1Xapian::ValueCountMatchUSspeyr(3C)ontributed Perl DocumeXnatpaitaino:n:ValueCountMatchSpy(3)
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NAME

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

10         use Search::Xapian qw(:all);
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12         my $db = Search::Xapian::Database->new( '[DATABASE DIR]' );
13         my $enq = $db->enquire( '[QUERY TERM]' );
14         my $spy = Search::Xapian::ValueCountMatchSpy->new(0);
15         $enq->add_matchspy($spy);
16         my $mset = $enq->get_mset(0, 10, 10000);
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18         print "Match spy registered " . $spy->get_total() . " documents\n";
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20         my $end = $spy->values_end();
21         for (my $it = $spy->values_begin(); $it != $end; $it++) {
22           print $it->get_termname() . " - " . $it->get_termfreq();
23         }
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DESCRIPTION

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

30       new Constructor. Either takes no parameters, or a single valueno
31           parameter identifying the slot.
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33       get_total
34           Return the total number of documents tallied.
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36       values_begin
37           Get an iterator over the values seen in the slot.
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39       values_end
40           End iterator corresponding to values_begin().
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42       top_values_begin <maxvalues>
43           Get an iterator over the most frequent values seen in the slot.
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45       top_values_end <maxvalues>
46           End iterator corresponding to top_values_begin().
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SEE ALSO

49       Search::Xapian, Search::Xapian::MatchSpy
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53perl v5.30.0                      2019-07-26     Xapian::ValueCountMatchSpy(3)
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