The IOptimizableFilter type exposes the following members.
This method determines whether a feature is to be accepted.(Inherited from IFeatureFilter.)
Returns true if this filter is disjoint from filt - that is, there is no Feature that is accepted by both filters. The empty filter is disjoint from all other filters. The all filter is disjoint from none.
Returns true if this filter is a proper subset of sup - that is, for every feature that matches this, it also matches sup. The empty filter is a proper subset of all filters. All filters are a proper subset of the all filter. All filters are proper subsets of themselves.