2012/5/21 Brett Porter <br...@apache.org>:
>
> On 21/05/2012, at 9:03 PM, Olivier Lamy wrote:
>
>> 2012/5/21 Brett Porter <br...@apache.org>:
>>>
>>> On 21/05/2012, at 3:45 AM, Hervé BOUTEMY wrote:
>>>
>>>> here, the end-user is a plugin developer, then someone who should be able 
>>>> to
>>>> create a (Plexus) component when necessary
>>>>
>>>> Yes, I liked @Component too but as soon as you write a component and inject
>>>> somponents inside it, you discover the discrepency: the more I work on 
>>>> this,
>>>> the more I discover these little discrepencies that lost me for a long 
>>>> time.
>>>> Notice that the target is JSR330 @Inject.
>>>> Is it too early to use @Inject?
>>>
>>> Agree - I didn't think @component (the Javadoc annotation) would carry over 
>>> to the plugin annotation. It should just use @Inject if that's feasible.
>> Yup possible
>>   @Inject
>>   @Named( value = "maven" )
>>   protected ArtifactMetadataSource artifactMetadataSource;
>>
>> But not possible anymore for
>> @Component( role = ArtifactMetadataSource.class, roleHint = "maven" )
>> protected Object artifactMetadataSource;
>>
>> but not sure it's a real problem for this "feature" :-)
>>
>> But again we use annotations here only for plugin metadata generation
>> and not at runtime.
>>
>> Maybe in the future we could handle @Inject at runtime level.
>>
>> But IMHO classpath scanning at runtime to find various annotations
>> will have a huge performance impact whereas simply reading the xml
>> plugin descriptor is fast.
>> And that's what we need with a tool such Maven fast startup/execution.
>
> I'm way behind on some of this stuff, but I thought the Maven side scanned 
> these at build time and constructed the component metadata - so you have both 
> available. The plugin processor would do the same... Olivier?

Yup even with annotations everything is done in maven-plugin-plugin
which generate plugin descriptor.
Nothing is done at maven execution time (as we will need some core
changes for that) and IMHO this could slow execution.

>
> - Brett
>
> --
> Brett Porter
> br...@apache.org
> http://brettporter.wordpress.com/
> http://au.linkedin.com/in/brettporter
> http://twitter.com/brettporter
>
>
>
>
>
>
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-- 
Olivier Lamy
Talend: http://coders.talend.com
http://twitter.com/olamy | http://linkedin.com/in/olamy

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