Search::Xapian::MultiValueSorter - allows sorting by a several values.

Results are ordered by the first value. In the event of a tie, the second is used. If this is the same for both, the third is used, and so on.

  use Search::Xapian;

  my $db = new Search::Xapian::Database("/path/to/db");
  my $enq = new Search::Xapian::Enquire($db);
  my $sorter = new Search::Xapian::MultiValueSorter(1, 3, 5);
  $enq->set_sort_by_key($sorter);

new [<value>...]

Construct and add the values listed.

add <value> [<forward>]

Add another value to sort on. By default, values sort fowards, unless forward is specified and is false.

  http://www.xapian.org/docs/sourcedoc/html/classXapian_1_1MultiValueSorter.html