Module: Predicate::Match

Includes:
BinaryFunc
Defined in:
lib/predicate/nodes/match.rb

Constant Summary collapse

DEFAULT_OPTIONS = 
{
  case_sensitive: true
}

Constants included from Expr

Expr::OP_NEGATIONS

Instance Method Summary collapse

Methods included from BinaryFunc

#free_variables, #left, #priority, #right

Methods included from Expr

#!, #&, #and_split, #attr_split, #bind, #constant_variables, #constants, #contradiction?, #dyadic_priority, #identifier?, #literal?, #opaque?, #qualify, #rename, #sexpr, #tautology?, #to_hash, #to_postgres, #to_s, #to_sequel, #unqualify, #|

Methods included from Factory

#_factor_predicate, #and, #comp, #contradiction, #empty, #from_hash, #h, #has_size, #identifier, #in, #literal, #match, #native, #not, #opaque, #or, #pg_array_empty, #pg_array_literal, #pg_array_overlaps, #placeholder, #qualified_identifier, #sexpr, #tautology, #var, #vars

Instance Method Details

#case_sentitive? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/predicate/nodes/match.rb', line 13

def case_sentitive?
  options[:case_sensitive]
end

#evaluate(tuple) ⇒ Object 



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# File 'lib/predicate/nodes/match.rb', line 17

def evaluate(tuple)
  l = left.evaluate(tuple)
  r = right.evaluate(tuple)
  if l.nil? or r.nil?
    nil
  elsif l.is_a?(Regexp)
    l =~ r.to_s
  elsif r.is_a?(Regexp)
    r =~ l.to_s
  elsif options[:case_sensitive]
    l.to_s.include?(r.to_s)
  else
    l.to_s.downcase.include?(r.to_s.downcase)
  end
end

#options ⇒ Object 



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

def options
  @options ||= DEFAULT_OPTIONS.merge(self[3] || {})
end