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require 'singleton'
module ActiveRelation
class Session
class << self
attr_accessor :instance
alias_method :manufacture, :new
def start
if @started
yield
else
begin
@started = true
@instance = manufacture
metaclass.send :alias_method, :new, :instance
yield
ensure
metaclass.send :alias_method, :new, :manufacture
@started = false
end
end
end
end
module CRUD
def create(insert)
insert.call(insert.engine.connection)
end
def read(select)
@read ||= Hash.new do |hash, select|
hash[select] = select.call(select.engine.connection)
end
@read[select]
end
def update(update)
update.call(update.engine.connection)
end
def delete(delete)
delete.call(delete.engine.connection)
end
end
include CRUD
module Transactions
end
include Transactions
module UnitOfWork
end
include UnitOfWork
end
end
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