Works for me on the elephant-1.0 repository. You have to indicate in
the base class that subclasses will inherit its index. Then you do
get-instances-by-value/range on any class on the inherited slotname to
get all instances inheriting from the base.
Ian
On Jul 14, 2009, at 4:01 PM, Red Daly wrote:
On Tue, Sep 16, 2008 at 7:20 AM, Ian Eslick <esl...@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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