Description Kevin 2007-12-12 20:50:14 EST

Calling getParameterAnnotations on a IMethodBinding object from a MethodCall node *outside* the compilation unit where the called method is defined returns an empty annotation array even when annotations are defined for the parameter with the given index.  Conversely, if the MethodCall occurs in the same compilation unit as the called method, or the IMethodBinding was retrieved from a MethodDeclaration AST node, then getParameterAnnotations returns annotations where they are defined.

In the following example, calling "resolveMethodBinding().getParameterAnnotations(0)" on an AST node for "D.bar(7)" will return a 0-element array.  It should return a 1-element array with an IAnnotationBinding for @Baz.  (Notice that D.bar(int) is defined in a different compilation unit than where it is called.)

Conversely: Calling "resolveMethodBinding().getParameterAnnotations(0)" on an AST node for "C.foo(5)" will yield a 1-element array with a IAnnotationBinding for @Baz.

<<comp-unit C.java>>

public class C {

public C() {
    C.foo(5);
    D.bar(7);
}

@Baz
public void foo(@Baz int x) { ... }

}

<<comp-unit D.java>>

public class D {

@Baz
public void bar(@Baz int y) { ... }

}

<<comp-unit Baz.java>>

public @Interface Baz { }