> - 2012-12-24 23:33 +0100
      Re: Java servlet on browsers: dying or kicking ? Eric Sosman <esosman@comcast-dot-net.invalid> - 2012-12-24 18:15 -0500
        Re: Java servlet on browsers: dying or kicking ? Robert Klemme <shortcutter@googlemail.com> - 2012-12-25 10:43 +0100
      Re: Java servlet on browsers: dying or kicking ? Lew <lewbloch@gmail.com> - 2012-12-25 13:21 -0800
  Re: Java servlet on browsers: dying or kicking ? Roedy Green <see_website@mindprod.com.invalid> - 2013-01-01 12:29 -0800

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