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Contents
=begin
Copyright 2010-2013 Tasos Laskos <tasos.laskos@gmail.com>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file 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.
=end
require_relative '../cache'
module Arachni
module Support::LookUp
#
# Opposite of Bloom a filter, ergo Moolb.
#
# Basically a cache used for look-up operations.
#
# @author Tasos "Zapotek" Laskos <tasos.laskos@gmail.com>
#
class Moolb < Base
DEFAULT_OPTIONS = {
strategy: Support::Cache::RandomReplacement,
max_size: 100_000
}
# @param [Hash] options
# @option options [Support::Cache::Base] :strategy (Support::Cache::RandomReplacement)
# Sets the type of cache to use.
#
# @option options [Integer] :max_size (100_000)
# Maximum size of the cache.
#
# @see DEFAULT_OPTIONS
#
def initialize( options = {} )
super( options )
@options.merge!( DEFAULT_OPTIONS.merge( options ) )
@collection = @options[:strategy].new( @options[:max_size] )
end
#
# @param [#persistent_hash] item item to insert.
#
# @return [HashSet] self
#
def <<( item )
@collection[calculate_hash( item )] = true
self
end
alias :add :<<
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems