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Date: Wed, 11 May 2011 12:58:33 -0300
Message-ID: <BANLkTinyaVMA1Ld_h52cSM0_hmoxkFwcrA@mail.gmail.com>
To: Lars Schultz <lars.schultz@toolpark.com>
Cc: PHP internals <internals@lists.php.net>, Martin Scotta <martinscotta@gmail.com>
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Subject: Re: [PHP-DEV] annotations again
From: guilhermeblanco@gmail.com ("guilhermeblanco@gmail.com")

Hi Larz,

On Wed, May 11, 2011 at 4:02 AM, Lars Schultz <lars.schultz@toolpark.com> w=
rote:
> Am 10.05.2011 16:53, schrieb Martin Scotta:
>>
>> Annotations are not required, you add them if you want to.
>
> Yes. sure. But I am sure that certain Annotations must be combined to
> unleash their purpose, no? There is no validation for that, correct?
>

The patch does all compile time and runtime validations, so your
assertion is not valid.

>> Also they can be used not only with classes. You can annotate methods,
>> members, parameters (I'm not sure about the RFC scope)
>
> With the interface approach you can annotate classes, methods, members an=
d
> parameters, depending on how you build it, no? Annotating functions by
> themselves...is that really an issue? Since they're mostly stateless why
> would they need meta-data?
>
>> with "extends" you inherit implementation
>> with "traits" you inherit code
>> With annotations you inherit behavior.
>
> inheriting behaviour is just a special case of inheriting "code" as in
> traits, no?
>
>> you cannot do this with interfaces
>> <Annotation(param=3DValue)> class Class { }
>
> interface Annotation { function getParam(); }
>
>> and how do you apply an interface to a method?
>> <Deprecated> function getSomething() { }
>
> interface Annotation {
> =C2=A0 =C2=A0 =C2=A0 =C2=A0function getMethodAnnotation($method){
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0switch( $method ) =
{
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0case 'getSomething': return array('deprecated');
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0}
> =C2=A0 =C2=A0 =C2=A0 =C2=A0}
> }
>
>> All the framework/library boiler-plate should be reduced to minimum.
>
> I can't argue with that.
>
> What I just noticed is that simple examples (key=3D>value or even just
> keywords) are indeed concise and I could imagine using it this way. But f=
or
> that we have docblocs. But as soon as you go into more complex structures=
,
> more than key=3D>value which guilherme keeps arguing is so essential to t=
he
> Annotations and is also why we can't use docblocks, it gets unreadable an=
d
> especially for maintaining state within meta-data, I'd always use
> PHP-Interfaces over Annotations.
>

If you tell me that you're doing this:

class User implements PersistenceEntity
{
     // ...
}

You're coupling your Entity to an individual persistence tool.
This means you have a huge problem, because you're coupling things
that should be separated. This breaks the clean separation of concerns
that OO brings to us.

>
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>
>



--=20
Guilherme Blanco
Mobile: +55 (16) 9215-8480
MSN: guilhermeblanco@hotmail.com
S=C3=A3o Paulo - SP/Brazil