Class: Click::Database::Models::Snapshot

Inherits:
Sequel::Model
  • Object
show all
Defined in:
lib/click/database/models/snapshot.rb

Instance Method Summary collapse

Instance Method Details

#difference(earlier) ⇒ Object 



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# File 'lib/click/database/models/snapshot.rb', line 11

def difference(earlier)
  earlier_object_count_hash = Hash[earlier.object_counts_dataset.map([:class_name, :count])]
  later_object_count_hash = Hash[object_counts_dataset.map([:class_name, :count])]

  keys = Set.new(earlier_object_count_hash.keys + later_object_count_hash.keys)

  diff = {}
  keys.each do |key|
    diff[key] = later_object_count_hash.fetch(key, 0) - earlier_object_count_hash.fetch(key, 0)
  end

  diff
end