Class: CassandraModel::ResultReducer

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/cassandra_model/result_reducer.rb

Instance Method Summary collapse

Constructor Details

#initialize(enum, filter_keys) ⇒ ResultReducer

Returns a new instance of ResultReducer.



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# File 'lib/cassandra_model/result_reducer.rb', line 5

def initialize(enum, filter_keys)
  @enum = enum
  @filter_keys = filter_keys
end

Instance Method Details

#each(&block) ⇒ Object 



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# File 'lib/cassandra_model/result_reducer.rb', line 10

def each(&block)
  return to_enum(:each) unless block_given?

  @enum.each do |_, rows|
    if @filter_keys.one?
      yield rows.first
    elsif @filter_keys.any?
      filter_results(rows, &block)
    else
      rows.each(&block)
    end
  end
end