Class: Alf::Sequel::Cog

Inherits:
Object
  • Object
show all
Includes:
Compiler::Cog, Enumerable
Defined in:
lib/alf/sequel/cog.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(expr, compiler, sexpr) ⇒ Cog

Returns a new instance of Cog.



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# File 'lib/alf/sequel/cog.rb', line 7

def initialize(expr, compiler, sexpr)
  super(expr, compiler)
  @sexpr = sexpr
end

Instance Attribute Details

#sexpr ⇒ Object (readonly)

Returns the value of attribute sexpr.



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# File 'lib/alf/sequel/cog.rb', line 11

def sexpr
  @sexpr
end

Instance Method Details

#cog_orders ⇒ Object 



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# File 'lib/alf/sequel/cog.rb', line 17

def cog_orders
  [ sexpr.ordering ].compact
end

#dataset ⇒ Object 



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# File 'lib/alf/sequel/cog.rb', line 21

def dataset
  @dataset ||= Translator.new(compiler.connection).call(sexpr)
end

#each(&bl) ⇒ Object 



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# File 'lib/alf/sequel/cog.rb', line 38

def each(&bl)
  return to_enum unless block_given?
  if sexpr.is_table_dee?
    Alf::Engine::Clip.new(dataset, AttrList[:is_table_dee], true).each(&bl)
  else
    dataset.each(&bl)
  end
end

#inspect ⇒ Object 



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# File 'lib/alf/sequel/cog.rb', line 34

def inspect
  "Alf::Sequel::Cog(#{to_sql})"
end

#should_be_reused? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/alf/sequel/cog.rb', line 13

def should_be_reused?
  sexpr.should_be_reused?
end

#to_s ⇒ Object 



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# File 'lib/alf/sequel/cog.rb', line 30

def to_s
  to_sql
end

#to_sql(buffer = "") ⇒ Object 



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# File 'lib/alf/sequel/cog.rb', line 25

def to_sql(buffer = "")
  buffer << dataset.sql
  buffer
end