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module ChefZero
module Solr
module Query
class UnaryOperator
def initialize(operator, operand)
@operator = operator
@operand = operand
end
def to_s
"#{operator} #{operand}"
end
attr_reader :operator
attr_reader :operand
def matches_doc?(doc)
case @operator
when "-", "NOT"
!operand.matches_doc?(doc)
when "+"
# TODO This operator uses relevance to eliminate other, unrelated
# expressions. +a OR b means "if it has b but not a, don't return it"
raise "+ not supported yet, because it is hard."
end
end
def matches_values?(values)
case @operator
when "-", "NOT"
!operand.matches_values?(values)
when "+"
# TODO This operator uses relevance to eliminate other, unrelated
# expressions. +a OR b means "if it has b but not a, don't return it"
raise "+ not supported yet, because it is hard."
end
end
end
end
end
end
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