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module Arel
module Nodes
class Unary < Arel::Nodes::Node
attr_accessor :expr
alias :value :expr
def initialize expr
@expr = expr
end
def hash
@expr.hash
end
def eql? other
self.class == other.class &&
self.expr == other.expr
end
alias :== :eql?
end
%w{
Bin
Group
Having
Limit
Not
Offset
On
Ordering
Top
Lock
DistinctOn
}.each do |name|
const_set(name, Class.new(Unary))
end
end
end
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