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Contents
module Picky
module Query
# Combinations represent an ordered list of Combination s.
#
# Combinations contain methods for calculating score (including
# the boost) and ids for each of its Combination s.
#
# They are the core of an Allocation.
# An Allocation consists of a number of Combinations.
#
class Combinations
attr_reader :combinations
forward :empty?,
:inject,
:to => :@combinations
def initialize combinations = []
@combinations = combinations
end
# Sums up the weights of the combinations.
#
# Note: Optimized sum(&:weight) away – ~3% improvement.
#
def score
@combinations.inject(0) { |total, combination| total + combination.weight }
end
def boost_for weights
weights.boost_for @combinations
end
# Filters the tokens and categories such that categories
# that are passed in, are removed.
#
# Note: This method is not totally independent of the calculate_ids one.
# Since identifiers are only nullified, we need to not include the
# ids that have an associated identifier that is nil.
#
def remove categories = []
# TODO Do not use the name, but the category.
#
@combinations.reject! { |combination| categories.include?(combination.category.name) }
end
#
#
def to_result
@combinations.map &:to_result
end
def to_qualifiers
@combinations.map &:category_name
end
#
#
def to_s
@combinations.to_s
end
end
end
end
Version data entries
15 entries across 15 versions & 1 rubygems