BBOX 
Spatial operator that evaluates to true when the bounding
box of the feature's geometry overlaps the bounding box provided in this object's properties.

BBOX3D 
An extension to the general BBOX filter for supporting 3D Bounding Boxes that have a minimum and
maximum Zvalue.

Beyond 
Concrete distance buffer operator that evaluates as
true when all of a feature's geometry lies beyond (i.e. is more distant) than the given distance
from this object's geometry.

BinarySpatialOperator 
Abstract superclass for filter operators that perform some sort of spatial comparison on two
geometric objects.

BoundedSpatialOperator 
Marker interface for spatial operators that are a subset of the BBOX relationship.

Contains 

Crosses 
Concrete binary spatial operator that evaluates to
true if the first geometric operand crosses the second (in the sense defined by the OGC Simple
Features specification).

Disjoint 
Concrete binary spatial operator that evaluates to
true if the first operand is disjoint from the second (in the sense defined in the OGC Simple
Features specification).

DistanceBufferOperator 
Abstract superclass for spatial operators that check that one shape satisfies some relation to a
buffer around another shape.

DWithin 
Concrete distance buffer operator that evaluates as true when
any part of the first geometry lies within the given distance of the second geometry.

Equals 

Intersects 

Overlaps 
Concrete binary spatial operator that evaluates to
true if the interior of the first geometry somewhere overlaps the interior of the second
geometry.

SpatialOperator 
Abstract base class for operators that perform a spatial comparison on geometric attributes of a
feature.

Touches 
Concrete binary spatial operator that evaluates to
true if the feature's geometry touches, but does not overlap with the geometry held by this
object.

Within 
Concrete binary spatial operator that evaluates to
true if the feature's geometry is completely contained by the constant geometry held by this
object.
