Class: ActiveRecord::Refined::AST::Match

Inherits:
Predicate show all
Defined in:
lib/active_record/refined/ast.rb

Overview

Regular expression match: REGEXP on MySQL, ~ on PostgreSQL. SQLite has no regexp operator built in, so Arel raises NotImplementedError there.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Predicate

#!, #&, #|

Methods inherited from Node

#as, #asc, #desc

Constructor Details

#initialize(operand, pattern, negated: false) ⇒ Match

Returns a new instance of Match.



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# File 'lib/active_record/refined/ast.rb', line 266

def initialize(operand, pattern, negated: false)
  @operand = operand
  @pattern = pattern.is_a?(Regexp) ? regexp_source(pattern) : pattern
  @negated = negated
end

Instance Attribute Details

#negated ⇒ Object (readonly)

Returns the value of attribute negated.



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# File 'lib/active_record/refined/ast.rb', line 264

def negated
  @negated
end

#operand ⇒ Object (readonly)

Returns the value of attribute operand.



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# File 'lib/active_record/refined/ast.rb', line 264

def operand
  @operand
end

#pattern ⇒ Object (readonly)

Returns the value of attribute pattern.



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# File 'lib/active_record/refined/ast.rb', line 264

def pattern
  @pattern
end

Instance Method Details

#to_arel(table) ⇒ Object 



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# File 'lib/active_record/refined/ast.rb', line 272

def to_arel(table)
  arel_operand = to_arel_operand(operand, table)
  if negated
    arel_operand.does_not_match_regexp(pattern)
  else
    arel_operand.matches_regexp(pattern)
  end
end