Module: MongoQL::StringOperators

Included in:
Expression
Defined in:
lib/mongo_ql/string_operators.rb

Instance Method Summary collapse

Instance Method Details

#concat(*expressions) ⇒ Object 



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# File 'lib/mongo_ql/string_operators.rb', line 20

def concat(*expressions)
  Expression::MethodCall.new "$concat", self, ast_template: -> (target, **_args) {
    [target, *expressions.map { |e| to_expression(e) }]
  }
end

#substr(start, length) ⇒ Object 



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# File 'lib/mongo_ql/string_operators.rb', line 5

def substr(start, length)
  Expression::MethodCall.new "$substr", self, ast_template: -> (target, **_args) {
    [target, to_expression(start), to_expression(length)]
  }
end

#trim(chars) ⇒ Object 



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# File 'lib/mongo_ql/string_operators.rb', line 11

def trim(chars)
  Expression::MethodCall.new "$trim", self, ast_template: -> (target, **_args) {
    {
      "input" => target,
      "chars" => to_expression(chars)
    }
  }
end