Class: Bmg::Relation::Spied

Inherits:
Object
  • Object
show all
Includes:
Operator::Unary
Defined in:
lib/bmg/relation/spied.rb

Instance Method Summary collapse

Methods included from Operator::Unary

#bind

Methods included from Operator

#inspect, #to_s

Methods included from Bmg::Relation

#_count, #bind, #debug, empty, #empty?, new, #one, #one_or_nil, #to_csv, #to_json, #to_xlsx, #visit, #with_type, #with_type_attrlist, #with_typecheck, #without_typecheck, #y_by_x, #ys_by_x

Methods included from Algebra

#allbut, #autosummarize, #autowrap, #constants, #extend, #group, #image, #join, #left_join, #matching, #materialize, #not_matching, #page, #project, #rename, #restrict, #spied, #summarize, #transform, #ungroup, #union, #unwrap

Methods included from Algebra::Shortcuts

#cross_product, #exclude, #image, #images, #join, #left_join, #matching, #not_matching, #prefix, #rxmatch, #suffix, #ungroup, #unwrap, #where

Constructor Details

#initialize(operand, spy) ⇒ Spied

Returns a new instance of Spied.



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# File 'lib/bmg/relation/spied.rb', line 6

def initialize(operand, spy)
  @operand = operand
  @spy = spy
end

Instance Method Details

#count ⇒ Object 



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# File 'lib/bmg/relation/spied.rb', line 39

def count
  if spy.respond_to?(:measure)
    spy.measure(self) do
      operand.count
    end
  else
    spy.call(self)
    operand.count
  end
end

#delete(*args, &bl) ⇒ Object 



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# File 'lib/bmg/relation/spied.rb', line 75

def delete(*args, &bl)
  operand.delete(*args, &bl)
end

#each(&bl) ⇒ Object 



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# File 'lib/bmg/relation/spied.rb', line 26

def each(&bl)
  return enum_for(:each) unless bl

  if spy.respond_to?(:measure)
    spy.measure(self) do
      operand.each(&bl)
    end
  else
    spy.call(self)
    operand.each(&bl)
  end
end

#insert(*args, &bl) ⇒ Object 



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# File 'lib/bmg/relation/spied.rb', line 71

def insert(*args, &bl)
  operand.insert(*args, &bl)
end

#to_ast ⇒ Object 



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# File 'lib/bmg/relation/spied.rb', line 50

def to_ast
  [ :spied, operand.to_ast, spy ]
end

#type ⇒ Object 



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# File 'lib/bmg/relation/spied.rb', line 17

def type
  operand.type
end

#unspied ⇒ Object 



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# File 'lib/bmg/relation/spied.rb', line 65

def unspied
  operand
end

#update(*args, &bl) ⇒ Object 



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# File 'lib/bmg/relation/spied.rb', line 79

def update(*args, &bl)
  operand.update(*args, &bl)
end