# File sql-list.rb, line 23
  def initialize (classname, dbi)
    @dbi = dbi
    @classname = classname.dup
    @classname.untaint
    @classname.sub!(/#<Module .*?>::/, "")
    # create a dummy instance
    @dummy = instance_eval(@classname + ".new")
    # fetch the primary key name for this class
    @symbol = @dummy.instance_eval("@sql_primary_key.id2name")
  end