Is there a way to find annotations on the type of a field?

[Christian Vogel]

Hi,

Is there a way to find annotations on the type of a field?

MutableClassDeclaration has getDeclaredFields(), which gives me a list of MutableFieldDeclaration. From a field declaration, I can get the type of the field through FieldDeclaration.getType(). I then have a TypeReference. I was expecting to be able to then call getAnnotations() on a TypeReference, but I can't.

Thanks,

Christian

[Stefan Oehme]

You can call getType on that type reference to get the referenced type declaration. There you will get the annotations.

[Christian Vogel]

Hi, I tried, but I cannot.

From a MutableFieldDeclaration field I can get the type, and the type from the type, but I do not get access to findAnnotation(), which only seems to be accessible from a MutableXXX. 

The reason I am trying to get annotations from a field type is that I am trying to detect if that field type is of some type I processed with another entity processor.

Since that processor adds an interface to the class, I tried using .isAssignableFrom, and that works, however with one caveat: suddenly the order in which classes are placed in the .xtend file start to matter. IsAssignableFrom then returns a false where it would give a true if the classes were in a reversed order.

So my fallback was to look for the annotations on the types of my fields.

[Stefan Oehme]

Sorry I forgot a part in there. You have to check whether the returned type is instanceof AnnotationTarget. Only then can you use findAnnotation. Some subclasses of Type cannot have annotations.

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[Christian Vogel]

Alright, that did work :-)