Class: Groonga::ExpressionBuildable::CallExpressionBuilder

Inherits:
ExpressionBuilder show all
Defined in:
lib/groonga/expression-builder.rb

Instance Method Summary collapse

Methods inherited from ExpressionBuilder

#&, #-, #|

Constructor Details

#initialize(function, *arguments) ⇒ CallExpressionBuilder

Returns a new instance of CallExpressionBuilder.



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# File 'lib/groonga/expression-builder.rb', line 491

def initialize(function, *arguments)
  super()
  @function = function
  @arguments = arguments
end

Instance Method Details

#build(expression, variable) ⇒ Object 



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# File 'lib/groonga/expression-builder.rb', line 497

def build(expression, variable)
  expression.append_object(@function)
  @arguments.each do |argument|
    case argument
    when String, Integer, Time
      expression.append_constant(argument)
    when ::Hash
      expression.append_object(argument)
    else
      argument.build(expression, variable)
    end
  end
  expression.append_operation(Operation::CALL, @arguments.size)
end