From: Mike Dean (mdean@bbn.com)
Date: 11/16/04
> 1. what was the design rationale for why the List builtins currently > require use of i- ? A list is an instance of rdf:List, so any property used to refer to a list must be an ObjectProperty, which requires use of an iObject. I think we just missed this subtlety in the builtin discussions. Support for lists is important for SWRL. > 2. perhaps we should define another kind of list that has d- members or > that mixes i- with d- members? That doesn't really help (I explored it as a test case). Consider a Lock with a combination property that's a list of xsd:integers. combination still needs to be an ObjectProperty. Mike
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