Tie::LevelDB - A Perl Interface to the Google LevelDB NoSQL database
use Tie::LevelDB; tie my %hash, 'Tie::LevelDB', "/tmp/testdb"; # Use the %hash array untie %hash; -- OR -- use Tie::LevelDB; my $db = new Tie::LevelDB::DB("/tmp/testdb"); $db->Put("Google","Don't be evil!"); print $db->Get("Google")."\n"; $db->Delete("Google"); my $batch = new Tie::LevelDB::WriteBatch; $batch->Delete("Google"); $batch->Put("Microsoft","Where Do you Want to Go Today?"); $db->Write($batch); my $it = $db->NewIterator; for($it->SeekToFirst;$it->Valid;$it->Next) { print $it->key.": ".$it->value."\n"; }
Tie::LevelDB is the Perl Interface for Google NoSQL database called LevelDB. See http://code.google.com/p/leveldb/ for more details.
Interface is implemented both as a reflection of an original LevelDB C++ API and a Perl-ish TIEHASH mechanism.
None by default.
LevelDB does not support storing of undef values. If undef is stored, the key is deleted instead.
undef
deleted
Only text keys and values (i.e., without '\0' character) are supported.
Perl support for Options specification is not covered.
To use SNAPPY compression method, install it from http://code.google.com/p/snappy first and then (re-)compile this module.
LevelDB sources (version 2011-07-29) are bundled with this packages.
http://code.google.com/p/leveldb/, DB_File(3), tie.
Martin Sarfy, <martin.sarfy@sokordia.cz>
Copyright (C) 2011 by Sokordia, s.r.o., http://www.sokordia.cz
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.10.1 or, at your option, any later version of Perl 5 you may have available.
To install Tie::LevelDB, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Tie::LevelDB
CPAN shell
perl -MCPAN -e shell install Tie::LevelDB
For more information on module installation, please visit the detailed CPAN module installation guide.