Constants
CONTAINS = PredicateOperator.new("CONTAINS")
CONTAINS_IGNORE_CASE = PredicateOperator.new("CONTAINS_IGNORE_CASE")
DOES_NOT_CONTAIN = PredicateOperator.new("DOES_NOT_CONTAIN")
DOES_NOT_CONTAIN_IGNORE_CASE = PredicateOperator.new("DOES_NOT_CONTAIN_IGNORE_CASE")
EQUALS = PredicateOperator.new("EQUALS")
GREATER_THAN = PredicateOperator.new("GREATER_THAN")
GREATER_THAN_EQUALS = PredicateOperator.new("GREATER_THAN_EQUALS")
IN = PredicateOperator.new("IN")
LESS_THAN = PredicateOperator.new("LESS_THAN")
LESS_THAN_EQUALS = PredicateOperator.new("LESS_THAN_EQUALS")
NOT_EQUALS = PredicateOperator.new("NOT_EQUALS")
NOT_IN = PredicateOperator.new("NOT_IN")
STARTS_WITH = PredicateOperator.new("STARTS_WITH")
STARTS_WITH_IGNORE_CASE = PredicateOperator.new("STARTS_WITH_IGNORE_CASE")
UNKNOWN = PredicateOperator.new("UNKNOWN")