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package Plucene::Index::SegmentTermDocs; |
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=head1 NAME |
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Plucene::Index::SegmentTermDocs - Segment term docs |
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=head1 SYNOPSIS |
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my $seg_term_docs = Plucene::Index::SegmentTermDocs |
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->new(Plucene::Index::SegmentReader $seg_reader); |
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$seg_term_docs->seek($term); |
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$seg_term_docs->next; |
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$seg_term_docs->read; |
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$seg_term_docs->skip_to($target); |
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=head1 DESCRIPTION |
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This is the segment term docs class. |
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=head1 METHODS |
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=cut |
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use strict; |
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use warnings; |
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15334
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use IO::Handle; |
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144021
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1003
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use Carp qw/confess/; |
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use Plucene::Bitvector; |
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use base 'Class::Accessor::Fast'; |
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__PACKAGE__->mk_accessors( |
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qw(parent freq_stream freq_count deleted_docs doc freq)); |
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=head2 new |
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my $seg_term_docs = Plucene::Index::SegmentTermDocs |
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->new(Plucene::Index::SegmentReader $seg_reader); |
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This will create a new Plucene::Index::SegmentTermDocs object with the passed |
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segment reader. |
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=head2 parent / freq_stream / freq_count / deleted_docs / doc / freq |
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Get / set these attributes. |
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=cut |
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sub new { |
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my $self = shift; |
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my $seg_reader = shift; |
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return bless { |
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parent => $seg_reader, |
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freq_stream => $seg_reader->freq_stream, # listref |
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deleted_docs => $seg_reader->deleted_docs, |
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doc => 0, |
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} => $self; |
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} |
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=head2 seek |
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$seg_term_docs->seek($term); |
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=cut |
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sub seek { |
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33439
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33439
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1
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49529
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my ($self, $ti) = @_; |
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# I object to this, but hey. |
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33439
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if ($ti->isa("Plucene::Index::Term")) { |
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321
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1447
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$self->_seek($self->parent->{tis}->get($ti)); |
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} else { |
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33118
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94930
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$self->_seek($ti); |
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} |
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} |
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sub _seek { |
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33439
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33439
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my ($self, $ti) = @_; |
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33439
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88015
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if (!$ti) { |
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$self->freq_count(0); |
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769
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return; |
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} |
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33351
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92241
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$self->freq_count($ti->doc_freq); |
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33351
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317568
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$self->doc(0); |
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33351
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204374
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$self->{ptr} = $ti->freq_pointer; # offset in our array |
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} |
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=head2 skipping_doc |
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By default this does nothing. You may wish to override it to do something. |
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=cut |
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sub skipping_doc { } |
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sub _read_one { |
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33757
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33757
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41250
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my $self = shift; |
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33757
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85721
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my $doc_code = $self->freq_stream->[ $self->{ptr}++ ]; |
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# A sequence that smacks of overoptimization |
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33757
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181088
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$self->{doc} += $doc_code >> 1; |
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33757
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67479
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if ($doc_code & 1) { |
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19412
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47582
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$self->freq(1); |
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} else { |
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14345
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34242
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$self->freq($self->freq_stream->[ $self->{ptr}++ ]); |
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} |
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33757
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232313
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$self->{freq_count}--; |
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} |
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=head2 next |
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$seg_term_docs->next; |
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=cut |
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sub next { |
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66552
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my $self = shift; |
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78805
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while (1) { |
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66552
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155348
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return if $self->freq_count == 0; |
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194991
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$self->_read_one(); |
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last |
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33409
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105233
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unless $self->{deleted_docs} |
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&& $self->{deleted_docs}->get($self->{doc}); |
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0
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0
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$self->skipping_doc; |
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} |
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33409
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105249
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return 1; |
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} |
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=head2 read |
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$seg_term_docs->read; |
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=cut |
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# Called by TermScorer and SegmentsTermDocs |
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sub read { |
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493
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1
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786
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my $self = shift; |
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493
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751
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my (@docs, @freqs); |
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1677
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while ($self->{freq_count} > 0) { |
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2048
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$self->_read_one; |
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next |
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if $self->{deleted_docs} |
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&& $self->{deleted_docs}->get($self->{doc}); |
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push @docs, $self->doc; |
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push @freqs, $self->freq; |
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} |
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3009
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return (\@docs, \@freqs); |
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} |
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=head2 skip_to |
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$seg_term_docs->skip_to($target); |
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=cut |
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sub skip_to { |
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my ($self, $target) = @_; |
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$self->next || return 0 while $target > $self->doc; |
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return 1; |
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} |
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1; |