Object containing a filter expression used by the CPE to route CAS's to CasProcessor. A
CasProcessor can be configured in the CPE Descriptor to use filtering using an SQL-like WHERE
clause: where featurespec [ and featurespec2 ...]. The featurespec can be one of these four forms
and meanings:
- Feature Process CAS if the Feature is present (e.g. where Person)
- Feature! Process CAS if the Feature is not present (e.g. where Person!)
- Feature=value Process CAS if the Feature has this value( e.g. where Person=Bush)
- Feature!=value Process CAS if the Feature does not have this value (e.g. where Person!=Bush)
The featurespecs are implicitly connected with and operators and precedence rules are currently
not supported.