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Re: My opinion about hydra vocabulary

From: László Lajos Jánszky <laszlo.janszky@gmail.com>
Date: Fri, 6 Jun 2014 20:32:18 +0200
Message-ID: <CA+=RcCptVh3Pu4B8AnswWtecuwsHnvQhR8_KPxW-n0qi=o=Tcw@mail.gmail.com>
To: Markus Lanthaler <markus.lanthaler@gmx.net>
Cc: public-hydra@w3.org
Okay, thx.

2014-06-06 17:47 GMT+02:00 Markus Lanthaler <markus.lanthaler@gmx.net>:
> On Friday, June 06, 2014 9:29 AM, László Lajos Jánszky wrote:
>> > László, you keep forgetting to CC public-hydra@w3.org. This is important as
>> > otherwise only I will receive your messages.
>> Ohh, thanks for the advice. I sent a reply to Kingsley Idehen, but I
>> don't think you got it. Shortly it was about the demo application
> No, I never got it.
>> available here:
>> https://github.com/lanthaler/sfHydraDemoApp/blob/master/src/ML/DemoBundle/Entity/Use
>> r.php
>> . It is far from a perfect architectural approach, because you confuse
>> hydra resources with orm entities and you put presentation, business
>> logic and data access into the controller. Was all of these because
>> you wanted a fast, simple example, or is this your recommended
>> architecture?
> It is a prototype, nothing more, nothing less.
> The main point was to illustrate that it is easy to integrate Hydra in a current Web framework. While we can certainly discuss whether the architecture is perfect (is there something like a perfect architecture?), I think it is beside the point. A fact is that a lot (most?) JSON-based services are built using such an approach. The simplest way to upgrade such service is to just add a couple of annotations. That's the functionality that the HydraBundle enables and that the demo app you reference above leverages.
>> Btw. I don't think it is necessary to have resource classes and
>> objects on the server in order to handle a REST request. For example
> Definitely not. In fact, you should decouple your internal representation from the external representation as much as possible.
>> by many architectural approach (ports and adapters, onion
>> architecture, clean architecture, n-tier architecture) the REST is
>> just a delivery method which has nothing to do with the application
>> logic, it just delivers the requests to it, that's all... For me REST
>> is just another way to express operations in a web interface. For
>> example by SOAP you send `POST example.com/SayHello {subject:
>> "John"}`, by REST you send `GET
>> example.com/helloMessage?subject="John"` to get a "Hello John"
>> response. On the server side you can handle both request with a
>> `HelloController.sayHello(subject)`, and construct just the response
>> string. In this case there is no need to have a resource class like
>> HelloMessage... Maybe this is supported by hydra, I just don't
>> understand it well enough.
> Sure. Hydra certainly doesn't dictate how the server has to be implemented. It just describes the interfaces (aka service surface) the server exposes.
> HTH,
> Markus
> --
> Markus Lanthaler
> @markuslanthaler
Received on Friday, 6 June 2014 18:32:45 UTC

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