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package Plucene::Analysis::StopAnalyzer; |
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=head1 NAME |
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Plucene::Analysis::StopAnalyzer - the stop-word analyzer |
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=head1 SYNOPSIS |
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my Plucene::Analysis::StopFilter $sf |
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= Plucene::Analysis::StopAnalyzer->new(@args); |
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=head1 DESCRIPTION |
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Filters LetterTokenizer with LowerCaseFilter and StopFilter. |
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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::Analysis::LowerCaseTokenizer; |
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use Plucene::Analysis::StopFilter; |
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use base 'Plucene::Analysis::Analyzer'; |
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my @stopwords = ( |
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"a", "and", "are", "as", "at", "be", "but", "by", |
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"for", "if", "in", "into", "is", "it", "no", "not", |
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"of", "on", "or", "s", "such", "t", "that", "the", |
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"their", "then", "there", "these", "they", "this", "to", "was", |
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"will", "with" |
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); |
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=head2 tokenstream |
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my Plucene::Analysis::StopFilter $sf |
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= Plucene::Analysis::StopAnalyzer->new(@args); |
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Filters LowerCaseTokenizer with StopFilter. |
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=cut |
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sub tokenstream { |
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my $self = shift; |
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return Plucene::Analysis::StopFilter->new({ |
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input => Plucene::Analysis::LowerCaseTokenizer->new(@_), |
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stoplist => \@stopwords |
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}); |
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} |
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1; |