[elephant-devel] Class Heirarchies and Queries

[Red Daly]

On Tue, Sep 16, 2008 at 7:20 AM, Ian Eslick <eslick at media.mit.edu> wrote:

> There is an :inherit slot keyword option for indexed slots.  It causes
> subclasses of the defining class to share the index of the base class.  You
> can inhibit subclass sharing by re-defining the slot in the base class.  I
> found a bug in unstable and patched it so this works again.


As far as I can tell, this feature is now missing.  Am I mistaken?


>
>
> Calling map-inverted-index (and the top-level API fn's
> get-instances-by-value/range) from the base or subclasses will return
> instances for all classes that share that base index.  We could add some
> refinements such as mapping from a subclass filters out any superclass
> instances during the traversal.
>
> We can easily add a keyword arg to map-class and get-instances-by-class to
> return all subclass instances as well.
>
> Ian


Red
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