Indicates a supported Operator.
The operator that is supported is indicated by the getName() field, these names are formally defined to match:
- A subclass of Filter. Examples include "BBOX" and "EqualsTo"
- A subclass of Expression or Function. Examples include "ADD" and "Length"
Each filter subclass has an associated name (such as BBOX or EqualsTo), you can use this name to determine if a matching Operator is defined as part of FilterCapabilities.
@author
Torsten Friebe
@author Jody Garnett (Refractions Research)
@todo Which relationship with Filter and expressions?
@source $URL$