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Xapian::ValueCountMatchSpy(3) User Contributed Perl Documentation Xapian::ValueCountMatchSpy(3)
 

Search::Xapian::ValueCountMatchSpy - Class for counting the frequencies of values in the matching documents.

  use Search::Xapian qw(:all);
  my $db = Search::Xapian::Database->new( '[DATABASE DIR]' );
  my $enq = $db->enquire( '[QUERY TERM]' );
  my $spy = Search::Xapian::ValueCountMatchSpy->new(0);
  $enq->add_matchspy($spy);
  my $mset = $enq->get_mset(0, 10, 10000);
  print "Match spy registered " . $spy->get_total() . " documents\n";
  my $end = $spy->values_end();
  for (my $it = $spy->values_begin(); $it != $end; $it++) {
    print $it->get_termname() . " - " . $it->get_termfreq();
  }

Class for counting the frequencies of values in the matching documents. Wraps Xapian::ValueCountMatchSpy

new
Constructor. Either takes no parameters, or a single valueno parameter identifying the slot.
get_total
Return the total number of documents tallied.
values_begin
Get an iterator over the values seen in the slot.
values_end
End iterator corresponding to values_begin().
top_values_begin <maxvalues>
Get an iterator over the most frequent values seen in the slot.
top_values_end <maxvalues>
End iterator corresponding to top_values_begin().

Search::Xapian, Search::Xapian::MatchSpy
2018-07-09 perl v5.28.1

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