KinoSearch::Docs::DocIUser)Contributed Perl DocumenKinoSearch::Docs::DocIDs(3)NAMEKinoSearch::Docs::DocIDs - Characteristics of KinoSearch document ids.
DESCRIPTION
Document ids are signed 32-bit integers
Document ids in KinoSearch start at 1. Because 0 is never a valid doc
id, we can use it as a sentinel value:
while ( my $doc_id = $posting_list->next ) {
...
}
Document ids are ephemeral
The document ids used by KinoSearch are associated with a single index
snapshot. The moment an index is updated, the mapping of document ids
to documents is subject to change.
Since IndexReader objects represent a point-in-time view of an index,
document ids are guaranteed to remain static for the life of the
reader. However, because they are not permanent, KinoSearch document
ids cannot be used as foreign keys to locate records in external data
sources. If you truly need a primary key field, you must define it and
populate it yourself.
Furthermore, the order of document ids does not tell you anything about
the sequence in which documents were added to the index.
COPYRIGHT AND LICENSE
Copyright 2008-2010 Marvin Humphrey
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
perl v5.14.1 2011-06-20 KinoSearch::Docs::DocIDs(3)
