class Goldmine::Rollup
Attributes
name[R]
pivot_result[R]
proc[R]
Public Class Methods
new(name, pivot_result, block)
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# File lib/goldmine/rollup.rb, line 12 def initialize(name, pivot_result, block) @name = name @pivot_result = pivot_result @proc = block pivot_result.rollups << self end
Public Instance Methods
result(cache: false)
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# File lib/goldmine/rollup.rb, line 23 def result(cache: false) perform_caching = cache || pivot.miner.cache RollupResult.new.tap do |rollup_result| pivot_result.each do |pivot_key, pivoted_list| stash = {} if perform_caching pivot_result.rollups.each do |rollup| Array.new(2).tap do |computed_value| key = rollup.name value = RollupCleanRoom.new(key, stash).rollup(pivoted_list, &rollup.proc) if perform_caching value ||= rollup.proc.call(pivoted_list) computed_value[0] = key computed_value[1] = value (rollup_result[pivot_key] ||= []) << computed_value end end end end end
rollup(name, &block)
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# File lib/goldmine/rollup.rb, line 19 def rollup(name, &block) self.class.new(name, pivot_result, block) end