Module: Mongoid::Matcher::Expression Private

Defined in:
lib/mongoid/matcher/expression.rb

Overview

This module is part of a private API. You should avoid using this module if possible, as it may be removed or be changed in the future.

Base singleton module used for evaluating whether a given document in-memory matches an MSQL query expression.

Class Method Summary collapse

Class Method Details

.matches?(document, expr) ⇒ true | false, Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns whether a document satisfies a query expression.

Parameters:

Returns:

  • (true | false) —

    Whether the document matches.

  • (Boolean)

Raises:



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# File 'lib/mongoid/matcher/expression.rb', line 16

module_function def matches?(document, expr)
  raise Errors::InvalidQuery, 'Nil condition in expression context' if expr.nil?
  raise Errors::InvalidQuery, 'MQL query must be provided as a Hash' unless expr.is_a?(Hash)

  expr.all? do |k, expr_v|
    k = k.to_s
    if k == '$comment'
      # Nothing
      return true
    end

    if k.start_with?('$')
      ExpressionOperator.get(k).matches?(document, expr_v)
    else
      values = Matcher.extract_attribute(document, k)
      if values.length > 0
        values.any? do |v|
          FieldExpression.matches?(true, v, expr_v)
        end
      else
        FieldExpression.matches?(false, nil, expr_v)
      end
    end
  end
end