mruby wrapper for Lightning Memory-Mapped Database from Symas http://symas.com/mdb/

env = MDB::Env.new
env.open('testdb', MDB::NOSUBDIR)
db = env.database(MDB::INTEGERKEY)

db << 'hallo0' << 'hallo1' << 'hallo2'

db[18.to_bin] = 'hallo18'

db.concat ['hallo19', 'hallo20'] # for faster batch import

db.each do |k, v|
  puts "#{k.to_fix} = #{v}"
end

db.cursor(MDB::RDONLY) do |cursor|
  puts cursor.set_range(10.to_bin) # finds the exact or next larger key, see https://github.com/LMDB/lmdb/blob/LMDB_0.9.16/libraries/liblmdb/lmdb.h#L350 for more cursors.
end

puts db.first
puts db.last

puts db.stat
puts env.info
puts env.stat

Copyright 2015

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this software except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

This is using code from https://github.com/LMDB/lmdb

The OpenLDAP Public License Version 2.8, 17 August 2003

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