Class: Aws::DynamoDB::AttributeValue::Marshaler Private

Inherits:
Object
  • Object
show all
Defined in:
lib/aws-sdk-dynamodb/attribute_value.rb

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

Constant Summary collapse

HASHY_TEST =

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

lambda { |val| val.nil? ? false : val.respond_to?(:to_h) }
STRINGY_TEST =

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

lambda { |val| val.respond_to?(:to_str) }

Instance Method Summary collapse

Instance Method Details

#format(obj) ⇒ Object

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.


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# File 'lib/aws-sdk-dynamodb/attribute_value.rb', line 29

def format(obj)
  case obj
  when Hash
    obj.each.with_object(m:{}) do |(key, value), map|
      map[:m][key.to_s] = format(value)
    end
  when Array
    obj.each.with_object(l:[]) do |value, list|
      list[:l] << format(value)
    end
  when String then { s: obj }
  when Symbol then { s: obj.to_s }
  when STRINGY_TEST then { s: obj.to_str }
  when Numeric then { n: obj.to_s }
  when StringIO, IO then { b: obj }
  when Set then format_set(obj)
  when HASHY_TEST
    hash = obj.to_h
    hash.each.with_object(m:{}) do |(key, value), map|
      map[:m][key.to_s] = format(value)
    end
  when true, false then { bool: obj }
  when nil then { null: true }
  else
    msg = 'unsupported type, expected Hash, Array, Set, String, Numeric, '\
          "IO, true, false, or nil, got #{obj.class.name}"
    raise ArgumentError, msg
  end
end