Skip to content
JRuby interface for LevelDB
Branch: master
Clone or download
Joel Segerlind
Joel Segerlind Bump version to v1.1.0
Latest commit 5415a80 Feb 16, 2016

README.md

LevelDB for JRuby

Installation

Add this line to your application's Gemfile:

gem 'leveldb-jruby', require: 'leveldb'

Usage

db = LevelDb.open('path/to/database')

# basic key operations
db.put('foo', 'bar')
puts db.get('foo') # => 'bar'
db.delete('foo')

# iterating over a range of keys
10.times { |i| db.put("foo#{i.to_s.rjust(2, '0')}", i.to_s) }
db.each(from: 'foo', to: 'foo08') do |key, value|
  puts "#{key} => #{value}"
end

# batch mutations
db.batch do |batch|
  batch.put('foo', 'bar')
  batch.delete('bar')
end

# read from a snapshot
db.put('foo', 'bar')
snapshot = db.snapshot
db.put('foo', 'baz')
puts snapshot.get('foo') # => 'bar'
puts db.get('foo') # => 'baz'

# compactions
db.compact_range(from: 'foo', to: 'foo08')
db.full_compaction

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request

License

http://opensource.org/licenses/BSD-3-Clause

You can’t perform that action at this time.