Class: Aws::Record::ItemData Private

Inherits:
Object
  • Object
show all
Defined in:
lib/aws-record/record/item_data.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.

Instance Method Summary collapse

Constructor Details

#initialize(model_attributes, opts) ⇒ ItemData

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 a new instance of ItemData.



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# File 'lib/aws-record/record/item_data.rb', line 19

def initialize(model_attributes, opts)
  @data = {}
  @clean_copies = {}
  @dirty_flags = {}
  @model_attributes = model_attributes
  @track_mutations = opts[:track_mutations]
  @track_mutations = true if opts[:track_mutations].nil?
end

Instance Method Details

#attribute_dirty!(name) ⇒ 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-record/record/item_data.rb', line 66

def attribute_dirty!(name)
  @dirty_flags[name] = true
end

#attribute_dirty?(name) ⇒ 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:

  • (Boolean) 


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# File 'lib/aws-record/record/item_data.rb', line 53

def attribute_dirty?(name)
  if @dirty_flags[name]
    true
  else
    value = get_attribute(name)
    value != @clean_copies[name]
  end
end

#attribute_was(name) ⇒ 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-record/record/item_data.rb', line 62

def attribute_was(name)
  @clean_copies[name]
end

#build_save_hash ⇒ 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-record/record/item_data.rb', line 93

def build_save_hash
  @data.inject({}) do |acc, name_value_pair|
    attr_name, raw_value = name_value_pair
    attribute = @model_attributes.attribute_for(attr_name)
    if !raw_value.nil? || attribute.persist_nil?
      db_name = attribute.database_name
      acc[db_name] = attribute.serialize(raw_value)
    end
    acc
  end
end

#clean! ⇒ 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-record/record/item_data.rb', line 40

def clean!
  @dirty_flags = {}
  @model_attributes.attributes.each_key do |name|
    populate_default_values
    value = get_attribute(name)
    if @track_mutations
      @clean_copies[name] = _deep_copy(value)
    else
      @clean_copies[name] = value
    end
  end
end

#dirty ⇒ 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-record/record/item_data.rb', line 70

def dirty
  @model_attributes.attributes.keys.inject([]) do |acc, name|
    acc << name if attribute_dirty?(name)
    acc
  end
end

#dirty? ⇒ 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:

  • (Boolean) 


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# File 'lib/aws-record/record/item_data.rb', line 77

def dirty?
  dirty.empty? ? false : true
end

#get_attribute(name) ⇒ 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-record/record/item_data.rb', line 28

def get_attribute(name)
  @model_attributes.attribute_for(name).type_cast(@data[name])
end

#hash_copy ⇒ 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-record/record/item_data.rb', line 89

def hash_copy
  @data.dup
end

#populate_default_values ⇒ 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-record/record/item_data.rb', line 105

def populate_default_values
  @model_attributes.attributes.each do |name, attribute|
    unless attribute.default_value.nil?
      if @data[name].nil? && @data[name].nil?
        @data[name] = attribute.default_value
      end
    end
  end
end

#raw_value(name) ⇒ 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-record/record/item_data.rb', line 36

def raw_value(name)
  @data[name]
end

#rollback_attribute!(name) ⇒ 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-record/record/item_data.rb', line 81

def rollback_attribute!(name)
  if attribute_dirty?(name)
    @dirty_flags.delete(name)
    set_attribute(name, attribute_was(name))
  end
  get_attribute(name)
end

#set_attribute(name, value) ⇒ 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-record/record/item_data.rb', line 32

def set_attribute(name, value)
  @data[name] = value
end