[SOLVED] Is there a way to pass a constant to an annotation in Groovy?

Is there a way to pass a constant to an annotation in Groovy?

In Java, it's possible to pass a constant String as a parameter to an annotation, but I can't figure out how to do the same in Groovy.

For example:

    @Retention(RetentionPolicy.RUNTIME)
    @Target(value=[ElementType.METHOD])
    public @interface MyGroovyAnnotation {
        String value()
    }

    class MyGroovyClass {

        public static final String VALUE = "Something"

        @MyGroovyAnnotation(value=VALUE)
        public String myMethod(String value) {
            return value    
        }
    }

Here, where the method myMethod is annotated with @MyGroovyAnnotation, if I pass a String literal like @MyGroovyAnnotation(value="Something"), it works perfectly, but if I try to pass VALUE like in the example above, I get:

From Eclipse:

Groovy:Expected 'VALUE' to be an inline constant of type java.lang.String in @MyGroovyAnnotation

Running from GroovyConsole:

expected 'VALUE' to be an inline constant of type java.lang.String not a field expression in @MyGroovyAnnotation
 at line: 20, column: 31

Attribute 'value' should have type 'java.lang.String'; but found type 'java.lang.Object' in @MyGroovyAnnotation
 at line: -1, column: -1

Does anybody have any idea what I need to do to get this to work, or if it's even possible? Thanks for any help or insight you can provide.

Solution

I ran into this same issue and Gerard's answer works, but I didn't need to make a new Constants class, just refer to the existing class.

For example:

@Retention(RetentionPolicy.RUNTIME)
@Target(value=[ElementType.METHOD])
public @interface MyGroovyAnnotation {
    String value()
}

class MyGroovyClass {

    public static final String VALUE = "Something"

    @MyGroovyAnnotation(value=MyGroovyClass.VALUE)
    public String myMethod(String value) {
        return value    
    }
}

I wanted to leave a comment on the accepted answer, but I didn't have 50 reputation.