Add @Polymorphic [moved]

This is Issue 22 moved from a Google Code project. Added by 2010-03-31T16:32:45.000Z by scotthernandez. Please review that bug for more context and additional comments, but update this bug.

Original labels: Type-Enhancement, Priority-Medium, Milestone-Release1.1

Original description

Add support for storing (and searching on) the whole super-class tree and the interfaces implemented 
on any of them. Most likely this will be stored as an array of strings called super-classes 
(including the current class-name).

Something like this should be supported:

@Polymorphic
public class Shape {
}

public class Circle extends Shape {
}

public class Square extends Shape {
}

Datastore ds = ...;
List<Shape> shapes = ds.find(Shape.class).asList()
for(Shape shape : shapes)
  print(shape.getClass().getName());

> Circle
> Square
> Shape
> Circle
> Circle

[evanchooly]

I actually have this done in my fork that I’m working on. I’ve replaced the mapping code with the driver’s POJO stuff i helped write. It’s getting pretty close to done.

[evanchooly]

working now in 2.0 though the @Polymorphic annotation isn’t necessary.