new

# File activerecord/lib/active_record/connection_adapters/abstract_adapter.rb, line 44
      def initialize(connection, logger = nil) #:nodoc:
        @active = nil
        @connection, @logger = connection, logger
        @query_cache_enabled = false
        @query_cache = Hash.new { |h,sql| h[sql] = {} }
        @instrumenter = ActiveSupport::Notifications.instrumenter
        @visitor = nil
      end