amichal

  # Bulk merge a bunch of records
  # 
  # we expect most of the records to import to represent updates
  # so this method tries to be efficent with database queries
  # by using a single query to find any existing records matching the key_attributes
  # updating those records and finally inserting each remaining record
  #
  # It DOEST NOT use a transaction or lock. callers responsibilty to
  # add that if desired
  #

amichal

class ActiveRecord::Base
	# Bulk merge a bunch of records
	# 
	# we expect most of the records to import to represent updates
	# so this method tries to be efficent with database queries
	# by using a single query to find any existing records matching the key_attributes
	# updating those records and finally inserting each remaining record
	#
	# It DOEST NOT use a transaction or lock. callers responsibilty to
	# add that if desired