[Zope] Zcatalog: indexing on list attributes?

[Oliver Bleutgen]

> Eric Casteleijn wrote:
> So basically using a multiple selection property in a ZClass makes that
> property unindexable? Wish i'd known that. The problem is my ZClass is
> alreday created and populated. Is there any chance of a solution other
> than
> deleting the property, adding it again as a lines or tokens type and
> reinserting all the values?

Hmm,

couldn't you do something like

http://www.zope.org/Members/kusako/AdvancedCataloging

explains?

i.e. just add a method to you zclass which converts the
multiple selection property into the right type and returns that?
And the just add the name of that method as a keyword index.

cheers,
oliver