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module Arel
module Predications
def as other
Nodes::As.new self, other
end
def not_eq other
Nodes::NotEqual.new self, other
end
def not_eq_any others
grouping_any :not_eq, others
end
def not_eq_all others
grouping_all :not_eq, others
end
def eq other
Nodes::Equality.new self, other
end
def eq_any others
grouping_any :eq, others
end
def eq_all others
grouping_all :eq, others
end
def in other
case other
when Arel::SelectManager
Arel::Nodes::In.new(self, other.ast)
when Range
if other.exclude_end?
left = Nodes::GreaterThanOrEqual.new(self, other.begin)
right = Nodes::LessThan.new(self, other.end)
Nodes::And.new left, right
else
Nodes::Between.new(self, Nodes::And.new(other.begin, other.end))
end
else
Nodes::In.new self, other
end
end
def in_any others
grouping_any :in, others
end
def in_all others
grouping_all :in, others
end
def not_in other
case other
when Arel::SelectManager
Arel::Nodes::NotIn.new(self, other.ast)
when Range
if other.exclude_end?
left = Nodes::LessThan.new(self, other.begin)
right = Nodes::GreaterThanOrEqual.new(self, other.end)
Nodes::Or.new left, right
else
left = Nodes::LessThan.new(self, other.begin)
right = Nodes::GreaterThan.new(self, other.end)
Nodes::Or.new left, right
end
else
Nodes::NotIn.new self, other
end
end
def not_in_any others
grouping_any :not_in, others
end
def not_in_all others
grouping_all :not_in, others
end
def matches other
Nodes::Matches.new self, other
end
def matches_any others
grouping_any :matches, others
end
def matches_all others
grouping_all :matches, others
end
def does_not_match other
Nodes::DoesNotMatch.new self, other
end
def does_not_match_any others
grouping_any :does_not_match, others
end
def does_not_match_all others
grouping_all :does_not_match, others
end
def gteq right
Nodes::GreaterThanOrEqual.new self, right
end
def gteq_any others
grouping_any :gteq, others
end
def gteq_all others
grouping_all :gteq, others
end
def gt right
Nodes::GreaterThan.new self, right
end
def gt_any others
grouping_any :gt, others
end
def gt_all others
grouping_all :gt, others
end
def lt right
Nodes::LessThan.new self, right
end
def lt_any others
grouping_any :lt, others
end
def lt_all others
grouping_all :lt, others
end
def lteq right
Nodes::LessThanOrEqual.new self, right
end
def lteq_any others
grouping_any :lteq, others
end
def lteq_all others
grouping_all :lteq, others
end
def asc
Nodes::Ordering.new self, :asc
end
def desc
Nodes::Ordering.new self, :desc
end
private
def grouping_any method_id, others
first = send method_id, others.shift
Nodes::Grouping.new others.inject(first) { |memo,expr|
Nodes::Or.new(memo, send(method_id, expr))
}
end
def grouping_all method_id, others
first = send method_id, others.shift
Nodes::Grouping.new others.inject(first) { |memo,expr|
Nodes::And.new(memo, send(method_id, expr))
}
end
end
end
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