Module: Predicate::Native

Includes:
Expr
Defined in:
lib/predicate/nodes/native.rb

Constant Summary

Constants included from Expr

Expr::OP_NEGATIONS

Instance Method Summary collapse

Methods included from Expr

#!, #&, #constant_variables, #constants, #contradiction?, #dyadic_priority, #identifier?, #literal?, #opaque?, #qualify, #rename, #sexpr, #tautology?, #to_s, #to_sequel, #|

Methods included from Factory

#and, #between, #comp, #contradiction, #from_hash, #identifier, #in, #intersect, #literal, #match, #native, #not, #opaque, #or, #qualified_identifier, #tautology

Instance Method Details

#and_split(attr_list) ⇒ Object

overriden because parent relies on free_variables, which raises an exception



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# File 'lib/predicate/nodes/native.rb', line 15

def and_split(attr_list)
  # I possibly make references to those attributes, so
  # I can't be P2
  [ self, tautology ]
end

#attr_split ⇒ Object

overriden because parent relies on free_variables, which raises an exception



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# File 'lib/predicate/nodes/native.rb', line 23

def attr_split
  { nil => self }
end

#evaluate(tuple) ⇒ Object 



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# File 'lib/predicate/nodes/native.rb', line 27

def evaluate(tuple)
  proc.call(tuple)
end

#free_variables ⇒ Object

Raises:



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# File 'lib/predicate/nodes/native.rb', line 31

def free_variables
  raise NotSupportedError
end

#priority ⇒ Object 



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# File 'lib/predicate/nodes/native.rb', line 5

def priority
  90
end

#proc ⇒ Object 



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# File 'lib/predicate/nodes/native.rb', line 9

def proc
  self[1]
end