| Implements a geometry filter.
This filter implements a relationship - of some sort - between two geometry
expressions. Note that this comparison does not attempt to restict its
expressions to be meaningful. This means that it considers itself a valid
filter as long as it contains two geometry sub-expressions. It is
also slightly less restrictive than the OGC Filter specification because
it does not require that one sub-expression be an geometry attribute and
the other be a geometry literal.
In other words, you may use this filter to compare two geometries in the
same feature, such as: attributeA inside attributeB? You may also compare
two literal geometries, although this is fairly meaningless, since it could
be reduced (ie. it is always either true or false). This approach is very
similar to that taken in the FilterCompare class.
author: Rob Hranac, TOPP author: Chris Holmes, TOPP version: $Id: GeometryFilter.java 22294 2006-10-20 00:55:40Z desruisseaux $org.opengis.filter.spatial.BinarySpatialOperator |