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package Plucene::Index::SegmentTermEnum; |
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=head1 NAME |
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Plucene::Index::SegmentTermEnum - Segment term enum |
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=head1 SYNOPSIS |
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my $seg_term_enum = Plucene::Index::SegmentTermEnum |
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->new( Plucene::Store::InputStream $i, |
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Plucene::Index::FieldInfos $fi, |
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$is_index); |
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my $clone = $seg_term_info->clone; |
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my Plucene::Index::Term $term = $seg_term_enum->read_term; |
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$seg_term_info->seek($ptr, $position, $term, $term_info); |
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$seg_term_enum->prev; |
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$seg_term_enum->next; |
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=head1 DESCRIPTION |
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This is the segment term enum 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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use Plucene::Index::TermInfo; |
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10035
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use Plucene::Index::Term; |
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use base 'Class::Accessor::Fast'; |
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__PACKAGE__->mk_accessors(qw(term term_info index_pointer size position)); |
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=head2 new |
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my $seg_term_enum = Plucene::Index::SegmentTermEnum |
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->new( Plucene::Store::InputStream $i, |
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Plucene::Index::FieldInfos $fi, |
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$is_index); |
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=head2 term / term_info / index_pointer / size / position |
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/ doc_freq / freq_pointer / prox_pointer |
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Get / set these attributes. |
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=cut |
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sub doc_freq { shift->{term_info}->doc_freq(@_) } |
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sub freq_pointer { shift->{term_info}->freq_pointer(@_) } |
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sub prox_pointer { shift->{term_info}->prox_pointer(@_) } |
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# term_info must return a clone |
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sub new { |
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1090
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1090
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my ($class, $i, $fis, $is_i) = @_; |
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1090
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6649
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bless { |
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input => $i, |
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field_infos => $fis, |
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is_index => $is_i, |
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position => -1, |
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term => Plucene::Index::Term->new(), |
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term_info => Plucene::Index::TermInfo->new(), |
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size => $i->read_int |
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}, $class; |
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} |
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=head2 clone |
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my $clone = $seg_term_info->clone; |
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=cut |
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sub clone { |
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my $self = shift; |
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my $clone = bless { %$self, input => $self->{input}->clone, }, ref $self; |
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$clone->{buffer} = $self->{term}->text if $self->{term}; |
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3191
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return $clone; |
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} |
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=head2 seek |
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$seg_term_info->seek($ptr, $position, $term, $term_info); |
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=cut |
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sub seek { |
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my ($self, $ptr, $p, $t, $ti) = @_; |
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$self->{input}->seek($ptr, 0); |
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$self->{position} = $p; |
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$self->{term} = $t; |
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undef $self->{prev}; |
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$self->{term_info} = $ti->clone; |
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$self->{buffer} = $t->text; |
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} |
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=head2 prev / next |
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$seg_term_enum->prev; |
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$seg_term_enum->next; |
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=cut |
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sub prev { return $_[0]->{prev} } |
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sub next { |
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my $self = shift; |
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199840
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if ($self->{position}++ >= $self->{size} - 1) { |
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undef $self->{term}; |
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return; |
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} |
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69226
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$self->{prev} = $self->{term}; |
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$self->{term} = $self->read_term(); |
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$self->{term_info}->{doc_freq} = $self->{input}->read_vint; |
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$self->{term_info}->{freq_pointer} += $self->{input}->read_vlong; |
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$self->{term_info}->{prox_pointer} += $self->{input}->read_vlong; |
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$self->{index_pointer} += $self->{input}->read_vlong if $self->{is_index}; |
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69226
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return 1; |
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} |
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=head2 read_term |
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my Plucene::Index::Term $term = $seg_term_enum->read_term; |
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=cut |
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sub read_term { |
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my $self = shift; |
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my $start = $self->{input}->read_vint(); |
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my $length = $self->{input}->read_vint(); |
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$self->{buffer} ||= " " x $length; |
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$self->{input}->read(substr($self->{buffer}, $start, $length), $length); |
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$self->{buffer} = substr($self->{buffer}, 0, $start + $length); |
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return bless { |
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text => $self->{buffer}, |
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field => $self->{field_infos}->field_name($self->{input}->read_vint), |
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} => 'Plucene::Index::Term'; |
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} |
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1; |