class ActiveLdap::Association::BelongsToMany

def delete_entries(entries)
  _foreign_class = foreign_class
  entries.each do |entry|
    entry = _foreign_class.find(entry) unless entry.is_a?(_foreign_class)
    old_value = entry[@options[:many], true]
    primary_key_name = @options[:primary_key_name]
    if primary_key_name == "dn"
      old_value = dn_values_to_string_values(old_value)
    end
    current_value = @owner[primary_key_name, true]
    current_value = dn_values_to_string_values(current_value)
    new_value = old_value - current_value
    new_value = new_value.uniq.sort
    if old_value != new_value
      entry[@options[:many]] = new_value
      entry.save
    end
  end
end

def find_target
  values = @owner[@options[:primary_key_name], true].compact
  return [] if values.empty?
  key = @options[:many]
  components = values.collect do |value|
    [key, value]
  end
  options = find_options(:filter => [:or, *components])
  foreign_class.find(:all, options)
end

def insert_entry(entry)
  old_value = entry[@options[:many], true]
  primary_key_name = @options[:primary_key_name]
  if primary_key_name == "dn"
    old_value = dn_values_to_string_values(old_value)
  end
  current_value = @owner[primary_key_name, true]
  current_value = dn_values_to_string_values(current_value)
  new_value = old_value + current_value
  new_value = new_value.uniq.sort
  if old_value != new_value
    entry[@options[:many]] = new_value
    entry.save
  end
end

def normalize_entry(entry)
  _foreign_class = foreign_class
  entry = _foreign_class.find(entry) unless entry.is_a?(_foreign_class)
  entry
end