12-19-2017
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LEARN ABOUT DEBIAN
plucene::index::reader
Plucene::Index::Reader(3pm) User Contributed Perl Documentation Plucene::Index::Reader(3pm)
NAME
Plucene::Index::Reader - Abstract class for accessing an index
DESCRIPTION
IndexReader is an abstract class, providing an interface for accessing an index. Search of an index is done entirely through this abstract
interface, so that any subclass which implements it is searchable.
Concrete subclasses of IndexReader are usually constructed with a call to the static method "open".
For efficiency, in this API documents are often referred to via document numbers, non-negative integers which each name a unique document
in the index. These document numbers are ephemeral--they may change as documents are added to and deleted from an index. Clients should
thus not rely on a given document having the same number between sessions.
METHODS
new
my $reader = Plucene::Index::Reader->new($dir_name);
This will create a new Plucene::Index::Reader with the passed in directory.
open
# If there is only one segment
my Plucene::Index::SegmentReader $seg_read = $reader->open;
# If there are many segments
my Plucene::Index::SegmentsReader $seg_read = $reader->open;
Returns an IndexReader reading the index in the given Directory.
last_modified
my $last_modified = Plucene::Index::Reader->last_modified($directory);
index_exists
if (Plucene::Index::Reader->index_exists($directory)){ ... }
is_locked
if (Plucene::Index::Reader->is_locked($directory)){ ... }
delete
$reader->delete($doc);
delete_term
$reader->delete_term($term);
This will delete all the documents which contain the passed term.
close
$reader->close;
unlock
$reader->unlock($directory);
num_docs / max_doc / document / is_deleted / norms / terms / doc_freq / term_docs / term_positions / _do_delete / _do_close
These must be defined in a subclass
perl v5.12.4 2011-08-14 Plucene::Index::Reader(3pm)