Support for meta-annotations

[Jim Marino]

Hi,

FYI, I have checked in support for meta-annotations. This provides the ability for applications to define their own custom annotations, which in turn define a set of standard annotations that can be reused. 

For example, the following annotation defines @Component, @Composite, @EndpointUri as well as standard JAX-RS annotations (@Consumes, @Produces):

@Component

@Composite

@EndpointUri("root")

@Consumes({MediaType.APPLICATION_JSON})

@Produces({MediaType.APPLICATION_JSON})

@java.lang.annotation.Target({java.lang.annotation.ElementType.TYPE})

@java.lang.annotation.Retention(java.lang.annotation.RetentionPolicy.RUNTIME)

public @interface Controller {

}

This annotation can be used on multiple classes to avoid having to repeat annotations, which will hopefully cut down on boilerplate code as well as provide more centralized configuration:

@Controller

public class SomeController {

...

} 

Jim

[Tomas Fecko]

usefull feature...

Dňa 29.6.2015 o 19:14 Jim Marino napísal(a):

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[Jim Marino]

Yes, I hope so. The number of annotations you have to write for all of the different libraries in frameworks is almost out-of-hand. I'm hoping this approach cuts down on the clutter and also allows people to simplify their application code. For example, you can define a meta-annotation for a binding such as ZeroMQ with configuration items and then reuse the annotation in different places.

Jim

 

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