Class: Dynamoid::Transactions::Mutation::DeleteWithInstance

Inherits:
Base
  • Object
show all
Defined in:
lib/dynamoid/transactions/mutation/delete_with_instance.rb

Instance Method Summary collapse

Methods inherited from Base

validate_attribute_names!

Constructor Details

#initialize(model) ⇒ DeleteWithInstance

Returns a new instance of DeleteWithInstance.



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# File 'lib/dynamoid/transactions/mutation/delete_with_instance.rb', line 11

def initialize(model)
  super()

  @model = model
  @model_class = model.class
end

Instance Method Details

#aborted? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dynamoid/transactions/mutation/delete_with_instance.rb', line 31

def aborted?
  false
end

#action_requests ⇒ Object 



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# File 'lib/dynamoid/transactions/mutation/delete_with_instance.rb', line 43

def action_requests
  builder = Builders::DeleteRequestBuilder.new(@model_class)
  builder.hash_key = dump_attribute(@model_class.hash_key, @model.hash_key)
  builder.range_key = dump_attribute(@model_class.range_key, @model.range_value) if @model_class.range_key?

  if @model_class.attributes[:lock_version]
    lock_version = if @model.changes[:lock_version].nil?
                     @model.lock_version
                   else
                     @model.changes[:lock_version][0]
                   end

    # skip concurrency control when lock_version is nil
    if lock_version
      builder.add_expression_attribute_name('#_lock_version', 'lock_version')
      builder.add_expression_attribute_value(':lock_version_value', lock_version)
      builder.condition_expression = '#_lock_version = :lock_version_value'
    end
  end

  [builder.request]
end

#observable_by_user_result ⇒ Object 



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# File 'lib/dynamoid/transactions/mutation/delete_with_instance.rb', line 39

def observable_by_user_result
  @model
end

#on_commit ⇒ Object 



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# File 'lib/dynamoid/transactions/mutation/delete_with_instance.rb', line 22

def on_commit
  @model.destroyed = true
  @model.run_callbacks(:commit)
end

#on_registration ⇒ Object 



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# File 'lib/dynamoid/transactions/mutation/delete_with_instance.rb', line 18

def on_registration
  validate_model!
end

#on_rollback ⇒ Object 



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# File 'lib/dynamoid/transactions/mutation/delete_with_instance.rb', line 27

def on_rollback
  @model.run_callbacks(:rollback)
end

#skipped? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dynamoid/transactions/mutation/delete_with_instance.rb', line 35

def skipped?
  false
end