DataMapping - filter failure with nested structure

[greenlaw110]

With the following bean classes:

public class Foo {
    public String name;
    public int level;
    public boolean flag;
}

public class Bar {
    public String name;
    public Foo foo;
}

Given the following bean copy with filter:

Bar source = ...;
Bar target = $.deepCopy(source).filter("-foo,+foo.name").to(Bar.class);

Expected:

• target get copied from source with bar.name,bar.foo.name data copied

Found:

• an empty Bar instance