/ 
Plucene-1.02
River stage two • 6 direct dependents • 19 total dependents
/ Plucene::Index::SegmentReader

NAME

Plucene::Index::SegmentReader - the Segment reader

SYNOPSIS

my $seg_reader = 
  Plucene::Index::SegmentReader->new( Plucene::Index::SegmentInfo $si);

my @files = $seg_reader->files;
my @terms = $seg_reader->terms;
my $doc = $seg_reader->document($id);
my $doc_freq = $seg_reader->doc_freq($term);
my $max_doc = $seg_reader->max_doc;
my $norms = $seg_reader->norms($field, $offset);

my Plucene::Index::SegmentTermDocs $docs 
	= $seg_reader->term_docs($term);

my Plucene::Index::SegmentTermPositions $pos 
	= $seg_reader->term_positions($term);
	
my Plucene::Store::InputStream $stream 
	= $seg_reader->norm_stream($field);
	
if ($seg_reader->is_deleted($id)) {  .. }
if ($seg_reader->has_deletions(Plucene::Index::SegmentInfo $si)) 
	{  ... }

DESCRIPTION

The segment reader class.

METHODS

new

my $seg_reader = 
  Plucene::Index::SegmentReader->new( Plucene::Index::SegmentInfo $si);

This will create a new Plucene::Index::SegmentReader object.

has_deletions

if ($seg_reader->has_deletions(Plucene::Index::SegmentInfo $si)) 
	{  ... }

files

my @files = $seg_reader->files;

terms

my @terms = $seg_reader->terms;

document

my $doc = $seg_reader->document($id);

is_deleted

if ($seg_reader->is_deleted($id)) {  .. }

term_docs

my Plucene::Index::SegmentTermDocs $docs 
	= $seg_reader->term_docs($term);

This will return the Plucene::Index::SegmentTermDocs object for the given term.

term_positions

my Plucene::Index::SegmentTermPositions $pos 
	= $seg_reader->term_positions($term);

This will return the Plucene::Index::SegmentTermPositions object for the given term.

doc_freq

my $doc_freq = $seg_reader->doc_freq($term);

This returns the number of documents containing the passed term.

num_docs

my $num_docs = $seg_reader->num_docs;

This is the number of documents, excluding deleted ones.

max_doc

my $max_doc = $seg_reader->max_doc;

norms

my $norms = $seg_reader->norms($field, $offset);

This returns the byte-encoded normalisation factor for the passed field. This us used by the search code to score documents.

Note we are not using the 'offset' and 'bytes' arguments per the Java. Instead, callers should use substr to put the result of "norms" into the appropriate place in a string.

norm_stream

my Plucene::Store::InputStream $stream 
	= $seg_reader->norm_stream($field);

This will return the Plucene::Store::InputStream for the passed field.