CODEWITHSUNDEEP
javaspringmodel-view-controllerwebannotations
HVT7
HVT7

Reputation: 719

Get the class on which the annotation is applied

I am building a custom annotation inside which there is a field of Class type. How do I set a value in it while using the annotation? Code is given below : 

    @Retention(RetentionPolicy.RUNTIME)
    @Target(ElementType.TYPE)
    public @interface SpringCache {
        String putIt();
        String getIt();
        Class c();
    }

This is my custom annotation. Now while I use it how do I give class to variable "c"?

    @SpringCache(putIt="I'm put", getIt="I'm get", c=<??>)
    public class TestSpringCache {
        public static void main(String[] args) {
                System.out.println();
        }
    }

As in this case I want c=TestSpringCache.class.

Upvotes: 2

Views: 430

Answers (3)

HVT7
HVT7

Reputation: 719

Actually I didn't find the solution for this. As said by many it does not seem to be possible. Though I have found a work around this.

I removed the class type and kept only String and Boolean type variable there, and to get the annotated classes I took the path from the user to the package containing classes with the defined annotation. And then for each class in the package I checked for the annotation. If annotation was present I did what I wanted to, else did nothing.

Thanks to everyone for giving your time to this.

Upvotes: 1

membersound
membersound

Reputation: 86697

You have to optain all class instances from ApplicationContext (you can inject it), ctx.getBean(). There you can check if an annotation is present.

Upvotes: 1

Jack
Jack

Reputation: 3059

You just write the class you want:

@SpringCache(putIt="I'm put", getIt="I'm get", c=TestSpringCache.class)
public class TestSpringCache {
    public static void main(String[] args) {
            System.out.println();
    }
}

You might have to add an import statement, if it is not in the same package.

Upvotes: 3

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