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# frozen_string_literal: true
module Arel # :nodoc: all
class InsertManager < Arel::TreeManager
def initialize
super
@ast = Nodes::InsertStatement.new
end
def into(table)
@ast.relation = table
self
end
def columns; @ast.columns end
def values=(val); @ast.values = val; end
def select(select)
@ast.select = select
end
def insert(fields)
return if fields.empty?
if String === fields
@ast.values = Nodes::SqlLiteral.new(fields)
else
@ast.relation ||= fields.first.first.relation
values = []
fields.each do |column, value|
@ast.columns << column
values << value
end
@ast.values = create_values values, @ast.columns
end
self
end
def create_values(values, columns)
Nodes::Values.new values, columns
end
def create_values_list(rows)
Nodes::ValuesList.new(rows)
end
end
end
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