Class: Terrestrial::Dataset

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/terrestrial/dataset.rb

Instance Method Summary collapse

Constructor Details

#initialize(records) ⇒ Dataset

Returns a new instance of Dataset.



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# File 'lib/terrestrial/dataset.rb', line 5

def initialize(records)
  @records = records
end

Instance Method Details

#each(&block) ⇒ Object 



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# File 'lib/terrestrial/dataset.rb', line 12

def each(&block)
  records.each(&block)
  self
end

#select(field) ⇒ Object 



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# File 'lib/terrestrial/dataset.rb', line 31

def select(field)
  map { |data| data.fetch(field) }
end

#where(criteria) ⇒ Object 



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# File 'lib/terrestrial/dataset.rb', line 17

def where(criteria)
  new(
    records.find_all { |row|
      criteria.all? { |k, v|
        if v.respond_to?(:include?)
          test_inclusion_in_value(row, k, v)
        else
          test_equality(row, k, v)
        end
      }
    }
  )
end